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-rw-r--r--pkgs/development/python-modules/Cython/default.nix1
-rw-r--r--pkgs/development/python-modules/GeoIP/default.nix3
-rw-r--r--pkgs/development/python-modules/JPype1/default.nix2
-rw-r--r--pkgs/development/python-modules/PyLD/default.nix2
-rw-r--r--pkgs/development/python-modules/Theano/default.nix1
-rw-r--r--pkgs/development/python-modules/acme/default.nix2
-rw-r--r--pkgs/development/python-modules/aiohttp-jinja2/default.nix2
-rw-r--r--pkgs/development/python-modules/aiohttp/cors.nix2
-rw-r--r--pkgs/development/python-modules/aiohue/default.nix2
-rw-r--r--pkgs/development/python-modules/anyjson/default.nix2
-rw-r--r--pkgs/development/python-modules/application/default.nix2
-rw-r--r--pkgs/development/python-modules/area53/default.nix2
-rw-r--r--pkgs/development/python-modules/argcomplete/default.nix2
-rw-r--r--pkgs/development/python-modules/argon2_cffi/default.nix3
-rw-r--r--pkgs/development/python-modules/asana/default.nix2
-rw-r--r--pkgs/development/python-modules/async_timeout/default.nix1
-rw-r--r--pkgs/development/python-modules/asyncio/default.nix2
-rw-r--r--pkgs/development/python-modules/asynctest/default.nix2
-rw-r--r--pkgs/development/python-modules/autograd/default.nix2
-rw-r--r--pkgs/development/python-modules/behave/default.nix2
-rw-r--r--pkgs/development/python-modules/bootstrapped-pip/default.nix2
-rw-r--r--pkgs/development/python-modules/bottleneck/default.nix3
-rw-r--r--pkgs/development/python-modules/browsermob-proxy/default.nix1
-rw-r--r--pkgs/development/python-modules/bz2file/default.nix1
-rw-r--r--pkgs/development/python-modules/cachetools/default.nix2
-rw-r--r--pkgs/development/python-modules/can/default.nix1
-rw-r--r--pkgs/development/python-modules/canmatrix/default.nix1
-rw-r--r--pkgs/development/python-modules/canopen/default.nix2
-rw-r--r--pkgs/development/python-modules/cdecimal/default.nix2
-rw-r--r--pkgs/development/python-modules/cffi/default.nix2
-rw-r--r--pkgs/development/python-modules/cftime/default.nix3
-rw-r--r--pkgs/development/python-modules/chainer/default.nix2
-rw-r--r--pkgs/development/python-modules/characteristic/default.nix3
-rw-r--r--pkgs/development/python-modules/circus/default.nix2
-rw-r--r--pkgs/development/python-modules/cmd2/default.nix4
-rw-r--r--pkgs/development/python-modules/cmd2/old.nix2
-rw-r--r--pkgs/development/python-modules/coinmarketcap/default.nix2
-rw-r--r--pkgs/development/python-modules/colorlover/default.nix2
-rw-r--r--pkgs/development/python-modules/configargparse/default.nix2
-rw-r--r--pkgs/development/python-modules/configparser/default.nix2
-rw-r--r--pkgs/development/python-modules/construct/default.nix2
-rw-r--r--pkgs/development/python-modules/coverage/default.nix1
-rw-r--r--pkgs/development/python-modules/cram/default.nix2
-rw-r--r--pkgs/development/python-modules/credstash/default.nix2
-rw-r--r--pkgs/development/python-modules/cryptography_vectors/default.nix1
-rw-r--r--pkgs/development/python-modules/cupy/default.nix2
-rw-r--r--pkgs/development/python-modules/cx_freeze/default.nix2
-rw-r--r--pkgs/development/python-modules/datadog/default.nix2
-rw-r--r--pkgs/development/python-modules/dateparser/default.nix2
-rw-r--r--pkgs/development/python-modules/debian/default.nix2
-rw-r--r--pkgs/development/python-modules/defusedxml/default.nix2
-rw-r--r--pkgs/development/python-modules/django_tagging/default.nix2
-rw-r--r--pkgs/development/python-modules/dkimpy/default.nix2
-rw-r--r--pkgs/development/python-modules/dugong/default.nix2
-rw-r--r--pkgs/development/python-modules/ecpy/default.nix2
-rw-r--r--pkgs/development/python-modules/email-validator/default.nix2
-rw-r--r--pkgs/development/python-modules/faulthandler/default.nix2
-rw-r--r--pkgs/development/python-modules/feedgen/default.nix2
-rw-r--r--pkgs/development/python-modules/flake8-future-import/default.nix3
-rw-r--r--pkgs/development/python-modules/flask-migrate/default.nix3
-rw-r--r--pkgs/development/python-modules/flit/default.nix1
-rw-r--r--pkgs/development/python-modules/fpdf/default.nix2
-rw-r--r--pkgs/development/python-modules/ftfy/default.nix2
-rw-r--r--pkgs/development/python-modules/gensim/default.nix3
-rw-r--r--pkgs/development/python-modules/graph-tool/2.x.x.nix2
-rw-r--r--pkgs/development/python-modules/h5py/default.nix2
-rw-r--r--pkgs/development/python-modules/hupper/default.nix2
-rw-r--r--pkgs/development/python-modules/hypchat/default.nix2
-rw-r--r--pkgs/development/python-modules/hypothesis/default.nix4
-rw-r--r--pkgs/development/python-modules/image-match/default.nix2
-rw-r--r--pkgs/development/python-modules/iowait/default.nix2
-rw-r--r--pkgs/development/python-modules/ipython/5.nix2
-rw-r--r--pkgs/development/python-modules/joblib/default.nix3
-rw-r--r--pkgs/development/python-modules/jsmin/default.nix2
-rw-r--r--pkgs/development/python-modules/jupyter_core/default.nix1
-rw-r--r--pkgs/development/python-modules/jupyterhub/default.nix2
-rw-r--r--pkgs/development/python-modules/kaitaistruct/default.nix2
-rw-r--r--pkgs/development/python-modules/keras/default.nix2
-rw-r--r--pkgs/development/python-modules/ldap/default.nix2
-rw-r--r--pkgs/development/python-modules/ldappool/default.nix2
-rw-r--r--pkgs/development/python-modules/libarcus/default.nix4
-rw-r--r--pkgs/development/python-modules/libgpuarray/default.nix1
-rw-r--r--pkgs/development/python-modules/libversion/default.nix2
-rw-r--r--pkgs/development/python-modules/libvirt/default.nix2
-rw-r--r--pkgs/development/python-modules/linode-api/default.nix1
-rw-r--r--pkgs/development/python-modules/lmtpd/default.nix2
-rw-r--r--pkgs/development/python-modules/marionette-harness/default.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/manifestparser.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/marionette_driver.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/mozcrash.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/mozdevice.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/mozfile.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/mozhttpd.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/mozlog.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/moznetwork.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/mozprocess.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/mozprofile.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/mozrunner.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/moztest.nix1
-rw-r--r--pkgs/development/python-modules/marionette-harness/mozversion.nix1
-rw-r--r--pkgs/development/python-modules/moto/default.nix2
-rw-r--r--pkgs/development/python-modules/mrbob/default.nix2
-rw-r--r--pkgs/development/python-modules/murmurhash/default.nix1
-rw-r--r--pkgs/development/python-modules/nbconvert/default.nix1
-rw-r--r--pkgs/development/python-modules/ncclient/default.nix1
-rw-r--r--pkgs/development/python-modules/netdisco/default.nix2
-rw-r--r--pkgs/development/python-modules/nltk/default.nix2
-rw-r--r--pkgs/development/python-modules/numpy/default.nix2
-rw-r--r--pkgs/development/python-modules/ovh/default.nix3
-rw-r--r--pkgs/development/python-modules/pandas/0.17.1.nix2
-rw-r--r--pkgs/development/python-modules/pandas/default.nix1
-rw-r--r--pkgs/development/python-modules/parse-type/default.nix2
-rw-r--r--pkgs/development/python-modules/parse/default.nix2
-rw-r--r--pkgs/development/python-modules/passlib/default.nix3
-rw-r--r--pkgs/development/python-modules/pelican/default.nix2
-rw-r--r--pkgs/development/python-modules/persistent/default.nix1
-rw-r--r--pkgs/development/python-modules/plaster-pastedeploy/default.nix2
-rw-r--r--pkgs/development/python-modules/plaster/default.nix2
-rw-r--r--pkgs/development/python-modules/pluggy/default.nix1
-rw-r--r--pkgs/development/python-modules/plumbum/default.nix3
-rw-r--r--pkgs/development/python-modules/poppler-qt5/default.nix2
-rw-r--r--pkgs/development/python-modules/powerline/default.nix3
-rw-r--r--pkgs/development/python-modules/progressbar2/default.nix1
-rw-r--r--pkgs/development/python-modules/prometheus_client/default.nix2
-rw-r--r--pkgs/development/python-modules/psutil/default.nix1
-rw-r--r--pkgs/development/python-modules/pyGithub/default.nix1
-rw-r--r--pkgs/development/python-modules/pyaml/default.nix1
-rw-r--r--pkgs/development/python-modules/pycaption/default.nix2
-rw-r--r--pkgs/development/python-modules/pycollada/default.nix2
-rw-r--r--pkgs/development/python-modules/pycrypto/default.nix2
-rw-r--r--pkgs/development/python-modules/pycryptodome/default.nix2
-rw-r--r--pkgs/development/python-modules/pygame/default.nix2
-rw-r--r--pkgs/development/python-modules/pygame_sdl2/default.nix2
-rw-r--r--pkgs/development/python-modules/pygccxml/default.nix2
-rw-r--r--pkgs/development/python-modules/pygobject/3.nix2
-rw-r--r--pkgs/development/python-modules/pymc3/default.nix1
-rw-r--r--pkgs/development/python-modules/pymvglive/default.nix2
-rw-r--r--pkgs/development/python-modules/pynacl/default.nix2
-rw-r--r--pkgs/development/python-modules/pyogg/default.nix2
-rw-r--r--pkgs/development/python-modules/pyowm/default.nix2
-rw-r--r--pkgs/development/python-modules/pyqt/5.x.nix2
-rw-r--r--pkgs/development/python-modules/pysc2/default.nix1
-rw-r--r--pkgs/development/python-modules/pysdl2/default.nix2
-rw-r--r--pkgs/development/python-modules/pyside/default.nix2
-rw-r--r--pkgs/development/python-modules/pytest-cram/default.nix2
-rw-r--r--pkgs/development/python-modules/pytest-flake8/default.nix2
-rw-r--r--pkgs/development/python-modules/pytest-mock/default.nix2
-rw-r--r--pkgs/development/python-modules/pytest-xdist/default.nix2
-rw-r--r--pkgs/development/python-modules/python-oauth2/default.nix1
-rw-r--r--pkgs/development/python-modules/pytorch/default.nix4
-rw-r--r--pkgs/development/python-modules/pywbem/default.nix2
-rw-r--r--pkgs/development/python-modules/pyxml/default.nix2
-rw-r--r--pkgs/development/python-modules/pyzmq/default.nix3
-rw-r--r--pkgs/development/python-modules/qiskit/default.nix2
-rw-r--r--pkgs/development/python-modules/rdflib/default.nix3
-rw-r--r--pkgs/development/python-modules/redis/default.nix2
-rw-r--r--pkgs/development/python-modules/reportlab/default.nix4
-rw-r--r--pkgs/development/python-modules/requests-mock/default.nix2
-rw-r--r--pkgs/development/python-modules/responses/default.nix2
-rw-r--r--pkgs/development/python-modules/rhpl/default.nix2
-rw-r--r--pkgs/development/python-modules/rubymarshal/default.nix2
-rw-r--r--pkgs/development/python-modules/salmon-mail/default.nix2
-rw-r--r--pkgs/development/python-modules/scikit-image/default.nix1
-rw-r--r--pkgs/development/python-modules/scikitlearn/default.nix2
-rw-r--r--pkgs/development/python-modules/scipy/default.nix2
-rw-r--r--pkgs/development/python-modules/serversyncstorage/default.nix3
-rw-r--r--pkgs/development/python-modules/smart_open/default.nix1
-rw-r--r--pkgs/development/python-modules/spacy/default.nix2
-rw-r--r--pkgs/development/python-modules/sqlalchemy/default.nix1
-rw-r--r--pkgs/development/python-modules/sseclient/default.nix2
-rw-r--r--pkgs/development/python-modules/syncserver/default.nix3
-rw-r--r--pkgs/development/python-modules/tempora/default.nix2
-rw-r--r--pkgs/development/python-modules/tensorflow/bin.nix2
-rw-r--r--pkgs/development/python-modules/testfixtures/default.nix2
-rw-r--r--pkgs/development/python-modules/textacy/default.nix1
-rw-r--r--pkgs/development/python-modules/thespian/default.nix2
-rw-r--r--pkgs/development/python-modules/thinc/default.nix2
-rw-r--r--pkgs/development/python-modules/tiros/default.nix2
-rw-r--r--pkgs/development/python-modules/todoist/default.nix2
-rw-r--r--pkgs/development/python-modules/tokenserver/default.nix3
-rw-r--r--pkgs/development/python-modules/tox/default.nix3
-rw-r--r--pkgs/development/python-modules/tqdm/default.nix2
-rw-r--r--pkgs/development/python-modules/typed-ast/default.nix2
-rw-r--r--pkgs/development/python-modules/tzlocal/default.nix2
-rw-r--r--pkgs/development/python-modules/ukpostcodeparser/default.nix2
-rw-r--r--pkgs/development/python-modules/uranium/default.nix2
-rw-r--r--pkgs/development/python-modules/vcrpy/default.nix1
-rw-r--r--pkgs/development/python-modules/warrant/default.nix2
-rw-r--r--pkgs/development/python-modules/wptserve/default.nix1
-rw-r--r--pkgs/development/python-modules/wsproto/default.nix2
-rw-r--r--pkgs/development/python-modules/xarray/default.nix1
-rw-r--r--pkgs/development/python-modules/zeep/default.nix1
-rw-r--r--pkgs/development/python-modules/zodb/default.nix1
-rw-r--r--pkgs/development/python-modules/zope_testrunner/default.nix1
194 files changed, 135 insertions, 232 deletions
diff --git a/pkgs/development/python-modules/Cython/default.nix b/pkgs/development/python-modules/Cython/default.nix
index 124e8b80ba0..fa07eee0d7e 100644
--- a/pkgs/development/python-modules/Cython/default.nix
+++ b/pkgs/development/python-modules/Cython/default.nix
@@ -2,7 +2,6 @@
 , stdenv
 , buildPythonPackage
 , fetchPypi
-, isPy3k
 , python
 , glibcLocales
 , pkgconfig
diff --git a/pkgs/development/python-modules/GeoIP/default.nix b/pkgs/development/python-modules/GeoIP/default.nix
index 4f0a7d4aebc..550fa1da3ed 100644
--- a/pkgs/development/python-modules/GeoIP/default.nix
+++ b/pkgs/development/python-modules/GeoIP/default.nix
@@ -1,5 +1,4 @@
-{lib, buildPythonPackage, fetchPypi, isPy3k, incremental, ipaddress, twisted
-, automat, zope_interface, idna, pyopenssl, service-identity, pytest, mock, lsof
+{lib, buildPythonPackage, fetchPypi
 , geoip, nose}:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/JPype1/default.nix b/pkgs/development/python-modules/JPype1/default.nix
index 13bddd3ffb8..879cdb9bd09 100644
--- a/pkgs/development/python-modules/JPype1/default.nix
+++ b/pkgs/development/python-modules/JPype1/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, isPy3k }:
+{ buildPythonPackage, fetchPypi, isPy3k }:
 
