* Build those Python modules in the Python distribution that require

additional dependencies (e.g. SQLite, X11, or Tcl/Tk) outside the
  main Python package (i.e., pythonBase).  This makes pythonFull
  unnecessary: you can just pass the additional modules as
  buildInputs to packages that require them, e.g.

    buildInputs = [ pythonModules.sqlite3 ];

svn path=/nixpkgs/branches/modular-python/; revision=25364

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

@@ -0,0 +1,70 @@
+{ stdenv, python, sqlite, tcl, tk, x11, openssl, readline }:
+
+with stdenv.lib;
+
+let 
+
+  buildInternalPythonModule =
+    { moduleName
+    , internalName ? "_" + moduleName
+    , deps
+    }:
+    stdenv.mkDerivation rec {
+      name = "python-${moduleName}-${python.version}";
+
+      src = python.src;
+
+      patches = python.patches;
+
+      buildInputs = [ python ] ++ deps;
+
+      C_INCLUDE_PATH = concatStringsSep ":" (map (p: "${p}/include") buildInputs);
+      LIBRARY_PATH = concatStringsSep ":" (map (p: "${p}/lib") buildInputs);
+
+      configurePhase = "true";
+
+      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 ${python}/lib/python*/config/Setup.local Modules/
+
+          substituteInPlace setup.py --replace 'self.extensions = extensions' \
+            'self.extensions = [ext for ext in self.extensions if ext.name in ["${internalName}"]]'
+
+          python ./setup.py build_ext
+        '';
+
+      installPhase =
+        ''
+          dest=$out/lib/${python.libPrefix}/site-packages
+          mkdir -p $dest
+          cp -p $(find . -name "*.so") $dest/
+        '';
+    };
+
+in {
+    
+  sqlite3 = buildInternalPythonModule {
+    moduleName = "sqlite3";
+    deps = [ sqlite ];
+  };
+    
+  tkinter = buildInternalPythonModule {
+    moduleName = "tkinter";
+    deps = [ tcl tk x11 ];
+  };
+    
+  ssl = buildInternalPythonModule {
+    moduleName = "ssl";
+    deps = [ openssl ];
+  };
+    
+  readline = buildInternalPythonModule {
+    moduleName = "readline";
+    internalName = "readline";
+    deps = [ readline ];
+  };
+    
+}