python: adding test/test_support.py module in all python versions

- test/test_support.py module is used by many libraries which backport python
  3.0 functionality to 2.6/2.7
- enable subprocess32 tests (now passing for python 2.6/2.7)

pkgs/development/interpreters/python/2.6/default.nix

@@ -67,7 +67,14 @@ let
 
     postInstall =
       ''
-        rm -rf "$out/lib/python${majorVersion}/test"
+        # needed for some packages, especially packages that backport
+        # functionality to 2.x from 3.x
+        for item in $out/lib/python${majorVersion}/test/*; do
+          if [[ "$item" != */test_support.py* ]]; then
+            rm -rf "$item"
+          fi
+        done
+        touch $out/lib/python${majorVersion}/test/__init__.py
         ln -s $out/lib/python${majorVersion}/pdb.py $out/bin/pdb
         ln -s $out/lib/python${majorVersion}/pdb.py $out/bin/pdb${majorVersion}
         mv $out/share/man/man1/{python.1,python2.6.1}

pkgs/development/interpreters/python/2.7/default.nix

@@ -73,7 +73,16 @@ let
 
     postInstall =
       ''
-        rm -rf "$out/lib/python${majorVersion}/test"
+        # needed for some packages, especially packages that backport
+        # functionality to 2.x from 3.x
+        for item in $out/lib/python${majorVersion}/test/*; do
+          if [[ "$item" != */test_support.py* ]]; then
+            rm -rf "$item"
+          else
+            echo $item
+          fi
+        done
+        touch $out/lib/python${majorVersion}/test/__init__.py
         ln -s $out/lib/python${majorVersion}/pdb.py $out/bin/pdb
         ln -s $out/lib/python${majorVersion}/pdb.py $out/bin/pdb${majorVersion}
         ln -s $out/share/man/man1/{python2.7.1.gz,python.1.gz}

pkgs/development/interpreters/python/3.2/default.nix

@@ -58,8 +58,18 @@ stdenv.mkDerivation {
   setupHook = ./setup-hook.sh;
 
   postInstall = ''
-    rm -rf "$out/lib/python${majorVersion}/test"
+    # needed for some packages, especially packages that backport functionality
+    # to 2.x from 3.x
+    for item in $out/lib/python${majorVersion}/test/*; do
+      if [[ "$item" != */test_support.py* ]]; then
+        rm -rf "$item"
+      else
+        echo $item
+      fi
+    done
+    touch $out/lib/python${majorVersion}/test/__init__.py
     ln -s "$out/include/python${majorVersion}m" "$out/include/python${majorVersion}"
+    paxmark E $out/bin/python${majorVersion}
   '';
 
   passthru = rec {

pkgs/development/interpreters/python/3.3/default.nix

@@ -53,9 +53,17 @@ stdenv.mkDerivation {
   setupHook = ./setup-hook.sh;
 
   postInstall = ''
-    rm -rf "$out/lib/python${majorVersion}/test"
+    # needed for some packages, especially packages that backport functionality
+    # to 2.x from 3.x
+    for item in $out/lib/python${majorVersion}/test/*; do
+      if [[ "$item" != */test_support.py* ]]; then
+        rm -rf "$item"
+      else
+        echo $item
+      fi
+    done
+    touch $out/lib/python${majorVersion}/test/__init__.py
     ln -s "$out/include/python${majorVersion}m" "$out/include/python${majorVersion}"
-
     paxmark E $out/bin/python${majorVersion}
   '';
 

pkgs/development/interpreters/python/3.4/default.nix

@@ -54,9 +54,18 @@ stdenv.mkDerivation {
   setupHook = ./setup-hook.sh;
 
   postInstall = ''
-    rm -rf "$out/lib/python${majorVersion}/test"
-    ln -s "$out/include/python${majorVersion}m" "$out/include/python${majorVersion}"
+    # needed for some packages, especially packages that backport functionality
+    # to 2.x from 3.x
+    for item in $out/lib/python${majorVersion}/test/*; do
+      if [[ "$item" != */test_support.py* ]]; then
+        rm -rf "$item"
+      else
+        echo $item
+      fi
+    done
+    touch $out/lib/python${majorVersion}/test/__init__.py
 
+    ln -s "$out/include/python${majorVersion}m" "$out/include/python${majorVersion}"
     paxmark E $out/bin/python${majorVersion}
   '';
 

pkgs/top-level/python-packages.nix

@@ -8608,7 +8608,21 @@ let
       md5 = "754c5ab9f533e764f931136974b618f1";
     };
 
-    doCheck = false;
+    buildInputs = [ pkgs.bash ];
+
+    preConfigure = ''
+      substituteInPlace test_subprocess32.py \
+        --replace '/usr/' '${pkgs.bash}/'
+    '';
+
+    checkPhase = ''
+      TMP_PREFIX=`pwd`/tmp/$name
+      TMP_INSTALL_DIR=$TMP_PREFIX/lib/${pythonPackages.python.libPrefix}/site-packages
+      PYTHONPATH="$TMP_INSTALL_DIR:$PYTHONPATH"
+      mkdir -p $TMP_INSTALL_DIR
+      python setup.py develop --prefix $TMP_PREFIX
+      python test_subprocess32.py
+    '';
 
     meta = {
       homepage = "https://pypi.python.org/pypi/subprocess32";