 buildPythonPackage rec {
   pname = "JPype1";
diff --git a/pkgs/development/python-modules/PyLD/default.nix b/pkgs/development/python-modules/PyLD/default.nix
index 29a792000e9..48878995bb4 100644
--- a/pkgs/development/python-modules/PyLD/default.nix
+++ b/pkgs/development/python-modules/PyLD/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, buildPythonPackage, fetchFromGitHub, python, gnugrep }:
+{ stdenv, buildPythonPackage, fetchFromGitHub, python, gnugrep }:
 
 let
 
diff --git a/pkgs/development/python-modules/Theano/default.nix b/pkgs/development/python-modules/Theano/default.nix
index 30c820ec6c1..e2b31cdda79 100644
--- a/pkgs/development/python-modules/Theano/default.nix
+++ b/pkgs/development/python-modules/Theano/default.nix
@@ -9,7 +9,6 @@
 , isPy3k
 , nose
 , numpy
-, pydot_ng
 , scipy
 , six
 , libgpuarray
diff --git a/pkgs/development/python-modules/acme/default.nix b/pkgs/development/python-modules/acme/default.nix
index cd81a7facc2..820ee2a95d8 100644
--- a/pkgs/development/python-modules/acme/default.nix
+++ b/pkgs/development/python-modules/acme/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi
+{ buildPythonPackage
 , certbot
 , nose
 , cryptography
diff --git a/pkgs/development/python-modules/aiohttp-jinja2/default.nix b/pkgs/development/python-modules/aiohttp-jinja2/default.nix
index f0756e1572e..9f307f24dfa 100644
--- a/pkgs/development/python-modules/aiohttp-jinja2/default.nix
+++ b/pkgs/development/python-modules/aiohttp-jinja2/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildPythonPackage, fetchPypi, aiohttp, jinja2, pytest, pytest-aiohttp }:
+{ lib, buildPythonPackage, fetchPypi, aiohttp, jinja2, pytest, pytest-aiohttp }:
 
 buildPythonPackage rec {
   pname = "aiohttp-jinja2";
diff --git a/pkgs/development/python-modules/aiohttp/cors.nix b/pkgs/development/python-modules/aiohttp/cors.nix
index 3065bb17c05..00198cd27cf 100644
--- a/pkgs/development/python-modules/aiohttp/cors.nix
+++ b/pkgs/development/python-modules/aiohttp/cors.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildPythonPackage, fetchPypi, pythonOlder
+{ lib, buildPythonPackage, fetchPypi, pythonOlder
 , typing, aiohttp
 }:
 
diff --git a/pkgs/development/python-modules/aiohue/default.nix b/pkgs/development/python-modules/aiohue/default.nix
index 2ad260f5d40..1492a15aadf 100644
--- a/pkgs/development/python-modules/aiohue/default.nix
+++ b/pkgs/development/python-modules/aiohue/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildPythonPackage, fetchPypi, aiohttp }:
+{ lib, buildPythonPackage, fetchPypi, aiohttp }:
 
 buildPythonPackage rec {
   pname = "aiohue";
diff --git a/pkgs/development/python-modules/anyjson/default.nix b/pkgs/development/python-modules/anyjson/default.nix
index ba32cf7ea69..6db4bbdc314 100644
--- a/pkgs/development/python-modules/anyjson/default.nix
+++ b/pkgs/development/python-modules/anyjson/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, isPy3k, nose }:
+{ buildPythonPackage, fetchPypi, isPy3k, nose }:
 
 buildPythonPackage rec {
   pname = "anyjson";
diff --git a/pkgs/development/python-modules/application/default.nix b/pkgs/development/python-modules/application/default.nix
index 32314b81edc..584eb3ae2c5 100644
--- a/pkgs/development/python-modules/application/default.nix
+++ b/pkgs/development/python-modules/application/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchdarcs, zope_interface, isPy3k }:
+{ buildPythonPackage, fetchdarcs, zope_interface, isPy3k }:
 
 buildPythonPackage rec {
   pname = "python-application";
diff --git a/pkgs/development/python-modules/area53/default.nix b/pkgs/development/python-modules/area53/default.nix
index 808ddc57096..20013b8a1ed 100644
--- a/pkgs/development/python-modules/area53/default.nix
+++ b/pkgs/development/python-modules/area53/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi
+{ buildPythonPackage, fetchPypi
 , boto }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/argcomplete/default.nix b/pkgs/development/python-modules/argcomplete/default.nix
index 28b88d3b46a..37d97f42aa1 100644
--- a/pkgs/development/python-modules/argcomplete/default.nix
+++ b/pkgs/development/python-modules/argcomplete/default.nix
@@ -1,5 +1,5 @@
 { buildPythonPackage, fetchPypi, lib,
-  coverage, dicttoxml, flake8, pexpect, prettytable, requests_toolbelt
+  dicttoxml, pexpect, prettytable, requests_toolbelt
 }:
 buildPythonPackage rec {
   pname = "argcomplete";
diff --git a/pkgs/development/python-modules/argon2_cffi/default.nix b/pkgs/development/python-modules/argon2_cffi/default.nix
index f46efd9f496..ce371076256 100644
--- a/pkgs/development/python-modules/argon2_cffi/default.nix
+++ b/pkgs/development/python-modules/argon2_cffi/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, cffi
+{ cffi
 , six
 , hypothesis
 , pytest
diff --git a/pkgs/development/python-modules/asana/default.nix b/pkgs/development/python-modules/asana/default.nix
index fd89457ed31..2fbe4932bed 100644
--- a/pkgs/development/python-modules/asana/default.nix
+++ b/pkgs/development/python-modules/asana/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, pytest, requests, requests_oauthlib, six
+{ buildPythonPackage, pytest, requests, requests_oauthlib, six
 , fetchFromGitHub, responses, stdenv
 }:
 
diff --git a/pkgs/development/python-modules/async_timeout/default.nix b/pkgs/development/python-modules/async_timeout/default.nix
index bc8e375271d..ee15be95418 100644
--- a/pkgs/development/python-modules/async_timeout/default.nix
+++ b/pkgs/development/python-modules/async_timeout/default.nix
@@ -1,7 +1,6 @@
 { lib
 , fetchPypi
 , buildPythonPackage
-, pytestrunner
 , pythonOlder
 }:
 
diff --git a/pkgs/development/python-modules/asyncio/default.nix b/pkgs/development/python-modules/asyncio/default.nix
index c3ed7bed742..489a31b3242 100644
--- a/pkgs/development/python-modules/asyncio/default.nix
+++ b/pkgs/development/python-modules/asyncio/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, isPy33, pythonOlder }:
+{ stdenv, buildPythonPackage, fetchPypi, pythonOlder }:
 
 buildPythonPackage rec {
   pname = "asyncio";
diff --git a/pkgs/development/python-modules/asynctest/default.nix b/pkgs/development/python-modules/asynctest/default.nix
index 0004badd6f4..187e0924cca 100644
--- a/pkgs/development/python-modules/asynctest/default.nix
+++ b/pkgs/development/python-modules/asynctest/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, fetchFromGitHub, pythonOlder, python }:
+{ lib, buildPythonPackage, fetchPypi, pythonOlder, python }:
 
 buildPythonPackage rec {
   pname = "asynctest";
diff --git a/pkgs/development/python-modules/autograd/default.nix b/pkgs/development/python-modules/autograd/default.nix
index 1c3c1fdefbe..bf7c35fa698 100644
--- a/pkgs/development/python-modules/autograd/default.nix
+++ b/pkgs/development/python-modules/autograd/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, numpy, future, nose }:
+{ stdenv, buildPythonPackage, fetchPypi, numpy, future }:
 
 buildPythonPackage rec {
   pname = "autograd";
diff --git a/pkgs/development/python-modules/behave/default.nix b/pkgs/development/python-modules/behave/default.nix
index a4a7b63b8a3..6fc3f16b3ad 100644
--- a/pkgs/development/python-modules/behave/default.nix
+++ b/pkgs/development/python-modules/behave/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchPypi
-, buildPythonApplication, isPy27, python, pythonOlder
+, buildPythonApplication, python, pythonOlder
 , mock, nose, pathpy, pyhamcrest, pytest
 , glibcLocales, parse, parse-type, six
 , traceback2
diff --git a/pkgs/development/python-modules/bootstrapped-pip/default.nix b/pkgs/development/python-modules/bootstrapped-pip/default.nix
index 240dd5513e8..2a9cb2a2cfd 100644
--- a/pkgs/development/python-modules/bootstrapped-pip/default.nix
+++ b/pkgs/development/python-modules/bootstrapped-pip/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, python, fetchPypi, fetchurl, makeWrapper, unzip }:
+{ stdenv, python, fetchPypi, makeWrapper, unzip }:
 
 let
   wheel_source = fetchPypi {
diff --git a/pkgs/development/python-modules/bottleneck/default.nix b/pkgs/development/python-modules/bottleneck/default.nix
index 791b05e81ca..c9ca8f7ec04 100644
--- a/pkgs/development/python-modules/bottleneck/default.nix
+++ b/pkgs/development/python-modules/bottleneck/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, buildPythonPackage
+{ buildPythonPackage
 , fetchPypi
 , nose
 , numpy
diff --git a/pkgs/development/python-modules/browsermob-proxy/default.nix b/pkgs/development/python-modules/browsermob-proxy/default.nix
index 5a9bae58bd6..b5da73a32d2 100644
--- a/pkgs/development/python-modules/browsermob-proxy/default.nix
+++ b/pkgs/development/python-modules/browsermob-proxy/default.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , requests
diff --git a/pkgs/development/python-modules/bz2file/default.nix b/pkgs/development/python-modules/bz2file/default.nix
index 3bc9882585f..8efb1c083f2 100644
--- a/pkgs/development/python-modules/bz2file/default.nix
+++ b/pkgs/development/python-modules/bz2file/default.nix
@@ -1,6 +1,5 @@
 { lib
 , buildPythonPackage
-, isPy3k
 , fetchPypi
 }:
 
diff --git a/pkgs/development/python-modules/cachetools/default.nix b/pkgs/development/python-modules/cachetools/default.nix
index de15ffaabc6..d4b9195c555 100644
--- a/pkgs/development/python-modules/cachetools/default.nix
+++ b/pkgs/development/python-modules/cachetools/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, isPyPy }:
+{ stdenv, buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "cachetools";
diff --git a/pkgs/development/python-modules/can/default.nix b/pkgs/development/python-modules/can/default.nix
index 395122b4da9..f85f80ea239 100644
--- a/pkgs/development/python-modules/can/default.nix
+++ b/pkgs/development/python-modules/can/default.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , pyserial
diff --git a/pkgs/development/python-modules/canmatrix/default.nix b/pkgs/development/python-modules/canmatrix/default.nix
index 99ac6c3ec45..3e07188986d 100644
--- a/pkgs/development/python-modules/canmatrix/default.nix
+++ b/pkgs/development/python-modules/canmatrix/default.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchFromGitHub
 , python
diff --git a/pkgs/development/python-modules/canopen/default.nix b/pkgs/development/python-modules/canopen/default.nix
index 08ae54e0b73..1afe2341633 100644
--- a/pkgs/development/python-modules/canopen/default.nix
+++ b/pkgs/development/python-modules/canopen/default.nix
@@ -1,7 +1,5 @@
 { lib
-, stdenv
 , buildPythonPackage
-, fetchPypi
 , fetchFromGitHub
 , nose
 , can
diff --git a/pkgs/development/python-modules/cdecimal/default.nix b/pkgs/development/python-modules/cdecimal/default.nix
index 2c0b0e623ca..0c636e12088 100644
--- a/pkgs/development/python-modules/cdecimal/default.nix
+++ b/pkgs/development/python-modules/cdecimal/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, wget, buildPythonPackage, isPy3k }:
+{ stdenv, fetchurl, buildPythonPackage, isPy3k }:
 
