python: make 2.6 and 2.7 expr similar, introduce includeModules

When includeModules is true, python is built with all optional modules
as part of derivation.

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

···
-{ stdenv, fetchurl, zlib ? null, zlibSupport ? true, bzip2
-, sqlite, tcl, tk, x11, openssl, readline, db, ncurses, gdbm
-}:
+{ stdenv, fetchurl, zlib ? null, zlibSupport ? true, bzip2, includeModules ? false
+, sqlite, tcl, tk, x11, openssl, readline, db, ncurses, gdbm}:
 
 assert zlibSupport -> zlib != null;
 
 with stdenv.lib;
 
 let
-
   majorVersion = "2.6";
   version = "${majorVersion}.9";
 
···
       # the Nix store to 1.  So treat that as a special case.
       ./nix-store-mtime.patch
     ];
+    
+  preConfigure = ''
+      # Purity.
+      for i in /usr /sw /opt /pkg; do
+        substituteInPlace ./setup.py --replace $i /no-such-path
+      done
+    '' + optionalString (stdenv ? gcc && stdenv.gcc.libc != null) ''
+      for i in Lib/plat-*/regen; do
+        substituteInPlace $i --replace /usr/include/ ${stdenv.gcc.libc}/include/
+      done
+    '' + optionalString stdenv.isCygwin ''
+      # On Cygwin, `make install' tries to read this Makefile.
+      mkdir -p $out/lib/python${majorVersion}/config
+      touch $out/lib/python${majorVersion}/config/Makefile
+      mkdir -p $out/include/python${majorVersion}
+      touch $out/include/python${majorVersion}/pyconfig.h
+    '';
 
   buildInputs =
     optional (stdenv ? gcc && stdenv.gcc.libc != null) stdenv.gcc.libc ++
-    [ bzip2 openssl ]
+    [ bzip2 openssl ]++ optionals includeModules [ db openssl ncurses gdbm readline x11 tcl tk sqlite ]
     ++ optional zlibSupport zlib;
 
 
   # Build the basic Python interpreter without modules that have
   # external dependencies.
   python = stdenv.mkDerivation {
-    name = "python-${version}";
+    name = "python${if includeModules then "" else "-minimal"}-${version}";
 
-    inherit majorVersion version src patches buildInputs;
+    inherit majorVersion version src patches buildInputs preConfigure;
 
     C_INCLUDE_PATH = concatStringsSep ":" (map (p: "${p}/include") buildInputs);
     LIBRARY_PATH = concatStringsSep ":" (map (p: "${p}/lib") buildInputs);
 
     configureFlags = "--enable-shared --with-threads --enable-unicode";
 
-    preConfigure =
-      ''
-        # Purity.
-        for i in /usr /sw /opt /pkg; do
-          substituteInPlace ./setup.py --replace $i /no-such-path
-        done
-      '' + optionalString (stdenv ? gcc && stdenv.gcc.libc != null) ''
-        for i in Lib/plat-*/regen; do
-          substituteInPlace $i --replace /usr/include/ ${stdenv.gcc.libc}/include/
-        done
-      '';
-
     NIX_CFLAGS_COMPILE = optionalString stdenv.isDarwin "-msse2";
 
     setupHook = ./setup-hook.sh;
···
         ln -s $out/lib/python${majorVersion}/pdb.py $out/bin/pdb${majorVersion}
         mv $out/share/man/man1/{python.1,python2.6.1}
         ln -s $out/share/man/man1/{python2.6.1,python.1}
+        
+        paxmark E $out/bin/python${majorVersion}
+        
+        ${ optionalString includeModules "$out/bin/python ./setup.py build_ext"}
       '';
 
     passthru = rec {
···
       '';
       license = stdenv.lib.licenses.psfl;
       platforms = stdenv.lib.platforms.all;
-      maintainers = with stdenv.lib.maintainers; [ simons chaoflow ];
+      maintainers = with stdenv.lib.maintainers; [ simons chaoflow iElectric ];
     };
   };
 
···
     , internalName ? "_" + moduleName
     , deps
     }:
-    stdenv.mkDerivation rec {
+    if (includeModules) then null else stdenv.mkDerivation rec {
       name = "python-${moduleName}-${python.version}";
 
-      inherit src patches;
+      inherit src patches preConfigure;
 
       buildInputs = [ python ] ++ deps;
 
       C_INCLUDE_PATH = concatStringsSep ":" (map (p: "${p}/include") buildInputs);
       LIBRARY_PATH = concatStringsSep ":" (map (p: "${p}/lib") buildInputs);
-
-      configurePhase = "true";
 
       buildPhase =
         ''

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

···
-{ stdenv, fetchurl, zlib ? null, zlibSupport ? true, bzip2
+{ stdenv, fetchurl, zlib ? null, zlibSupport ? true, bzip2, includeModules ? false
 , sqlite, tcl, tk, x11, openssl, readline, db, ncurses, gdbm, libX11 }:
 
 assert zlibSupport -> zlib != null;
···
 with stdenv.lib;
 
 let
-
   majorVersion = "2.7";
   version = "${majorVersion}.8";
 
