1 files changed, 3 insertions, 13 deletions
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 453eda0d611..d6f9bbf288e 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -18,16 +18,7 @@ let
   packages = ( self:
 
 let
-  pythonAtLeast = versionAtLeast python.pythonVersion;
-  pythonOlder = versionOlder python.pythonVersion;
-  isPy27 = python.pythonVersion == "2.7";
-  isPy33 = python.pythonVersion == "3.3";
-  isPy34 = python.pythonVersion == "3.4";
-  isPy35 = python.pythonVersion == "3.5";
-  isPy36 = python.pythonVersion == "3.6";
-  isPy37 = python.pythonVersion == "3.7";
-  isPyPy = strings.substring 0 4 python.executable == "pypy";
-  isPy3k = strings.substring 0 1 python.pythonVersion == "3";
+  inherit (python.passthru) isPy27 isPy33 isPy34 isPy35 isPy36 isPy37 isPy3k isPyPy pythonAtLeast pythonOlder;
 
   callPackage = pkgs.newScope self;
 
@@ -52,7 +43,6 @@ let
       else ff;
 
   buildPythonPackage = makeOverridablePythonPackage ( makeOverridable (callPackage ../development/interpreters/python/build-python-package.nix {
-    inherit bootstrapped-pip;
     flit = self.flit;
     # We want Python libraries to be named like e.g. "python3.6-${name}"
     inherit namePrefix;
@@ -60,7 +50,6 @@ let
   }));
 
   buildPythonApplication = makeOverridablePythonPackage ( makeOverridable (callPackage ../development/interpreters/python/build-python-package.nix {
-    inherit bootstrapped-pip;
     flit = self.flit;
     namePrefix = "";
     toPythonModule = x: x; # Application does not provide modules.
@@ -130,7 +119,8 @@ let
 
 in {
 
-  inherit python bootstrapped-pip pythonAtLeast pythonOlder isPy27 isPy33 isPy34 isPy35 isPy36 isPy37 isPyPy isPy3k buildPythonPackage buildPythonApplication;
+  inherit (python.passthru) isPy27 isPy33 isPy34 isPy35 isPy36 isPy37 isPy3k isPyPy pythonAtLeast pythonOlder;
+  inherit python bootstrapped-pip buildPythonPackage buildPythonApplication;
   inherit fetchPypi callPackage;
   inherit hasPythonModule requiredPythonModules makePythonPath disabledIf;
   inherit toPythonModule toPythonApplication;