 with stdenv.lib;
 
diff --git a/pkgs/development/python-modules/cffi/default.nix b/pkgs/development/python-modules/cffi/default.nix
index 72476942276..3f1456f6e94 100644
--- a/pkgs/development/python-modules/cffi/default.nix
+++ b/pkgs/development/python-modules/cffi/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, isPy27, isPyPy, fetchPypi, libffi, pycparser, pytest }:
+{ stdenv, buildPythonPackage, isPyPy, fetchPypi, libffi, pycparser, pytest }:
 
 if isPyPy then null else buildPythonPackage rec {
   pname = "cffi";
diff --git a/pkgs/development/python-modules/cftime/default.nix b/pkgs/development/python-modules/cftime/default.nix
index 0e355723604..425a53987ca 100644
--- a/pkgs/development/python-modules/cftime/default.nix
+++ b/pkgs/development/python-modules/cftime/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, buildPythonPackage
+{ buildPythonPackage
 , fetchPypi
 , pytest
 , coveralls
diff --git a/pkgs/development/python-modules/chainer/default.nix b/pkgs/development/python-modules/chainer/default.nix
index b07a205ba21..cc75649119b 100644
--- a/pkgs/development/python-modules/chainer/default.nix
+++ b/pkgs/development/python-modules/chainer/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, python
+{ stdenv, lib
 , buildPythonPackage, fetchPypi, isPy3k
 , filelock, protobuf, numpy, pytest, mock
 , cupy, cudaSupport ? false
diff --git a/pkgs/development/python-modules/characteristic/default.nix b/pkgs/development/python-modules/characteristic/default.nix
index f004e6d541c..1c42b1283ee 100644
--- a/pkgs/development/python-modules/characteristic/default.nix
+++ b/pkgs/development/python-modules/characteristic/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, buildPythonPackage
+{ buildPythonPackage
 , fetchPypi
 , pytest
 }:
diff --git a/pkgs/development/python-modules/circus/default.nix b/pkgs/development/python-modules/circus/default.nix
index 7e6cc206cdc..0a82238b703 100644
--- a/pkgs/development/python-modules/circus/default.nix
+++ b/pkgs/development/python-modules/circus/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi
+{ buildPythonPackage, fetchPypi
 , iowait, psutil, pyzmq, tornado, mock }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/cmd2/default.nix b/pkgs/development/python-modules/cmd2/default.nix
index e83fd4163e4..967941666c8 100644
--- a/pkgs/development/python-modules/cmd2/default.nix
+++ b/pkgs/development/python-modules/cmd2/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchPypi, buildPythonPackage, pythonOlder, isPy3k
 , pyperclip, six, pyparsing, vim, wcwidth, colorama
-, contextlib2 ? null, subprocess32 ? null
-, pytest, mock, which, fetchFromGitHub, glibcLocales
+, contextlib2 ? null
+, pytest, mock, which, glibcLocales
 }:
 buildPythonPackage rec {
   pname = "cmd2";
diff --git a/pkgs/development/python-modules/cmd2/old.nix b/pkgs/development/python-modules/cmd2/old.nix
index 5ffa51def0d..7778e73f92f 100644
--- a/pkgs/development/python-modules/cmd2/old.nix
+++ b/pkgs/development/python-modules/cmd2/old.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, buildPythonPackage, pythonOlder
+{ stdenv, buildPythonPackage, pythonOlder
 , pyperclip, six, pyparsing, vim
 , contextlib2 ? null, subprocess32 ? null
 , pytest, mock, which, fetchFromGitHub, glibcLocales
diff --git a/pkgs/development/python-modules/coinmarketcap/default.nix b/pkgs/development/python-modules/coinmarketcap/default.nix
index cfd6389ce5f..bcf32714796 100644
--- a/pkgs/development/python-modules/coinmarketcap/default.nix
+++ b/pkgs/development/python-modules/coinmarketcap/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildPythonPackage, fetchPypi, requests-cache }:
+{ lib, buildPythonPackage, fetchPypi, requests-cache }:
 
 buildPythonPackage rec {
   pname = "coinmarketcap";
diff --git a/pkgs/development/python-modules/colorlover/default.nix b/pkgs/development/python-modules/colorlover/default.nix
index 1ccb31d5120..14bae27592a 100644
--- a/pkgs/development/python-modules/colorlover/default.nix
+++ b/pkgs/development/python-modules/colorlover/default.nix
@@ -1,4 +1,4 @@
-{ buildPythonPackage, fetchPypi, python, stdenv, nose
+{ buildPythonPackage, fetchPypi, stdenv
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/configargparse/default.nix b/pkgs/development/python-modules/configargparse/default.nix
index 6a52076252e..62e63a8e5b3 100644
--- a/pkgs/development/python-modules/configargparse/default.nix
+++ b/pkgs/development/python-modules/configargparse/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPythonPackage, fetchPypi }:
+{ lib, buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "ConfigArgParse";
diff --git a/pkgs/development/python-modules/configparser/default.nix b/pkgs/development/python-modules/configparser/default.nix
index 8e770c504c3..7bef3e82935 100644
--- a/pkgs/development/python-modules/configparser/default.nix
+++ b/pkgs/development/python-modules/configparser/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, isPy3k }:
+{ stdenv, buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "configparser";
diff --git a/pkgs/development/python-modules/construct/default.nix b/pkgs/development/python-modules/construct/default.nix
index afba2e17bf6..680f6e02cd0 100644
--- a/pkgs/development/python-modules/construct/default.nix
+++ b/pkgs/development/python-modules/construct/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchFromGitHub, six, pytest, pythonOlder }:
+{ stdenv, buildPythonPackage, fetchFromGitHub, six, pytest }:
 
 buildPythonPackage rec {
   pname = "construct";
diff --git a/pkgs/development/python-modules/coverage/default.nix b/pkgs/development/python-modules/coverage/default.nix
index 4d2a168f79c..0aa38aed296 100644
--- a/pkgs/development/python-modules/coverage/default.nix
+++ b/pkgs/development/python-modules/coverage/default.nix
@@ -1,7 +1,6 @@
 { lib
 , buildPythonPackage
 , fetchPypi
-, isPy3k
 , mock
 }:
 
diff --git a/pkgs/development/python-modules/cram/default.nix b/pkgs/development/python-modules/cram/default.nix
index 232a4a19fd8..f27cfc44e57 100644
--- a/pkgs/development/python-modules/cram/default.nix
+++ b/pkgs/development/python-modules/cram/default.nix
@@ -1,4 +1,4 @@
-{stdenv, lib, buildPythonPackage, fetchPypi, bash, which, writeText}:
+{stdenv, lib, buildPythonPackage, fetchPypi, bash, which}:
 
 buildPythonPackage rec {
   version = "0.7";
diff --git a/pkgs/development/python-modules/credstash/default.nix b/pkgs/development/python-modules/credstash/default.nix
index e19850be8ce..db48326535d 100644
--- a/pkgs/development/python-modules/credstash/default.nix
+++ b/pkgs/development/python-modules/credstash/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, fetchpatch, cryptography, boto3, pyyaml, docutils, nose }:
+{ stdenv, buildPythonPackage, fetchPypi, cryptography, boto3, pyyaml, docutils, nose }:
 
 buildPythonPackage rec {
   pname = "credstash";
diff --git a/pkgs/development/python-modules/cryptography_vectors/default.nix b/pkgs/development/python-modules/cryptography_vectors/default.nix
index bcab5c43475..6285ac28fce 100644
--- a/pkgs/development/python-modules/cryptography_vectors/default.nix
+++ b/pkgs/development/python-modules/cryptography_vectors/default.nix
@@ -1,6 +1,5 @@
 { buildPythonPackage
 , fetchPypi
-, cryptography
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/cupy/default.nix b/pkgs/development/python-modules/cupy/default.nix
index 3a3aeb7b226..da742b31050 100644
--- a/pkgs/development/python-modules/cupy/default.nix
+++ b/pkgs/development/python-modules/cupy/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, python, buildPythonPackage
+{ stdenv, buildPythonPackage
 , fetchPypi, isPy3k, linuxPackages, gcc5
 , fastrlock, numpy, six, wheel, pytest, mock
 , cudatoolkit, cudnn, nccl
diff --git a/pkgs/development/python-modules/cx_freeze/default.nix b/pkgs/development/python-modules/cx_freeze/default.nix
index 69a5e8c11d4..67120bf0f3d 100644
--- a/pkgs/development/python-modules/cx_freeze/default.nix
+++ b/pkgs/development/python-modules/cx_freeze/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, isPyPy, isPy35, ncurses }:
+{ stdenv, buildPythonPackage, fetchPypi, ncurses }:
 
 buildPythonPackage rec {
   pname = "cx_Freeze";
diff --git a/pkgs/development/python-modules/datadog/default.nix b/pkgs/development/python-modules/datadog/default.nix
index d01029652a9..47c206fda5e 100644
--- a/pkgs/development/python-modules/datadog/default.nix
+++ b/pkgs/development/python-modules/datadog/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchFromGitHub, isPy3k
+{ lib, buildPythonPackage, fetchFromGitHub
 , decorator, requests, simplejson
 , nose, mock }:
 
diff --git a/pkgs/development/python-modules/dateparser/default.nix b/pkgs/development/python-modules/dateparser/default.nix
index fdc408e1c4c..f6af0855b9f 100644
--- a/pkgs/development/python-modules/dateparser/default.nix
+++ b/pkgs/development/python-modules/dateparser/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchPypi, buildPythonPackage, isPy3k
+{ lib, fetchPypi, buildPythonPackage
 , nose
 , parameterized
 , mock
diff --git a/pkgs/development/python-modules/debian/default.nix b/pkgs/development/python-modules/debian/default.nix
index 937b6df4229..e4cd21bce4a 100644
--- a/pkgs/development/python-modules/debian/default.nix
+++ b/pkgs/development/python-modules/debian/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi
+{ buildPythonPackage, fetchPypi
 , chardet, six}:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/defusedxml/default.nix b/pkgs/development/python-modules/defusedxml/default.nix
index 6426333ed26..32819536500 100644
--- a/pkgs/development/python-modules/defusedxml/default.nix
+++ b/pkgs/development/python-modules/defusedxml/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi }:
+{ buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "defusedxml";
diff --git a/pkgs/development/python-modules/django_tagging/default.nix b/pkgs/development/python-modules/django_tagging/default.nix
index 6b048db90e3..fa06117a644 100644
--- a/pkgs/development/python-modules/django_tagging/default.nix
+++ b/pkgs/development/python-modules/django_tagging/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, django }:
+{ buildPythonPackage, fetchPypi, django }:
 
 buildPythonPackage rec {
   pname = "django-tagging";
diff --git a/pkgs/development/python-modules/dkimpy/default.nix b/pkgs/development/python-modules/dkimpy/default.nix
index dabc3244592..7ce8877bbce 100644
--- a/pkgs/development/python-modules/dkimpy/default.nix
+++ b/pkgs/development/python-modules/dkimpy/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, openssl, makeWrapper, buildPythonPackage
+{ stdenv, fetchPypi, openssl, buildPythonPackage
 , pytest, dnspython, pynacl, authres, python }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/dugong/default.nix b/pkgs/development/python-modules/dugong/default.nix
index 27b1a3e6122..20f4bc7e0c3 100644
--- a/pkgs/development/python-modules/dugong/default.nix
+++ b/pkgs/development/python-modules/dugong/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, pythonOlder }:
+{ buildPythonPackage, fetchPypi, pythonOlder }:
 
 buildPythonPackage rec {
   pname = "dugong";
diff --git a/pkgs/development/python-modules/ecpy/default.nix b/pkgs/development/python-modules/ecpy/default.nix
index 334778c93aa..97f04828300 100644
--- a/pkgs/development/python-modules/ecpy/default.nix
+++ b/pkgs/development/python-modules/ecpy/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchPypi, buildPythonPackage, isPy3k, hidapi
-, pycrypto, pillow, protobuf, future, ecpy
+, pycrypto, pillow, protobuf, future
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/email-validator/default.nix b/pkgs/development/python-modules/email-validator/default.nix
index a0a619a39c8..99859ac1517 100644
--- a/pkgs/development/python-modules/email-validator/default.nix
+++ b/pkgs/development/python-modules/email-validator/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPythonPackage, fetchPypi, isPy3k, dnspython, idna, ipaddress }:
+{ lib, buildPythonPackage, fetchPypi, isPy3k, dnspython, idna, ipaddress }:
 
