pythonPackages: remove `name` attribute`

The `buildPython*` function computes name from `pname` and `version`.
This change removes `name` attribute from all expressions in
`pkgs/development/python-modules`.

While at it, some other minor changes were made as well, such as
replacing `fetchurl` calls with `fetchPypi`.

1 files changed, 3 insertions, 4 deletions

diff --git a/pkgs/applications/audio/picard/default.nix b/pkgs/applications/audio/picard/default.nix
index 677c60399e5..26f35f25865 100644
--- a/pkgs/applications/audio/picard/default.nix
+++ b/pkgs/applications/audio/picard/default.nix
@@ -1,11 +1,10 @@
 { stdenv, python2Packages, fetchurl, gettext, chromaprint }:
 
 let
-  version = "1.4.2";
   pythonPackages = python2Packages;
-in pythonPackages.buildPythonApplication {
-  name = "picard-${version}";
-  namePrefix = "";
+in pythonPackages.buildPythonApplication rec {
+  pname = "picard";
+  version = "1.4.2";
 
   src = fetchurl {
     url = "http://ftp.musicbrainz.org/pub/musicbrainz/picard/picard-${version}.tar.gz";