···
       # if DETERMINISTIC_BUILD env var is set
       ./deterministic-build.patch
     ];
-
-  postPatch = stdenv.lib.optionalString (stdenv.gcc.libc != null) ''
-    substituteInPlace ./Lib/plat-generic/regen \
-                      --replace /usr/include/netinet/in.h \
-                                ${stdenv.gcc.libc}/include/netinet/in.h
-  '';
-
-  buildInputs =
-    optional (stdenv ? gcc && stdenv.gcc.libc != null) stdenv.gcc.libc ++
-    [ bzip2 openssl ]
-    ++ optional zlibSupport zlib;
-
-  ensurePurity =
-    ''
+    
+  preConfigure = ''
       # Purity.
       for i in /usr /sw /opt /pkg; do
         substituteInPlace ./setup.py --replace $i /no-such-path
       done
+    '' + optionalString (stdenv ? gcc && stdenv.gcc.libc != null) ''
+      for i in Lib/plat-*/regen; do
+        substituteInPlace $i --replace /usr/include/ ${stdenv.gcc.libc}/include/
+      done
+    '' + optionalString stdenv.isCygwin ''
+      # On Cygwin, `make install' tries to read this Makefile.
+      mkdir -p $out/lib/python${majorVersion}/config
+      touch $out/lib/python${majorVersion}/config/Makefile
+      mkdir -p $out/include/python${majorVersion}
+      touch $out/include/python${majorVersion}/pyconfig.h
     '';
 
+  buildInputs =
+    optional (stdenv ? gcc && stdenv.gcc.libc != null) stdenv.gcc.libc ++
+    [ bzip2 openssl ] ++ optionals includeModules [ db openssl ncurses gdbm libX11 readline x11 tcl tk sqlite ]
+    ++ optional zlibSupport zlib;
+
   # Build the basic Python interpreter without modules that have
   # external dependencies.
   python = stdenv.mkDerivation {
     name = "python-${version}";
 
-    inherit majorVersion version src patches postPatch buildInputs;
+    inherit majorVersion version src patches buildInputs preConfigure;
 
     LDFLAGS = stdenv.lib.optionalString (!stdenv.isDarwin) "-lgcc_s";
     C_INCLUDE_PATH = concatStringsSep ":" (map (p: "${p}/include") buildInputs);
···
 
     configureFlags = "--enable-shared --with-threads --enable-unicode";
 
-    preConfigure = "${ensurePurity}" + optionalString stdenv.isCygwin
-      ''
-        # On Cygwin, `make install' tries to read this Makefile.
-        mkdir -p $out/lib/python${majorVersion}/config
-        touch $out/lib/python${majorVersion}/config/Makefile
-        mkdir -p $out/include/python${majorVersion}
-        touch $out/include/python${majorVersion}/pyconfig.h
-      '';
-
     NIX_CFLAGS_COMPILE = optionalString stdenv.isDarwin "-msse2";
 
     setupHook = ./setup-hook.sh;
···
         ln -s $out/share/man/man1/{python2.7.1.gz,python.1.gz}
 
         paxmark E $out/bin/python${majorVersion}
+        
+        ${ optionalString includeModules "$out/bin/python ./setup.py build_ext"}
       '';
 
     passthru = rec {
···
       '';
       license = stdenv.lib.licenses.psfl;
       platforms = stdenv.lib.platforms.all;
-      maintainers = with stdenv.lib.maintainers; [ simons chaoflow ];
+      maintainers = with stdenv.lib.maintainers; [ simons chaoflow iElectric ];
     };
   };
 
···
     , internalName ? "_" + moduleName
     , deps
     }:
-    stdenv.mkDerivation rec {
+    if (includeModules) then null else stdenv.mkDerivation rec {
       name = "python-${moduleName}-${python.version}";
 
-      inherit src patches postPatch;
+      inherit src patches preConfigure;
 
       buildInputs = [ python ] ++ deps;
 
       C_INCLUDE_PATH = concatStringsSep ":" (map (p: "${p}/include") buildInputs);
       LIBRARY_PATH = concatStringsSep ":" (map (p: "${p}/lib") buildInputs);
 
-      configurePhase = "${ensurePurity}";
-
-      buildPhase =
-        ''
-          # Fake the build environment that setup.py expects.
-          ln -s ${python}/include/python*/pyconfig.h .
-          ln -s ${python}/lib/python*/config/Setup Modules/
-          ln -s ${python}/lib/python*/config/Setup.local Modules/
-
+      buildPhase = ''
           substituteInPlace setup.py --replace 'self.extensions = extensions' \
             'self.extensions = [ext for ext in self.extensions if ext.name in ["${internalName}"]]'