 buildPythonPackage rec {
   pname = "email_validator";
diff --git a/pkgs/development/python-modules/faulthandler/default.nix b/pkgs/development/python-modules/faulthandler/default.nix
index a05ac1ba679..c4d600ec994 100644
--- a/pkgs/development/python-modules/faulthandler/default.nix
+++ b/pkgs/development/python-modules/faulthandler/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, buildPythonPackage, fetchpatch }:
+{ stdenv, fetchPypi, buildPythonPackage }:
 
 buildPythonPackage rec {
   pname = "faulthandler";
diff --git a/pkgs/development/python-modules/feedgen/default.nix b/pkgs/development/python-modules/feedgen/default.nix
index c5ac67106a2..67ff86e8f72 100644
--- a/pkgs/development/python-modules/feedgen/default.nix
+++ b/pkgs/development/python-modules/feedgen/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, fetchurl, dateutil, lxml }:
+{ stdenv, buildPythonPackage, fetchPypi, dateutil, lxml }:
 
 buildPythonPackage rec {
   pname = "feedgen";
diff --git a/pkgs/development/python-modules/flake8-future-import/default.nix b/pkgs/development/python-modules/flake8-future-import/default.nix
index 2612cfde1f5..eaed804245f 100644
--- a/pkgs/development/python-modules/flake8-future-import/default.nix
+++ b/pkgs/development/python-modules/flake8-future-import/default.nix
@@ -1,5 +1,4 @@
-{ lib, fetchFromGitHub, buildPythonPackage, python, flake8, six,
-  fetchurl }:
+{ lib, fetchFromGitHub, buildPythonPackage, flake8, six }:
 
 buildPythonPackage rec {
   pname = "flake8-future-import";
diff --git a/pkgs/development/python-modules/flask-migrate/default.nix b/pkgs/development/python-modules/flask-migrate/default.nix
index f4fc3cf3fa2..89cbdf0fbf8 100644
--- a/pkgs/development/python-modules/flask-migrate/default.nix
+++ b/pkgs/development/python-modules/flask-migrate/default.nix
@@ -1,5 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, isPy3k, python, glibcLocales, flask, flask_sqlalchemy, flask_script, alembic
-}:
+{ stdenv, buildPythonPackage, fetchPypi, isPy3k, glibcLocales, flask, flask_sqlalchemy, flask_script, alembic }:
 
 with stdenv.lib;
 
diff --git a/pkgs/development/python-modules/flit/default.nix b/pkgs/development/python-modules/flit/default.nix
index 17b9d018c39..d9a0682a02e 100644
--- a/pkgs/development/python-modules/flit/default.nix
+++ b/pkgs/development/python-modules/flit/default.nix
@@ -1,7 +1,6 @@
 { lib
 , buildPythonPackage
 , fetchPypi
-, fetchurl
 , isPy3k
 , docutils
 , requests
diff --git a/pkgs/development/python-modules/fpdf/default.nix b/pkgs/development/python-modules/fpdf/default.nix
index c09d54ad555..a528244cb0f 100644
--- a/pkgs/development/python-modules/fpdf/default.nix
+++ b/pkgs/development/python-modules/fpdf/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, writeText, buildPythonPackage, fetchPypi }:
+{ lib, buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "fpdf";
diff --git a/pkgs/development/python-modules/ftfy/default.nix b/pkgs/development/python-modules/ftfy/default.nix
index ca1c9a09e4e..d2e806e43b9 100644
--- a/pkgs/development/python-modules/ftfy/default.nix
+++ b/pkgs/development/python-modules/ftfy/default.nix
@@ -4,8 +4,6 @@
 , html5lib
 , wcwidth
 , nose
-, python
-, isPy3k
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/gensim/default.nix b/pkgs/development/python-modules/gensim/default.nix
index 3faa6d914d2..1b3ab52c4c3 100644
--- a/pkgs/development/python-modules/gensim/default.nix
+++ b/pkgs/development/python-modules/gensim/default.nix
@@ -5,9 +5,6 @@
 , six
 , scipy
 , smart_open
-, scikitlearn
-, testfixtures
-, unittest2
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/graph-tool/2.x.x.nix b/pkgs/development/python-modules/graph-tool/2.x.x.nix
index 7f2c7a58229..aa8050de088 100644
--- a/pkgs/development/python-modules/graph-tool/2.x.x.nix
+++ b/pkgs/development/python-modules/graph-tool/2.x.x.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchurl, python, cairomm, sparsehash, pycairo, autoreconfHook,
-pkgconfig, boost, expat, scipy, numpy, cgal, gmp, mpfr, lndir,
+pkgconfig, boost, expat, scipy, cgal, gmp, mpfr,
 gobjectIntrospection, pygobject3, gtk3, matplotlib, ncurses,
 buildPythonPackage }:
 
diff --git a/pkgs/development/python-modules/h5py/default.nix b/pkgs/development/python-modules/h5py/default.nix
index 144e826b675..2b95b1473cb 100644
--- a/pkgs/development/python-modules/h5py/default.nix
+++ b/pkgs/development/python-modules/h5py/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, fetchpatch, isPy27, python, buildPythonPackage
+{ stdenv, fetchPypi, isPy27, python, buildPythonPackage
 , numpy, hdf5, cython, six, pkgconfig, unittest2
 , mpi4py ? null, openssh }:
 
diff --git a/pkgs/development/python-modules/hupper/default.nix b/pkgs/development/python-modules/hupper/default.nix
index bbd4760bdf8..5131e64a3c2 100644
--- a/pkgs/development/python-modules/hupper/default.nix
+++ b/pkgs/development/python-modules/hupper/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, python
+{ stdenv, buildPythonPackage, fetchPypi
 , pytest, pytestcov, watchdog, mock
 }:
 
diff --git a/pkgs/development/python-modules/hypchat/default.nix b/pkgs/development/python-modules/hypchat/default.nix
index b7254461183..8337fd2230b 100644
--- a/pkgs/development/python-modules/hypchat/default.nix
+++ b/pkgs/development/python-modules/hypchat/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi
+{ buildPythonPackage, fetchPypi
 , requests, six, dateutil }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/hypothesis/default.nix b/pkgs/development/python-modules/hypothesis/default.nix
index d5ee59ac2d9..88705962627 100644
--- a/pkgs/development/python-modules/hypothesis/default.nix
+++ b/pkgs/development/python-modules/hypothesis/default.nix
@@ -1,6 +1,6 @@
-{ lib, buildPythonPackage, fetchFromGitHub, python
+{ lib, buildPythonPackage, fetchFromGitHub
 , isPy3k, attrs, coverage, enum34
-, doCheck ? true, pytest, pytest_xdist, flake8, flaky, mock
+, doCheck ? true, pytest, pytest_xdist, flaky, mock
 }:
 buildPythonPackage rec {
   # http://hypothesis.readthedocs.org/en/latest/packaging.html
diff --git a/pkgs/development/python-modules/image-match/default.nix b/pkgs/development/python-modules/image-match/default.nix
index 25c3c901a4e..49d1062abc3 100644
--- a/pkgs/development/python-modules/image-match/default.nix
+++ b/pkgs/development/python-modules/image-match/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchFromGitHub, pytestrunner, dask, scikitimage, six }:
+{ stdenv, buildPythonPackage, fetchFromGitHub, pytestrunner, scikitimage }:
 
 buildPythonPackage {
   pname = "image-match";
diff --git a/pkgs/development/python-modules/iowait/default.nix b/pkgs/development/python-modules/iowait/default.nix
index ef2444c0d2f..c67d56b153e 100644
--- a/pkgs/development/python-modules/iowait/default.nix
+++ b/pkgs/development/python-modules/iowait/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi }:
+{ buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "iowait";
diff --git a/pkgs/development/python-modules/ipython/5.nix b/pkgs/development/python-modules/ipython/5.nix
index a91988bd97d..f2066fee2a4 100644
--- a/pkgs/development/python-modules/ipython/5.nix
+++ b/pkgs/development/python-modules/ipython/5.nix
@@ -2,7 +2,6 @@
 , stdenv
 , buildPythonPackage
 , fetchPypi
-, pythonOlder
 # Build dependencies
 , glibcLocales
 # Test dependencies
@@ -13,7 +12,6 @@
 , mock
 # Runtime dependencies
 , backports_shutil_get_terminal_size
-, jedi
 , decorator
 , pathlib2
 , pickleshare
diff --git a/pkgs/development/python-modules/joblib/default.nix b/pkgs/development/python-modules/joblib/default.nix
index 65d1f4f6822..17896a58469 100644
--- a/pkgs/development/python-modules/joblib/default.nix
+++ b/pkgs/development/python-modules/joblib/default.nix
@@ -1,11 +1,8 @@
 { lib
 , buildPythonPackage
 , fetchPypi
-, nose
 , sphinx
 , numpydoc
-, isPy3k
-, stdenv
 , pytest
 }:
 
diff --git a/pkgs/development/python-modules/jsmin/default.nix b/pkgs/development/python-modules/jsmin/default.nix
index 3a6d69cc829..f11fccb086b 100644
--- a/pkgs/development/python-modules/jsmin/default.nix
+++ b/pkgs/development/python-modules/jsmin/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPythonPackage, fetchPypi }:
+{ lib, buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "jsmin";
diff --git a/pkgs/development/python-modules/jupyter_core/default.nix b/pkgs/development/python-modules/jupyter_core/default.nix
index c934d24dab7..a6a955507a7 100644
--- a/pkgs/development/python-modules/jupyter_core/default.nix
+++ b/pkgs/development/python-modules/jupyter_core/default.nix
@@ -1,5 +1,4 @@
 { lib
-, python
 , buildPythonPackage
 , fetchPypi
 , ipython
diff --git a/pkgs/development/python-modules/jupyterhub/default.nix b/pkgs/development/python-modules/jupyterhub/default.nix
index dbd2e36b7b8..8598654e206 100644
--- a/pkgs/development/python-modules/jupyterhub/default.nix
+++ b/pkgs/development/python-modules/jupyterhub/default.nix
@@ -1,5 +1,4 @@
 { lib
-, python
 , buildPythonPackage
 , fetchPypi
 , fetchzip
@@ -13,7 +12,6 @@
 , traitlets
 , requests
 , pythonOlder
-, nodejs-8_x
 , nodePackages
 }:
 
diff --git a/pkgs/development/python-modules/kaitaistruct/default.nix b/pkgs/development/python-modules/kaitaistruct/default.nix
index 19169e88b12..a1e795421b0 100644
--- a/pkgs/development/python-modules/kaitaistruct/default.nix
+++ b/pkgs/development/python-modules/kaitaistruct/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, kaitaistruct, buildPythonPackage, fetchPypi }:
+{ stdenv, buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "kaitaistruct";
diff --git a/pkgs/development/python-modules/keras/default.nix b/pkgs/development/python-modules/keras/default.nix
index be59a112be7..3b221238f3a 100644
--- a/pkgs/development/python-modules/keras/default.nix
+++ b/pkgs/development/python-modules/keras/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPythonPackage, fetchPypi
+{ stdenv, buildPythonPackage, fetchPypi
 , pytest, pytestcov, pytestpep8, pytest_xdist
 , six, numpy, scipy, pyyaml, h5py
 }:
diff --git a/pkgs/development/python-modules/ldap/default.nix b/pkgs/development/python-modules/ldap/default.nix
index 95672600a30..17a6b158d3f 100644
--- a/pkgs/development/python-modules/ldap/default.nix
+++ b/pkgs/development/python-modules/ldap/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi
+{ buildPythonPackage, fetchPypi
 , pyasn1, pyasn1-modules, pytest
 , openldap, cyrus_sasl }:
 
diff --git a/pkgs/development/python-modules/ldappool/default.nix b/pkgs/development/python-modules/ldappool/default.nix
index 58ca72a3dc9..02d10b832ff 100644
--- a/pkgs/development/python-modules/ldappool/default.nix
+++ b/pkgs/development/python-modules/ldappool/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, isPy3k
+{ lib, buildPythonPackage, fetchPypi
 , pbr, ldap, fixtures, testresources, testtools }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/libarcus/default.nix b/pkgs/development/python-modules/libarcus/default.nix
index 2fc66e810d0..fc58c6ca6a1 100644
--- a/pkgs/development/python-modules/libarcus/default.nix
+++ b/pkgs/development/python-modules/libarcus/default.nix
@@ -1,5 +1,5 @@
-{ stdenv, lib, buildPythonPackage, fetchFromGitHub
-, python, cmake, sip, protobuf, pythonOlder }:
+{ stdenv, buildPythonPackage, fetchFromGitHub
+, cmake, sip, protobuf, pythonOlder }:
 
 buildPythonPackage rec {
   pname = "libarcus";
diff --git a/pkgs/development/python-modules/libgpuarray/default.nix b/pkgs/development/python-modules/libgpuarray/default.nix
index 14e83584678..ef01fde2daa 100644
--- a/pkgs/development/python-modules/libgpuarray/default.nix
+++ b/pkgs/development/python-modules/libgpuarray/default.nix
@@ -8,7 +8,6 @@
 , six
 , nose
 , Mako
-, python
 , cudaSupport ? false, cudatoolkit , nvidia_x11
 , openclSupport ? true, ocl-icd, clblas
 }:
diff --git a/pkgs/development/python-modules/libversion/default.nix b/pkgs/development/python-modules/libversion/default.nix
index cf0a1a865a1..75e55944e98 100644
--- a/pkgs/development/python-modules/libversion/default.nix
+++ b/pkgs/development/python-modules/libversion/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, python, pkgconfig, libversion, pythonOlder }:
+{ stdenv, buildPythonPackage, fetchPypi, pkgconfig, libversion, pythonOlder }:
 
