buildPythonPackage: rename nix_run_setup.py to nix_run_setup

If the extension is .py it tends to be picked up by tools, breaking for
example tests.

pkgs/development/python-modules/django_guardian/default.nix

@@ -16,7 +16,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [ django six ];
 
   checkPhase = ''
-    ${python.interpreter} nix_run_setup.py test --addopts="--ignore build"
+    ${python.interpreter} nix_run_setup test --addopts="--ignore build"
   '';
 
   meta = with stdenv.lib; {

pkgs/development/python-modules/intervaltree/default.nix

@@ -17,10 +17,8 @@ buildPythonPackage rec {
 
   checkPhase = ''
     runHook preCheck
-    # pytest will try to run tests for nix_run_setup.py / files in build/lib which fails
-    mv nix_run_setup.py run_setup
     rm build -rf
-    ${python.interpreter} run_setup test
+    ${python.interpreter} nix_run_setup test
     runHook postCheck
   '';
 

pkgs/development/python-modules/natsort/default.nix

@@ -39,9 +39,7 @@ buildPythonPackage rec {
     sha256 = "9ffbfb74bf3fc3905be1b9b052ed865675651e38fcd972ed1ed5c64a02f93cbd";
   };
 
-  # do not run checks on nix_run_setup.py
-  patches = lib.singleton ./setup.patch
-         ++ lib.optional (isPy35 || isPy36) ./python-3.6.3-test-failures.patch;
+  patches = lib.optional (isPy35 || isPy36) ./python-3.6.3-test-failures.patch;
 
   # testing based on project's tox.ini
   checkPhase = ''

pkgs/development/python-modules/natsort/setup.patch

@@ -1,20 +0,0 @@
-diff --git a/setup.cfg b/setup.cfg
-index 604994d..e38c3ec 100644
---- a/setup.cfg
-+++ b/setup.cfg
-@@ -6,6 +6,7 @@ formats = gztar
- 
- [tool:pytest]
- flakes-ignore = 
-+	nix_run_setup.py ALL
- 	natsort/compat/py23.py UndefinedName
- 	natsort/__init__.py UnusedImport
- 	natsort/compat/* UnusedImport
-@@ -14,6 +15,7 @@ flakes-ignore =
- 	test_natsort/test_locale_help.py UnusedImport RedefinedWhileUnused
- 	test_natsort/compat/* UnusedImport
- pep8ignore = 
-+	nix_run_setup.py ALL
- 	natsort/ns_enum.py E126 E241 E123 E221
- 	test_natsort/test_*.py E501 E241 E221
- 	test_natsort/test_natsort_keygen.py E501 E241 E221 E701

pkgs/development/python-modules/progressbar2/default.nix

@@ -37,7 +37,7 @@ buildPythonPackage rec {
   # ignore tests on the nix wrapped setup.py and don't flake .eggs directory
   checkPhase = ''
     runHook preCheck
-    ${python.interpreter} setup.py test --addopts "--ignore=nix_run_setup.py --ignore=.eggs"
+    ${python.interpreter} setup.py test --addopts "--ignore=.eggs"
     runHook postCheck
   '';
 

pkgs/development/python-modules/pytest-flake8/default.nix

@@ -17,7 +17,7 @@ buildPythonPackage rec {
   };
 
   checkPhase = ''
-    pytest --ignore=nix_run_setup.py .
+    pytest .
   '';
 
   meta = {

pkgs/development/python-modules/python-utils/default.nix

@@ -23,7 +23,6 @@ buildPythonPackage rec {
   doCheck = false;
 
   checkPhase = ''
-    rm nix_run_setup.py
     py.test
   '';