 buildPythonPackage rec {
   pname = "libversion";
diff --git a/pkgs/development/python-modules/libvirt/default.nix b/pkgs/development/python-modules/libvirt/default.nix
index a99d4542ba5..26b42020fc3 100644
--- a/pkgs/development/python-modules/libvirt/default.nix
+++ b/pkgs/development/python-modules/libvirt/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchgit, python, pkgconfig, lxml, libvirt, nose }:
+{ stdenv, buildPythonPackage, fetchgit, pkgconfig, lxml, libvirt, nose }:
 
 buildPythonPackage rec {
   pname = "libvirt";
diff --git a/pkgs/development/python-modules/linode-api/default.nix b/pkgs/development/python-modules/linode-api/default.nix
index ad6b938c988..4689050ba6c 100644
--- a/pkgs/development/python-modules/linode-api/default.nix
+++ b/pkgs/development/python-modules/linode-api/default.nix
@@ -1,7 +1,6 @@
 { stdenv,
   buildPythonPackage,
   fetchFromGitHub,
-  isPy3k,
   pythonOlder,
   lib,
   requests,
diff --git a/pkgs/development/python-modules/lmtpd/default.nix b/pkgs/development/python-modules/lmtpd/default.nix
index c9b9b489613..bc91139728b 100644
--- a/pkgs/development/python-modules/lmtpd/default.nix
+++ b/pkgs/development/python-modules/lmtpd/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, fetchFromGitHub }:
+{ stdenv, buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "lmtpd";
diff --git a/pkgs/development/python-modules/marionette-harness/default.nix b/pkgs/development/python-modules/marionette-harness/default.nix
index 4a96ce8ad05..ff1a6e49b01 100644
--- a/pkgs/development/python-modules/marionette-harness/default.nix
+++ b/pkgs/development/python-modules/marionette-harness/default.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , isPy3k
diff --git a/pkgs/development/python-modules/marionette-harness/manifestparser.nix b/pkgs/development/python-modules/marionette-harness/manifestparser.nix
index 5d52b52ac7f..7316526aa28 100644
--- a/pkgs/development/python-modules/marionette-harness/manifestparser.nix
+++ b/pkgs/development/python-modules/marionette-harness/manifestparser.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , isPy3k
diff --git a/pkgs/development/python-modules/marionette-harness/marionette_driver.nix b/pkgs/development/python-modules/marionette-harness/marionette_driver.nix
index d27637874af..b6d761f077c 100644
--- a/pkgs/development/python-modules/marionette-harness/marionette_driver.nix
+++ b/pkgs/development/python-modules/marionette-harness/marionette_driver.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , isPy3k
diff --git a/pkgs/development/python-modules/marionette-harness/mozcrash.nix b/pkgs/development/python-modules/marionette-harness/mozcrash.nix
index ccd0eb6cc9f..3f7710acb3c 100644
--- a/pkgs/development/python-modules/marionette-harness/mozcrash.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozcrash.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , mozfile
diff --git a/pkgs/development/python-modules/marionette-harness/mozdevice.nix b/pkgs/development/python-modules/marionette-harness/mozdevice.nix
index 8569d9287ac..491069cd87f 100644
--- a/pkgs/development/python-modules/marionette-harness/mozdevice.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozdevice.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , moznetwork
diff --git a/pkgs/development/python-modules/marionette-harness/mozfile.nix b/pkgs/development/python-modules/marionette-harness/mozfile.nix
index 7bd14f2d10c..34350dd4821 100644
--- a/pkgs/development/python-modules/marionette-harness/mozfile.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozfile.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 }:
diff --git a/pkgs/development/python-modules/marionette-harness/mozhttpd.nix b/pkgs/development/python-modules/marionette-harness/mozhttpd.nix
index 1d1be733f99..6862967e420 100644
--- a/pkgs/development/python-modules/marionette-harness/mozhttpd.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozhttpd.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , moznetwork
diff --git a/pkgs/development/python-modules/marionette-harness/mozlog.nix b/pkgs/development/python-modules/marionette-harness/mozlog.nix
index dfe91309ea4..bc4b9e91465 100644
--- a/pkgs/development/python-modules/marionette-harness/mozlog.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozlog.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , isPy3k
diff --git a/pkgs/development/python-modules/marionette-harness/moznetwork.nix b/pkgs/development/python-modules/marionette-harness/moznetwork.nix
index a6561d3e07a..3901f7c310d 100644
--- a/pkgs/development/python-modules/marionette-harness/moznetwork.nix
+++ b/pkgs/development/python-modules/marionette-harness/moznetwork.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , mozlog
diff --git a/pkgs/development/python-modules/marionette-harness/mozprocess.nix b/pkgs/development/python-modules/marionette-harness/mozprocess.nix
index c1e53443260..e8130e8038f 100644
--- a/pkgs/development/python-modules/marionette-harness/mozprocess.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozprocess.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , mozinfo
diff --git a/pkgs/development/python-modules/marionette-harness/mozprofile.nix b/pkgs/development/python-modules/marionette-harness/mozprofile.nix
index c94acdd3ba5..3620248904c 100644
--- a/pkgs/development/python-modules/marionette-harness/mozprofile.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozprofile.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , mozlog
diff --git a/pkgs/development/python-modules/marionette-harness/mozrunner.nix b/pkgs/development/python-modules/marionette-harness/mozrunner.nix
index e9f6177cfa1..324c7c6c2d2 100644
--- a/pkgs/development/python-modules/marionette-harness/mozrunner.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozrunner.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , mozdevice
diff --git a/pkgs/development/python-modules/marionette-harness/moztest.nix b/pkgs/development/python-modules/marionette-harness/moztest.nix
index d1c799c95de..2ff50e1fa92 100644
--- a/pkgs/development/python-modules/marionette-harness/moztest.nix
+++ b/pkgs/development/python-modules/marionette-harness/moztest.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , mozinfo
diff --git a/pkgs/development/python-modules/marionette-harness/mozversion.nix b/pkgs/development/python-modules/marionette-harness/mozversion.nix
index c9eb12bd52b..dbe3cb4bc2d 100644
--- a/pkgs/development/python-modules/marionette-harness/mozversion.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozversion.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , mozlog
diff --git a/pkgs/development/python-modules/moto/default.nix b/pkgs/development/python-modules/moto/default.nix
index e4b2bdefad2..cfb70724210 100644
--- a/pkgs/development/python-modules/moto/default.nix
+++ b/pkgs/development/python-modules/moto/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, jinja2, werkzeug, flask
+{ buildPythonPackage, fetchPypi, jinja2, werkzeug, flask
 , requests, pytz, backports_tempfile, cookies, jsondiff, botocore, aws-xray-sdk, docker, responses
 , six, boto, httpretty, xmltodict, nose, sure, boto3, freezegun, dateutil, mock, pyaml }:
 
diff --git a/pkgs/development/python-modules/mrbob/default.nix b/pkgs/development/python-modules/mrbob/default.nix
index 3f974872b95..6dbfa1fae60 100644
--- a/pkgs/development/python-modules/mrbob/default.nix
+++ b/pkgs/development/python-modules/mrbob/default.nix
@@ -1,5 +1,5 @@
 { buildPythonPackage, stdenv, glibcLocales, mock, nose, isPy3k, argparse, jinja2, six
-, fetchPypi, lib
+, fetchPypi
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/murmurhash/default.nix b/pkgs/development/python-modules/murmurhash/default.nix
index f689bc2ff49..a3a9096a335 100644
--- a/pkgs/development/python-modules/murmurhash/default.nix
+++ b/pkgs/development/python-modules/murmurhash/default.nix
@@ -2,7 +2,6 @@
 , buildPythonPackage
 , fetchPypi
 , cython
-, python
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/nbconvert/default.nix b/pkgs/development/python-modules/nbconvert/default.nix
index dfa87c843ff..b167b7f427c 100644
--- a/pkgs/development/python-modules/nbconvert/default.nix
+++ b/pkgs/development/python-modules/nbconvert/default.nix
@@ -13,7 +13,6 @@
 , testpath
 , jupyter_core
 , nbformat
-, nbconvert
 , ipykernel
 , pandocfilters
 , tornado
diff --git a/pkgs/development/python-modules/ncclient/default.nix b/pkgs/development/python-modules/ncclient/default.nix
index 4cc5769d8d8..27fc7d11e75 100644
--- a/pkgs/development/python-modules/ncclient/default.nix
+++ b/pkgs/development/python-modules/ncclient/default.nix
@@ -5,7 +5,6 @@
 , lxml
 , libxml2
 , libxslt
-, pytest
 , nose
 , rednose
 }:
diff --git a/pkgs/development/python-modules/netdisco/default.nix b/pkgs/development/python-modules/netdisco/default.nix
index af7e4dde59e..e60233c3590 100644
--- a/pkgs/development/python-modules/netdisco/default.nix
+++ b/pkgs/development/python-modules/netdisco/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, isPy3k, fetchFromGitHub, fetchpatch, requests, zeroconf, netifaces, pytest }:
+{ stdenv, buildPythonPackage, isPy3k, fetchFromGitHub, requests, zeroconf, netifaces, pytest }:
 
 buildPythonPackage rec {
   pname = "netdisco";
diff --git a/pkgs/development/python-modules/nltk/default.nix b/pkgs/development/python-modules/nltk/default.nix
index 9645e54f7ec..56edc44bce7 100644
--- a/pkgs/development/python-modules/nltk/default.nix
+++ b/pkgs/development/python-modules/nltk/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, buildPythonPackage, isPy33, lib, six, pythonAtLeast, pythonOlder }:
+{ fetchurl, buildPythonPackage, lib, six, pythonAtLeast, pythonOlder }:
 
 buildPythonPackage rec {
   version = "3.2.5";
diff --git a/pkgs/development/python-modules/numpy/default.nix b/pkgs/development/python-modules/numpy/default.nix
index d6531eda2ef..d9e884dabbe 100644
--- a/pkgs/development/python-modules/numpy/default.nix
+++ b/pkgs/development/python-modules/numpy/default.nix
@@ -1,4 +1,4 @@
-{lib, fetchPypi, python, buildPythonPackage, isPy27, isPyPy, gfortran, nose, blas, hostPlatform }:
+{lib, fetchPypi, python, buildPythonPackage, isPyPy, gfortran, nose, blas, hostPlatform }:
 
 buildPythonPackage rec {
   pname = "numpy";
diff --git a/pkgs/development/python-modules/ovh/default.nix b/pkgs/development/python-modules/ovh/default.nix
index 3f37940ed8a..474609220cf 100644
--- a/pkgs/development/python-modules/ovh/default.nix
+++ b/pkgs/development/python-modules/ovh/default.nix
@@ -1,9 +1,6 @@
 { lib
 , buildPythonPackage
 , fetchPypi
-, requests
-, nose
-, mock
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/pandas/0.17.1.nix b/pkgs/development/python-modules/pandas/0.17.1.nix
index 2c0a2c44f6e..e4973d0d6e3 100644
--- a/pkgs/development/python-modules/pandas/0.17.1.nix
+++ b/pkgs/development/python-modules/pandas/0.17.1.nix
@@ -1,8 +1,6 @@
 { buildPythonPackage
 , fetchPypi
-, python
 , stdenv
-, fetchurl
 , pytest
 , glibcLocales
 , cython
diff --git a/pkgs/development/python-modules/pandas/default.nix b/pkgs/development/python-modules/pandas/default.nix
index 08fdddb7346..fc75e5803af 100644
--- a/pkgs/development/python-modules/pandas/default.nix
+++ b/pkgs/development/python-modules/pandas/default.nix
@@ -2,7 +2,6 @@
 , fetchPypi
 , python
 , stdenv
-, fetchurl
 , pytest
 , glibcLocales
 , cython
diff --git a/pkgs/development/python-modules/parse-type/default.nix b/pkgs/development/python-modules/parse-type/default.nix
index ac150af4b78..34573626bac 100644
--- a/pkgs/development/python-modules/parse-type/default.nix
+++ b/pkgs/development/python-modules/parse-type/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, fetchpatch
+{ stdenv, fetchPypi
 , buildPythonPackage, pythonOlder
 , pytest, pytestrunner
 , parse, six, enum34
diff --git a/pkgs/development/python-modules/parse/default.nix b/pkgs/development/python-modules/parse/default.nix
index 18cc23338bf..4092f5e1c4f 100644
--- a/pkgs/development/python-modules/parse/default.nix
+++ b/pkgs/development/python-modules/parse/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, fetchpatch
+{ stdenv, fetchPypi
 , buildPythonPackage, python
 }:
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/passlib/default.nix b/pkgs/development/python-modules/passlib/default.nix
index 165de7bd2ba..24539c7bbce 100644
--- a/pkgs/development/python-modules/passlib/default.nix
+++ b/pkgs/development/python-modules/passlib/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, buildPythonPackage
+{ buildPythonPackage
 , fetchPypi
 , nose
 , bcrypt
diff --git a/pkgs/development/python-modules/pelican/default.nix b/pkgs/development/python-modules/pelican/default.nix
index 2d1f707a8eb..1ee93c753d8 100644
--- a/pkgs/development/python-modules/pelican/default.nix
+++ b/pkgs/development/python-modules/pelican/default.nix
@@ -1,5 +1,5 @@
 { stdenv, buildPythonPackage, fetchFromGitHub
-, glibcLocales, pandoc, git
+, glibcLocales, git
 , mock, nose, markdown, lxml, typogrify
 , jinja2, pygments, docutils, pytz, unidecode, six, dateutil, feedgenerator
 , blinker, pillow, beautifulsoup4, markupsafe }:
diff --git a/pkgs/development/python-modules/persistent/default.nix b/pkgs/development/python-modules/persistent/default.nix
index b861797c4a8..4f2e7f3ca84 100644
--- a/pkgs/development/python-modules/persistent/default.nix
+++ b/pkgs/development/python-modules/persistent/default.nix
@@ -1,7 +1,6 @@
 { buildPythonPackage
 , fetchPypi
 , zope_interface
-, pkgs
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/plaster-pastedeploy/default.nix b/pkgs/development/python-modules/plaster-pastedeploy/default.nix
index 3f90e6b2da7..5675be32397 100644
--- a/pkgs/development/python-modules/plaster-pastedeploy/default.nix
+++ b/pkgs/development/python-modules/plaster-pastedeploy/default.nix
@@ -1,4 +1,4 @@
-{ buildPythonPackage, fetchPypi, python
+{ buildPythonPackage, fetchPypi
 , plaster, PasteDeploy
 , pytest, pytestcov
 }:
diff --git a/pkgs/development/python-modules/plaster/default.nix b/pkgs/development/python-modules/plaster/default.nix
index 8c3de8bd035..82aaebb1003 100644
--- a/pkgs/development/python-modules/plaster/default.nix
+++ b/pkgs/development/python-modules/plaster/default.nix
@@ -1,4 +1,4 @@
-{ buildPythonPackage, fetchPypi, python
+{ buildPythonPackage, fetchPypi
 , pytest, pytestcov
 }:
 
diff --git a/pkgs/development/python-modules/pluggy/default.nix b/pkgs/development/python-modules/pluggy/default.nix
index 0fbfa5108c1..2a6996c628e 100644
--- a/pkgs/development/python-modules/pluggy/default.nix
+++ b/pkgs/development/python-modules/pluggy/default.nix
@@ -1,7 +1,6 @@
 { buildPythonPackage
 , lib
 , fetchPypi
-, pytest
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/plumbum/default.nix b/pkgs/development/python-modules/plumbum/default.nix
index 5269ecd5d8b..2c6eb7e5fbf 100644
--- a/pkgs/development/python-modules/plumbum/default.nix
+++ b/pkgs/development/python-modules/plumbum/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, buildPythonPackage
+{ buildPythonPackage
 , fetchPypi
 , pytest
 }:
diff --git a/pkgs/development/python-modules/poppler-qt5/default.nix b/pkgs/development/python-modules/poppler-qt5/default.nix
index 0ae689034a3..2b00a007f90 100644
--- a/pkgs/development/python-modules/poppler-qt5/default.nix
+++ b/pkgs/development/python-modules/poppler-qt5/default.nix
@@ -1,5 +1,5 @@
 { buildPythonPackage, fetchPypi, stdenv, sip, qtbase, pyqt5, poppler, pkgconfig, fetchpatch
-, python, substituteAll
+, substituteAll
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/powerline/default.nix b/pkgs/development/python-modules/powerline/default.nix
index f51c6989c01..841e003bc89 100644
--- a/pkgs/development/python-modules/powerline/default.nix
+++ b/pkgs/development/python-modules/powerline/default.nix
@@ -1,9 +1,6 @@
 { lib
 , fetchurl
 , buildPythonPackage
-, git
-, mercurial
-, bazaar
 , psutil
 , pygit2
 }:
diff --git a/pkgs/development/python-modules/progressbar2/default.nix b/pkgs/development/python-modules/progressbar2/default.nix
index 212c06cc942..18fb14c3aa9 100644
--- a/pkgs/development/python-modules/progressbar2/default.nix
+++ b/pkgs/development/python-modules/progressbar2/default.nix
@@ -2,7 +2,6 @@
 , python
 , buildPythonPackage
 , fetchFromGitHub
-, isPy3k
 , pytest
 , python-utils
 , sphinx
diff --git a/pkgs/development/python-modules/prometheus_client/default.nix b/pkgs/development/python-modules/prometheus_client/default.nix
index eaf353af082..f6b2bfa939c 100644
--- a/pkgs/development/python-modules/prometheus_client/default.nix
+++ b/pkgs/development/python-modules/prometheus_client/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildPythonPackage, fetchPypi, pytest }:
+{ lib, buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "prometheus_client";
diff --git a/pkgs/development/python-modules/psutil/default.nix b/pkgs/development/python-modules/psutil/default.nix
index 7fbdfb7c33e..84fe2f69554 100644
--- a/pkgs/development/python-modules/psutil/default.nix
+++ b/pkgs/development/python-modules/psutil/default.nix
@@ -2,7 +2,6 @@
 , buildPythonPackage
 , fetchPypi
 , darwin
-, mock
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/pyGithub/default.nix b/pkgs/development/python-modules/pyGithub/default.nix
index 6adc1e7ec04..be409e348ea 100644
--- a/pkgs/development/python-modules/pyGithub/default.nix
+++ b/pkgs/development/python-modules/pyGithub/default.nix
@@ -1,5 +1,4 @@
 { stdenv, fetchFromGitHub
-, cacert
 , buildPythonPackage, python-jose, pyjwt }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/pyaml/default.nix b/pkgs/development/python-modules/pyaml/default.nix
index 5fd1be7c15c..fd1866d22f4 100644
--- a/pkgs/development/python-modules/pyaml/default.nix
+++ b/pkgs/development/python-modules/pyaml/default.nix
@@ -3,7 +3,6 @@
 , fetchPypi
 , pyyaml
 , unidecode
-, python
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/pycaption/default.nix b/pkgs/development/python-modules/pycaption/default.nix
index 845630e514f..d4ed6088409 100644
--- a/pkgs/development/python-modules/pycaption/default.nix
+++ b/pkgs/development/python-modules/pycaption/default.nix
@@ -1,5 +1,5 @@
 { lib, fetchpatch
-, buildPythonPackage, fetchPypi, isPy3k, pythonOlder
+, buildPythonPackage, fetchPypi, isPy3k
 , beautifulsoup4, lxml, cssutils, future, enum34, six
 }:
 
diff --git a/pkgs/development/python-modules/pycollada/default.nix b/pkgs/development/python-modules/pycollada/default.nix
index b074f9f4934..23ed4917cc5 100644
--- a/pkgs/development/python-modules/pycollada/default.nix
+++ b/pkgs/development/python-modules/pycollada/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, buildPythonPackage, numpy, isPy3k, dateutil }:
+{ stdenv, fetchPypi, buildPythonPackage, numpy, dateutil }:
 
 buildPythonPackage rec {
   pname = "pycollada";
diff --git a/pkgs/development/python-modules/pycrypto/default.nix b/pkgs/development/python-modules/pycrypto/default.nix
index af975e333f0..e7858888d36 100644
--- a/pkgs/development/python-modules/pycrypto/default.nix
+++ b/pkgs/development/python-modules/pycrypto/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, buildPythonPackage, pycryptodome }:
+{ buildPythonPackage, pycryptodome }:
 
 # This is a dummy package providing the drop-in replacement pycryptodome.
 # https://github.com/NixOS/nixpkgs/issues/21671
diff --git a/pkgs/development/python-modules/pycryptodome/default.nix b/pkgs/development/python-modules/pycryptodome/default.nix
index b4ef42cb22a..35041f8447b 100644
--- a/pkgs/development/python-modules/pycryptodome/default.nix
+++ b/pkgs/development/python-modules/pycryptodome/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, python, buildPythonPackage, gmp }:
+{ stdenv, fetchPypi, buildPythonPackage }:
 
 buildPythonPackage rec {
   version = "3.6.2";
diff --git a/pkgs/development/python-modules/pygame/default.nix b/pkgs/development/python-modules/pygame/default.nix
index 5a4a81f13ac..b6c9ae5e8ba 100644
--- a/pkgs/development/python-modules/pygame/default.nix
+++ b/pkgs/development/python-modules/pygame/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchurl, buildPythonPackage, python, smpeg, libX11
+{ stdenv, lib, fetchurl, buildPythonPackage, python, libX11
 , SDL, SDL_image, SDL_mixer, SDL_ttf, libpng, libjpeg, portmidi, freetype
 }:
 
diff --git a/pkgs/development/python-modules/pygame_sdl2/default.nix b/pkgs/development/python-modules/pygame_sdl2/default.nix
index 08c266da696..916bf7f692d 100644
--- a/pkgs/development/python-modules/pygame_sdl2/default.nix
+++ b/pkgs/development/python-modules/pygame_sdl2/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, pkgs, buildPythonPackage, fetchurl, isPy27, fetchpatch
+{ stdenv, buildPythonPackage, fetchurl, isPy27, fetchpatch
 , cython, SDL2, SDL2_image, SDL2_ttf, SDL2_mixer, libjpeg, libpng }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/pygccxml/default.nix b/pkgs/development/python-modules/pygccxml/default.nix
index 5271677dc1e..d4c46d6b835 100644
--- a/pkgs/development/python-modules/pygccxml/default.nix
+++ b/pkgs/development/python-modules/pygccxml/default.nix
@@ -1,5 +1,5 @@
 { stdenv, castxml, fetchFromGitHub, buildPythonPackage,
-llvmPackages, clang }:
+llvmPackages }:
 buildPythonPackage rec {
   pname = "pygccxml";
   version = "1.9.1";
diff --git a/pkgs/development/python-modules/pygobject/3.nix b/pkgs/development/python-modules/pygobject/3.nix
index 524fb4af61c..c6264f08de8 100644
--- a/pkgs/development/python-modules/pygobject/3.nix
+++ b/pkgs/development/python-modules/pygobject/3.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, buildPythonPackage, python, pkgconfig, glib, gobjectIntrospection, pycairo, cairo, which, ncurses}:
+{ stdenv, fetchurl, buildPythonPackage, pkgconfig, glib, gobjectIntrospection, pycairo, cairo, which, ncurses}:
 
 buildPythonPackage rec {
   major = "3.26";
diff --git a/pkgs/development/python-modules/pymc3/default.nix b/pkgs/development/python-modules/pymc3/default.nix
index a0dd6113b75..5af6ef99228 100644
--- a/pkgs/development/python-modules/pymc3/default.nix
+++ b/pkgs/development/python-modules/pymc3/default.nix
@@ -12,7 +12,6 @@
 , pytest
 , nose
 , parameterized
-, matplotlib
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/pymvglive/default.nix b/pkgs/development/python-modules/pymvglive/default.nix
index 1263c498a46..3b7011fa748 100644
--- a/pkgs/development/python-modules/pymvglive/default.nix
+++ b/pkgs/development/python-modules/pymvglive/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildPythonPackage, fetchPypi, requests }:
+{ lib, buildPythonPackage, fetchPypi, requests }:
 
 buildPythonPackage rec {
   pname = "PyMVGLive";
diff --git a/pkgs/development/python-modules/pynacl/default.nix b/pkgs/development/python-modules/pynacl/default.nix
index bceb2b50cc5..463cd8044e1 100644
--- a/pkgs/development/python-modules/pynacl/default.nix
+++ b/pkgs/development/python-modules/pynacl/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchFromGitHub, pytest, coverage, libsodium, cffi, six, hypothesis}:
+{ stdenv, buildPythonPackage, fetchFromGitHub, pytest, libsodium, cffi, six, hypothesis}:
 
 buildPythonPackage rec {
   pname = "pynacl";
diff --git a/pkgs/development/python-modules/pyogg/default.nix b/pkgs/development/python-modules/pyogg/default.nix
index 08fc8712795..09b7f386130 100644
--- a/pkgs/development/python-modules/pyogg/default.nix
+++ b/pkgs/development/python-modules/pyogg/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchPypi, buildPythonPackage, fetchurl, libvorbis, flac, libogg, libopus, opusfile }:
+{ stdenv, lib, fetchPypi, buildPythonPackage, libvorbis, flac, libogg, libopus, opusfile }:
 
 buildPythonPackage rec {
     pname = "PyOgg";
diff --git a/pkgs/development/python-modules/pyowm/default.nix b/pkgs/development/python-modules/pyowm/default.nix
index 8175ef2b172..55f96416efd 100644
--- a/pkgs/development/python-modules/pyowm/default.nix
+++ b/pkgs/development/python-modules/pyowm/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, buildPythonPackage, fetchPypi, requests }:
+{ lib, buildPythonPackage, fetchPypi, requests }:
 
 buildPythonPackage rec {
   pname = "pyowm";
diff --git a/pkgs/development/python-modules/pyqt/5.x.nix b/pkgs/development/python-modules/pyqt/5.x.nix
index ebad81f809b..6a3e3e66e2c 100644
--- a/pkgs/development/python-modules/pyqt/5.x.nix
+++ b/pkgs/development/python-modules/pyqt/5.x.nix
@@ -1,4 +1,4 @@
-{ lib, fetchurl, fetchpatch, pythonPackages, pkgconfig, makeWrapper
+{ lib, fetchurl, fetchpatch, pythonPackages, pkgconfig
 , qmake, lndir, qtbase, qtsvg, qtwebkit, qtwebengine, dbus
 , withWebSockets ? false, qtwebsockets
 , withConnectivity ? false, qtconnectivity
diff --git a/pkgs/development/python-modules/pysc2/default.nix b/pkgs/development/python-modules/pysc2/default.nix
index 89799988fa1..280981ab2c2 100644
--- a/pkgs/development/python-modules/pysc2/default.nix
+++ b/pkgs/development/python-modules/pysc2/default.nix
@@ -4,7 +4,6 @@
 , absl-py
 , enum34
 , future
-, futures
 , mock
 , mpyq
 , numpy
diff --git a/pkgs/development/python-modules/pysdl2/default.nix b/pkgs/development/python-modules/pysdl2/default.nix
index 6681b1b199a..1ffc546cfa1 100644
--- a/pkgs/development/python-modules/pysdl2/default.nix
+++ b/pkgs/development/python-modules/pysdl2/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchPypi, buildPythonPackage, fetchurl, SDL2, SDL2_ttf, SDL2_image, SDL2_gfx, SDL2_mixer, pyopengl }:
+{ stdenv, lib, fetchPypi, buildPythonPackage, SDL2, SDL2_ttf, SDL2_image, SDL2_gfx, SDL2_mixer }:
 
 buildPythonPackage rec {
   pname = "PySDL2";
diff --git a/pkgs/development/python-modules/pyside/default.nix b/pkgs/development/python-modules/pyside/default.nix
index 288b141d32e..ab46c726f6c 100644
--- a/pkgs/development/python-modules/pyside/default.nix
+++ b/pkgs/development/python-modules/pyside/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchurl, cmake, python, buildPythonPackage, pysideGeneratorrunner, pysideShiboken, qt4 }:
+{ lib, fetchurl, cmake, buildPythonPackage, pysideGeneratorrunner, pysideShiboken, qt4 }:
 
 # This derivation provides a Python module and should therefore be called via `python-packages.nix`.
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/pytest-cram/default.nix b/pkgs/development/python-modules/pytest-cram/default.nix
index 4555479af43..3ca4f832c8c 100644
--- a/pkgs/development/python-modules/pytest-cram/default.nix
+++ b/pkgs/development/python-modules/pytest-cram/default.nix
@@ -1,4 +1,4 @@
-{lib, buildPythonPackage, fetchPypi, pytest, cram, bash, writeText}:
+{lib, buildPythonPackage, fetchPypi, pytest, cram, bash}:
 
 buildPythonPackage rec {
   version = "0.2.0";
diff --git a/pkgs/development/python-modules/pytest-flake8/default.nix b/pkgs/development/python-modules/pytest-flake8/default.nix
index c2d205f2833..101594750fd 100644
--- a/pkgs/development/python-modules/pytest-flake8/default.nix
+++ b/pkgs/development/python-modules/pytest-flake8/default.nix
@@ -1,4 +1,4 @@
-{lib, buildPythonPackage, fetchPypi, fetchpatch, pytest, flake8}:
+{lib, buildPythonPackage, fetchPypi, pytest, flake8}:
 
 buildPythonPackage rec {
   pname = "pytest-flake8";
diff --git a/pkgs/development/python-modules/pytest-mock/default.nix b/pkgs/development/python-modules/pytest-mock/default.nix
index c12d4b8add0..163063ae57f 100644
--- a/pkgs/development/python-modules/pytest-mock/default.nix
+++ b/pkgs/development/python-modules/pytest-mock/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, fetchpatch, isPy3k, pytest, mock, setuptools_scm }:
+{ lib, buildPythonPackage, fetchPypi, isPy3k, pytest, mock, setuptools_scm }:
 
 buildPythonPackage rec {
   pname = "pytest-mock";
diff --git a/pkgs/development/python-modules/pytest-xdist/default.nix b/pkgs/development/python-modules/pytest-xdist/default.nix
index 38d34a95854..84f337e1b83 100644
--- a/pkgs/development/python-modules/pytest-xdist/default.nix
+++ b/pkgs/development/python-modules/pytest-xdist/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, buildPythonPackage, isPy3k, execnet, pytest, setuptools_scm, pytest-forked }:
+{ stdenv, fetchPypi, buildPythonPackage, execnet, pytest, setuptools_scm, pytest-forked }:
 
 buildPythonPackage rec {
   pname = "pytest-xdist";
diff --git a/pkgs/development/python-modules/python-oauth2/default.nix b/pkgs/development/python-modules/python-oauth2/default.nix
index f4d87dc035c..e8c71bff18b 100644
--- a/pkgs/development/python-modules/python-oauth2/default.nix
+++ b/pkgs/development/python-modules/python-oauth2/default.nix
@@ -1,5 +1,4 @@
 { lib
-, python
 , buildPythonPackage
 , fetchPypi
 }:
diff --git a/pkgs/development/python-modules/pytorch/default.nix b/pkgs/development/python-modules/pytorch/default.nix
index 18162d105ac..962ebbecbaa 100644
--- a/pkgs/development/python-modules/pytorch/default.nix
+++ b/pkgs/development/python-modules/pytorch/default.nix
@@ -1,7 +1,7 @@
 { buildPythonPackage, pythonOlder,
   cudaSupport ? false, cudatoolkit ? null, cudnn ? null,
-  fetchFromGitHub, fetchpatch, lib, numpy, pyyaml, cffi, typing, cmake,
-  stdenv, linkFarm, symlinkJoin,
+  fetchFromGitHub, lib, numpy, pyyaml, cffi, typing, cmake,
+  linkFarm, symlinkJoin,
   utillinux, which }:
 
 assert cudnn == null || cudatoolkit != null;
diff --git a/pkgs/development/python-modules/pywbem/default.nix b/pkgs/development/python-modules/pywbem/default.nix
index d09a9bbd6d8..159e0ce15fb 100644
--- a/pkgs/development/python-modules/pywbem/default.nix
+++ b/pkgs/development/python-modules/pywbem/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchFromGitHub, fetchpatch, libxml2
+{ stdenv, buildPythonPackage, fetchFromGitHub, libxml2
 , m2crypto, ply, pyyaml, six
 , httpretty, lxml, mock, pytest, requests
 }:
diff --git a/pkgs/development/python-modules/pyxml/default.nix b/pkgs/development/python-modules/pyxml/default.nix
index 646308feece..5a55c1f47bb 100644
--- a/pkgs/development/python-modules/pyxml/default.nix
+++ b/pkgs/development/python-modules/pyxml/default.nix
@@ -1,4 +1,4 @@
-{lib, fetchurl, python, buildPythonPackage, makeWrapper}:
+{fetchurl, python, buildPythonPackage, makeWrapper}:
 
 buildPythonPackage rec {
   pname = "PyXML";
diff --git a/pkgs/development/python-modules/pyzmq/default.nix b/pkgs/development/python-modules/pyzmq/default.nix
index 26107ea3c4a..4de7777fa8b 100644
--- a/pkgs/development/python-modules/pyzmq/default.nix
+++ b/pkgs/development/python-modules/pyzmq/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, buildPythonPackage
+{ buildPythonPackage
 , fetchPypi
 , pytest
 , tornado
diff --git a/pkgs/development/python-modules/qiskit/default.nix b/pkgs/development/python-modules/qiskit/default.nix
index 1eda590a864..dae43aa0462 100644
--- a/pkgs/development/python-modules/qiskit/default.nix
+++ b/pkgs/development/python-modules/qiskit/default.nix
@@ -2,8 +2,6 @@
 , isPy3k
 , buildPythonPackage
 , fetchPypi
-, fetchurl
-, python
 , numpy
 , scipy
 , sympy
diff --git a/pkgs/development/python-modules/rdflib/default.nix b/pkgs/development/python-modules/rdflib/default.nix
index cdbba180673..badaf9b3787 100644
--- a/pkgs/development/python-modules/rdflib/default.nix
+++ b/pkgs/development/python-modules/rdflib/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, buildPythonPackage
+{ buildPythonPackage
 , fetchPypi
 , isodate
 , html5lib
diff --git a/pkgs/development/python-modules/redis/default.nix b/pkgs/development/python-modules/redis/default.nix
index de2683595e5..6ea233f695b 100644
--- a/pkgs/development/python-modules/redis/default.nix
+++ b/pkgs/development/python-modules/redis/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, buildPythonPackage }:
+{ fetchPypi, buildPythonPackage }:
 buildPythonPackage rec {
   pname = "redis";
   version = "2.10.6";
diff --git a/pkgs/development/python-modules/reportlab/default.nix b/pkgs/development/python-modules/reportlab/default.nix
index a356db74f07..0b3e84c3512 100644
--- a/pkgs/development/python-modules/reportlab/default.nix
+++ b/pkgs/development/python-modules/reportlab/default.nix
@@ -1,9 +1,7 @@
-{ lib
-, buildPythonPackage
+{ buildPythonPackage
 , fetchPypi
 , freetype
 , pillow
-, pip
 , glibcLocales
 , python
 , isPyPy
diff --git a/pkgs/development/python-modules/requests-mock/default.nix b/pkgs/development/python-modules/requests-mock/default.nix
index 6bd294671de..2286d9c2dc7 100644
--- a/pkgs/development/python-modules/requests-mock/default.nix
+++ b/pkgs/development/python-modules/requests-mock/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, python
+{ buildPythonPackage, fetchPypi, python
 , mock, testrepository, testtools
 , requests, six }:
 
diff --git a/pkgs/development/python-modules/responses/default.nix b/pkgs/development/python-modules/responses/default.nix
index 4cc74431fc8..662045a9ce1 100644
--- a/pkgs/development/python-modules/responses/default.nix
+++ b/pkgs/development/python-modules/responses/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi
+{ buildPythonPackage, fetchPypi
 , cookies, mock, requests, six }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/rhpl/default.nix b/pkgs/development/python-modules/rhpl/default.nix
index d9c87918176..ed0bf42ae68 100644
--- a/pkgs/development/python-modules/rhpl/default.nix
+++ b/pkgs/development/python-modules/rhpl/default.nix
@@ -1,4 +1,4 @@
-{stdenv, buildPythonPackage, fetchurl, rpmextract, python, wirelesstools, gettext}:
+{buildPythonPackage, fetchurl, rpmextract, python, wirelesstools, gettext}:
 
 buildPythonPackage rec {
   pname = "rhpl";
diff --git a/pkgs/development/python-modules/rubymarshal/default.nix b/pkgs/development/python-modules/rubymarshal/default.nix
index 7184795639c..d8c43c1ea86 100644
--- a/pkgs/development/python-modules/rubymarshal/default.nix
+++ b/pkgs/development/python-modules/rubymarshal/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, python, hypothesis }:
+{ stdenv, buildPythonPackage, fetchPypi, hypothesis }:
 
 buildPythonPackage rec {
   pname = "rubymarshal";
diff --git a/pkgs/development/python-modules/salmon-mail/default.nix b/pkgs/development/python-modules/salmon-mail/default.nix
index ed358213492..c642039d4fe 100644
--- a/pkgs/development/python-modules/salmon-mail/default.nix
+++ b/pkgs/development/python-modules/salmon-mail/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi, pythonOlder, nose, dnspython
+{ stdenv, buildPythonPackage, fetchPypi, nose, dnspython
 ,  chardet, lmtpd, pythondaemon, six, jinja2, mock }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/scikit-image/default.nix b/pkgs/development/python-modules/scikit-image/default.nix
index 6ac3ab5ddb9..1a07e001cae 100644
--- a/pkgs/development/python-modules/scikit-image/default.nix
+++ b/pkgs/development/python-modules/scikit-image/default.nix
@@ -11,7 +11,6 @@
 , pywavelets
 , dask
 , cloudpickle
-, nose
 , pytest
 }:
 
diff --git a/pkgs/development/python-modules/scikitlearn/default.nix b/pkgs/development/python-modules/scikitlearn/default.nix
index edaf7cd90cc..39af29da814 100644
--- a/pkgs/development/python-modules/scikitlearn/default.nix
+++ b/pkgs/development/python-modules/scikitlearn/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchpatch, fetchPypi, python
+{ stdenv, buildPythonPackage, fetchPypi, python
 , nose, pillow
 , gfortran, glibcLocales
 , numpy, scipy
diff --git a/pkgs/development/python-modules/scipy/default.nix b/pkgs/development/python-modules/scipy/default.nix
index 5e57dd3f093..41878b19d08 100644
--- a/pkgs/development/python-modules/scipy/default.nix
+++ b/pkgs/development/python-modules/scipy/default.nix
@@ -1,4 +1,4 @@
-{lib, fetchPypi, python, buildPythonPackage, isPyPy, gfortran, nose, pytest, numpy}:
+{lib, fetchPypi, python, buildPythonPackage, gfortran, nose, pytest, numpy}:
 
 buildPythonPackage rec {
   pname = "scipy";
diff --git a/pkgs/development/python-modules/serversyncstorage/default.nix b/pkgs/development/python-modules/serversyncstorage/default.nix
index 1cef1510ccf..0e4b6cfa1e4 100644
--- a/pkgs/development/python-modules/serversyncstorage/default.nix
+++ b/pkgs/development/python-modules/serversyncstorage/default.nix
@@ -1,5 +1,4 @@
-{ stdenv
-, buildPythonPackage
+{ buildPythonPackage
 , fetchgit
 , isPy27
 , testfixtures
diff --git a/pkgs/development/python-modules/smart_open/default.nix b/pkgs/development/python-modules/smart_open/default.nix
index 006f52f1d38..8c66df80dc5 100644
--- a/pkgs/development/python-modules/smart_open/default.nix
+++ b/pkgs/development/python-modules/smart_open/default.nix
@@ -1,6 +1,5 @@
 { lib
 , buildPythonPackage
-, isPy3k
 , fetchPypi
 , boto
 , boto3
diff --git a/pkgs/development/python-modules/spacy/default.nix b/pkgs/development/python-modules/spacy/default.nix
index 16c1841a3d6..d2a306356b6 100644
--- a/pkgs/development/python-modules/spacy/default.nix
+++ b/pkgs/development/python-modules/spacy/default.nix
@@ -1,7 +1,5 @@
 { lib
-, pkgs
 , buildPythonPackage
-, python
 , fetchPypi
 , pythonOlder
 , html5lib
diff --git a/pkgs/development/python-modules/sqlalchemy/default.nix b/pkgs/development/python-modules/sqlalchemy/default.nix
index 211419f86b1..50d58877b7e 100644
--- a/pkgs/development/python-modules/sqlalchemy/default.nix
+++ b/pkgs/development/python-modules/sqlalchemy/default.nix
@@ -3,7 +3,6 @@
 , buildPythonPackage
 , pytest
 , mock
-, pytest_xdist
 , isPy3k
 , pysqlite
 }:
diff --git a/pkgs/development/python-modules/sseclient/default.nix b/pkgs/development/python-modules/sseclient/default.nix
index 9ac04e18e4f..a122a0c40ec 100644
--- a/pkgs/development/python-modules/sseclient/default.nix
+++ b/pkgs/development/python-modules/sseclient/default.nix
@@ -1,6 +1,6 @@
 { stdenv, buildPythonPackage, fetchPypi
 , requests, six
-, backports_unittest-mock, pluggy, pytest, pytestrunner }:
+, backports_unittest-mock, pytest, pytestrunner }:
 
 buildPythonPackage rec {
   pname = "sseclient";
diff --git a/pkgs/development/python-modules/syncserver/default.nix b/pkgs/development/python-modules/syncserver/default.nix
index 3c650bd60dd..7a93d64a89f 100644
--- a/pkgs/development/python-modules/syncserver/default.nix
+++ b/pkgs/development/python-modules/syncserver/default.nix
@@ -1,5 +1,4 @@
-{ stdenv
-, buildPythonPackage
+{ buildPythonPackage
 , fetchgit
 , isPy27
 , unittest2
diff --git a/pkgs/development/python-modules/tempora/default.nix b/pkgs/development/python-modules/tempora/default.nix
index c56a5d7889f..9f8087a305d 100644
--- a/pkgs/development/python-modules/tempora/default.nix
+++ b/pkgs/development/python-modules/tempora/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, fetchPypi
+{ buildPythonPackage, fetchPypi
 , setuptools_scm
 , six, pytz}:
 
diff --git a/pkgs/development/python-modules/tensorflow/bin.nix b/pkgs/development/python-modules/tensorflow/bin.nix
index 21b21f174d0..4e3621157f9 100644
--- a/pkgs/development/python-modules/tensorflow/bin.nix
+++ b/pkgs/development/python-modules/tensorflow/bin.nix
@@ -2,7 +2,7 @@
 , lib
 , fetchurl
 , buildPythonPackage
-, isPy3k, isPy35, isPy36, pythonOlder
+, isPy3k, isPy36, pythonOlder
 , astor
 , gast
 , numpy
diff --git a/pkgs/development/python-modules/testfixtures/default.nix b/pkgs/development/python-modules/testfixtures/default.nix
index 628be2e946a..1e35d95c5e1 100644
--- a/pkgs/development/python-modules/testfixtures/default.nix
+++ b/pkgs/development/python-modules/testfixtures/default.nix
@@ -1,5 +1,5 @@
 { stdenv, buildPythonPackage, fetchPypi
-, mock, manuel, pytest, sybil, zope_component, django }:
+, mock, manuel, pytest, sybil, zope_component }:
 
 buildPythonPackage rec {
   pname = "testfixtures";
diff --git a/pkgs/development/python-modules/textacy/default.nix b/pkgs/development/python-modules/textacy/default.nix
index d4243024821..9b22ad3e545 100644
--- a/pkgs/development/python-modules/textacy/default.nix
+++ b/pkgs/development/python-modules/textacy/default.nix
@@ -4,7 +4,6 @@
 , fetchPypi
 , cachetools
 , cld2-cffi
-, cython
 , cytoolz
 , ftfy
 , ijson
diff --git a/pkgs/development/python-modules/thespian/default.nix b/pkgs/development/python-modules/thespian/default.nix
index 0ffaf315d54..0ced52c7ba1 100644
--- a/pkgs/development/python-modules/thespian/default.nix
+++ b/pkgs/development/python-modules/thespian/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, buildPythonPackage, lib }:
+{ fetchPypi, buildPythonPackage, lib }:
 
 buildPythonPackage rec {
   version = "3.9.2";
diff --git a/pkgs/development/python-modules/thinc/default.nix b/pkgs/development/python-modules/thinc/default.nix
index b5812820023..88e6c8d1674 100644
--- a/pkgs/development/python-modules/thinc/default.nix
+++ b/pkgs/development/python-modules/thinc/default.nix
@@ -1,6 +1,5 @@
 { stdenv
 , lib
-, pkgs
 , buildPythonPackage
 , fetchPypi
 , pythonOlder
@@ -11,7 +10,6 @@
 , msgpack-python
 , preshed
 , numpy
-, python
 , murmurhash
 , pathlib
 , hypothesis
diff --git a/pkgs/development/python-modules/tiros/default.nix b/pkgs/development/python-modules/tiros/default.nix
index b55c42cfa56..edc4bbdebb1 100644
--- a/pkgs/development/python-modules/tiros/default.nix
+++ b/pkgs/development/python-modules/tiros/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, buildPythonPackage
+{ fetchPypi, buildPythonPackage
 , semantic-version, boto3, flask, docutils, requests
 }:
 
diff --git a/pkgs/development/python-modules/todoist/default.nix b/pkgs/development/python-modules/todoist/default.nix
index 829d7bcfcb2..6f3eae60c63 100644
--- a/pkgs/development/python-modules/todoist/default.nix
+++ b/pkgs/development/python-modules/todoist/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchPypi, python, buildPythonPackage
+{ stdenv, fetchPypi, buildPythonPackage
 , requests }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/tokenserver/default.nix b/pkgs/development/python-modules/tokenserver/default.nix
index c6efe5ba239..44fcb9b46ff 100644
--- a/pkgs/development/python-modules/tokenserver/default.nix
+++ b/pkgs/development/python-modules/tokenserver/default.nix
@@ -1,5 +1,4 @@
-{ stdenv
-, buildPythonPackage
+{ buildPythonPackage
 , fetchgit
 , testfixtures
 , cornice
diff --git a/pkgs/development/python-modules/tox/default.nix b/pkgs/development/python-modules/tox/default.nix
index 359f13e2a00..4ceeb026634 100644
--- a/pkgs/development/python-modules/tox/default.nix
+++ b/pkgs/development/python-modules/tox/default.nix
@@ -1,5 +1,4 @@
-{ lib
-, buildPythonPackage
+{ buildPythonPackage
 , fetchPypi
 , py
 , virtualenv
diff --git a/pkgs/development/python-modules/tqdm/default.nix b/pkgs/development/python-modules/tqdm/default.nix
index 87fa393ce5e..0b77f706801 100644
--- a/pkgs/development/python-modules/tqdm/default.nix
+++ b/pkgs/development/python-modules/tqdm/default.nix
@@ -5,8 +5,6 @@
 , coverage
 , glibcLocales
 , flake8
-, matplotlib
-, pandas
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/typed-ast/default.nix b/pkgs/development/python-modules/typed-ast/default.nix
index 0cfc8c3e14a..5bd0f5f81d2 100644
--- a/pkgs/development/python-modules/typed-ast/default.nix
+++ b/pkgs/development/python-modules/typed-ast/default.nix
@@ -1,4 +1,4 @@
-{ buildPythonPackage, fetchPypi, isPy3k, lib, pythonOlder }:
+{ buildPythonPackage, fetchPypi, lib, pythonOlder }:
 buildPythonPackage rec {
   pname = "typed-ast";
   version = "1.1.0";
diff --git a/pkgs/development/python-modules/tzlocal/default.nix b/pkgs/development/python-modules/tzlocal/default.nix
index 3bb75fb2ac2..8320500fc14 100644
--- a/pkgs/development/python-modules/tzlocal/default.nix
+++ b/pkgs/development/python-modules/tzlocal/default.nix
@@ -1,5 +1,5 @@
 { stdenv, buildPythonPackage, fetchPypi
-, tzlocal, pytz }:
+, pytz }:
 
 buildPythonPackage rec {
   pname = "tzlocal";
diff --git a/pkgs/development/python-modules/ukpostcodeparser/default.nix b/pkgs/development/python-modules/ukpostcodeparser/default.nix
index 235f33da599..42588347c85 100644
--- a/pkgs/development/python-modules/ukpostcodeparser/default.nix
+++ b/pkgs/development/python-modules/ukpostcodeparser/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPythonPackage, fetchPypi }:
+{ lib, buildPythonPackage, fetchPypi }:
 
 buildPythonPackage rec {
   pname = "UkPostcodeParser";
diff --git a/pkgs/development/python-modules/uranium/default.nix b/pkgs/development/python-modules/uranium/default.nix
index 276ed481601..eb2fa2bd042 100644
--- a/pkgs/development/python-modules/uranium/default.nix
+++ b/pkgs/development/python-modules/uranium/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPythonPackage, fetchFromGitHub, python, cmake
+{ stdenv, buildPythonPackage, fetchFromGitHub, python, cmake
 , pyqt5, numpy, scipy, libarcus, doxygen, gettext, pythonOlder }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/vcrpy/default.nix b/pkgs/development/python-modules/vcrpy/default.nix
index ab4ce1be2b1..805941cab60 100644
--- a/pkgs/development/python-modules/vcrpy/default.nix
+++ b/pkgs/development/python-modules/vcrpy/default.nix
@@ -7,7 +7,6 @@
 , contextlib2
 , wrapt
 , pytest
-, httpbin
 , pytest-httpbin
 , yarl
 , pythonOlder
diff --git a/pkgs/development/python-modules/warrant/default.nix b/pkgs/development/python-modules/warrant/default.nix
index c152271af33..ef6089baa50 100644
--- a/pkgs/development/python-modules/warrant/default.nix
+++ b/pkgs/development/python-modules/warrant/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchFromGitHub, fetchPypi, fetchpatch
+{ lib, buildPythonPackage, fetchFromGitHub, fetchpatch
 , mock
 , boto3, envs, python-jose, requests }:
 
diff --git a/pkgs/development/python-modules/wptserve/default.nix b/pkgs/development/python-modules/wptserve/default.nix
index b2ce75c43c3..32145623e4d 100644
--- a/pkgs/development/python-modules/wptserve/default.nix
+++ b/pkgs/development/python-modules/wptserve/default.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchPypi
 , isPy3k
diff --git a/pkgs/development/python-modules/wsproto/default.nix b/pkgs/development/python-modules/wsproto/default.nix
index e98fcf205fd..c3ac5b51cb0 100644
--- a/pkgs/development/python-modules/wsproto/default.nix
+++ b/pkgs/development/python-modules/wsproto/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, h11, enum34 }:
+{ buildPythonPackage, fetchPypi, h11, enum34 }:
 
 buildPythonPackage rec {
   pname = "wsproto";
diff --git a/pkgs/development/python-modules/xarray/default.nix b/pkgs/development/python-modules/xarray/default.nix
index 039a751a5e1..a9041f9a76f 100644
--- a/pkgs/development/python-modules/xarray/default.nix
+++ b/pkgs/development/python-modules/xarray/default.nix
@@ -5,7 +5,6 @@
 , numpy
 , pandas
 , python
-, fetchurl
 }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/zeep/default.nix b/pkgs/development/python-modules/zeep/default.nix
index 418fcebaefd..f283479c8de 100644
--- a/pkgs/development/python-modules/zeep/default.nix
+++ b/pkgs/development/python-modules/zeep/default.nix
@@ -19,7 +19,6 @@
 , pytest
 , pytestcov
 , requests-mock
-, testtools
 , tornado
 }:
 
diff --git a/pkgs/development/python-modules/zodb/default.nix b/pkgs/development/python-modules/zodb/default.nix
index 9aab2ba9e84..c23f332638d 100644
--- a/pkgs/development/python-modules/zodb/default.nix
+++ b/pkgs/development/python-modules/zodb/default.nix
@@ -1,7 +1,6 @@
 { stdenv
 , fetchPypi
 , buildPythonPackage
-, isPy3k
 , zope_testrunner
 , transaction
 , six
diff --git a/pkgs/development/python-modules/zope_testrunner/default.nix b/pkgs/development/python-modules/zope_testrunner/default.nix
index e2bf3a569d0..a4988332b22 100644
--- a/pkgs/development/python-modules/zope_testrunner/default.nix
+++ b/pkgs/development/python-modules/zope_testrunner/default.nix
@@ -1,7 +1,6 @@
 { stdenv
 , buildPythonPackage
 , fetchPypi
-, fetchpatch
 , zope_interface
 , zope_exceptions
 , zope_testing