python 2.6.3: initial version of python 2.6 support

The build succeeds on i686-linux. Other platforms look good, too,
because there were hardly any changes necessary to update the expression
from 2.5.

svn path=/nixpkgs/trunk/; revision=17889

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

@@ -0,0 +1,86 @@
+{ stdenv, fetchurl, zlib ? null, zlibSupport ? true, bzip2
+, gdbmSupport ? true, gdbm ? null
+, sqlite ? null
+, db4 ? null
+, readline ? null
+, openssl ? null
+, tk ? null
+, tcl ? null
+, libX11 ? null
+, xproto ? null
+}:
+
+assert zlibSupport -> zlib != null;
+assert gdbmSupport -> gdbm != null;
+
+with stdenv.lib;
+
+let
+
+  buildInputs =
+    optional (stdenv ? gcc && stdenv.gcc.libc != null) stdenv.gcc.libc ++
+    [bzip2]
+    ++ optional zlibSupport zlib
+    ++ optional gdbmSupport gdbm
+    ++ optional (sqlite != null) sqlite
+    ++ optional (db4 != null) db4
+    ++ optional (readline != null) readline
+    ++ optional (openssl != null) openssl
+    ++ optional (tk != null) tk
+    ++ optional (tcl != null) tcl
+    ++ optional (libX11 != null) libX11
+    ++ optional (xproto != null) xproto
+    ;
+
+in
+
+stdenv.mkDerivation ( {
+  name = "python-2.6.3";
+
+  src = fetchurl {
+    url = http://www.python.org/ftp/python/2.6.3/Python-2.6.3.tar.bz2;
+    sha256 = "096wxhibhss3clgcj5n3xx5wmdsqmywk3h3bp68sicp7sy4y6rs3";
+  };
+
+  patches = [
+    # Look in C_INCLUDE_PATH and LIBRARY_PATH for stuff.
+    ./search-path.patch
+  ];
+
+  inherit buildInputs;
+  C_INCLUDE_PATH = concatStringsSep ":" (map (p: "${p}/include") buildInputs);
+  LIBRARY_PATH = concatStringsSep ":" (map (p: "${p}/lib") buildInputs);
+  configureFlags = "--enable-shared --with-wctype-functions";
+
+  preConfigure = ''
+    # Purity.
+    for i in /usr /sw /opt /pkg; do
+      substituteInPlace ./setup.py --replace $i /no-such-path
+    done
+  '' + (if readline != null then ''
+    export NIX_LDFLAGS="$NIX_LDFLAGS -lncurses"
+  '' else "");
+
+  setupHook = ./setup-hook.sh;
+
+  postInstall = ''
+    rm -rf $out/lib/python2.6/test
+  '';
+
+  passthru = {
+    inherit zlibSupport;
+    sqliteSupport = sqlite != null;
+    db4Support = db4 != null;
+    readlineSupport = readline != null;
+    opensslSupport = openssl != null;
+    tkSupport = (tk != null) && (tcl != null);
+    libPrefix = "python2.6";
+  };
+
+  meta = {
+    # List of supported platforms.
+    #  - On Darwin, `python.exe' fails with "Bus Error".
+    # platforms = stdenv.lib.platforms.allBut "i686-darwin";
+    # Re-enabled for 2.6 to see whether the problem still occurs.
+  };
+} // (if stdenv.system == "i686-darwin" then { NIX_CFLAGS_COMPILE = "-msse2" ; patches = [./search-path.patch ./nolongdouble.patch]; } else {} ) )

pkgs/development/interpreters/python/2.6/nolongdouble.patch

@@ -0,0 +1,20 @@
+diff -rc Python-2.5.4/configure Python-2.5.4-new/configure
+*** Python-2.5.4/configure	Sat Dec 13 15:13:52 2008
+--- Python-2.5.4-new/configure	Fri Jul 24 16:38:05 2009
+***************
+*** 4534,4540 ****
+  	    ;;
+  	# is there any other compiler on Darwin besides gcc?
+  	Darwin*)
+! 	    BASECFLAGS="$BASECFLAGS -Wno-long-double -no-cpp-precomp -mno-fused-madd"
+  	    if test "${enable_universalsdk}"; then
+  		BASECFLAGS="-arch ppc -arch i386 -isysroot ${UNIVERSALSDK} ${BASECFLAGS}"
+  	    fi
+--- 4534,4540 ----
+  	    ;;
+  	# is there any other compiler on Darwin besides gcc?
+  	Darwin*)
+! 	    BASECFLAGS="$BASECFLAGS -no-cpp-precomp -mno-fused-madd"
+  	    if test "${enable_universalsdk}"; then
+  		BASECFLAGS="-arch ppc -arch i386 -isysroot ${UNIVERSALSDK} ${BASECFLAGS}"
+  	    fi

pkgs/development/interpreters/python/2.6/search-path.patch

@@ -0,0 +1,27 @@
+diff -rc Python-2.4.4-orig/setup.py Python-2.4.4/setup.py
+*** Python-2.4.4-orig/setup.py	2006-10-08 19:41:25.000000000 +0200
+--- Python-2.4.4/setup.py	2007-05-27 16:04:54.000000000 +0200
+***************
+*** 279,288 ****
+          # Check for AtheOS which has libraries in non-standard locations
+          if platform == 'atheos':
+              lib_dirs += ['/system/libs', '/atheos/autolnk/lib']
+-             lib_dirs += os.getenv('LIBRARY_PATH', '').split(os.pathsep)
+              inc_dirs += ['/system/include', '/atheos/autolnk/include']
+-             inc_dirs += os.getenv('C_INCLUDE_PATH', '').split(os.pathsep)
+  
+          # OSF/1 and Unixware have some stuff in /usr/ccs/lib (like -ldb)
+          if platform in ['osf1', 'unixware7', 'openunix8']:
+              lib_dirs += ['/usr/ccs/lib']
+--- 279,289 ----
+          # Check for AtheOS which has libraries in non-standard locations
+          if platform == 'atheos':
+              lib_dirs += ['/system/libs', '/atheos/autolnk/lib']
+              inc_dirs += ['/system/include', '/atheos/autolnk/include']
+  
++         lib_dirs += os.getenv('LIBRARY_PATH', '').split(os.pathsep)
++         inc_dirs += os.getenv('C_INCLUDE_PATH', '').split(os.pathsep)
++         
+          # OSF/1 and Unixware have some stuff in /usr/ccs/lib (like -ldb)
+          if platform in ['osf1', 'unixware7', 'openunix8']:
+              lib_dirs += ['/usr/ccs/lib']

pkgs/development/interpreters/python/2.6/setup-hook.sh

@@ -0,0 +1,15 @@
+addPythonPath() {
+    addToSearchPathWithCustomDelimiter : PYTHONPATH $1/lib/python2.6/site-packages
+}
+
+toPythonPath() {
+    local paths="$1"
+    local result=
+    for i in $paths; do
+        p="$i/lib/python2.6/site-packages"
+        result="${result}${result:+:}$p"
+    done
+    echo $result
+}
+
+envHooks=(${envHooks[@]} addPythonPath)

pkgs/top-level/all-packages.nix

@@ -2406,6 +2406,22 @@ let
     xproto = if getConfig ["python" "tkSupport"] true then xlibs.xproto else null;
   };
 
+  python26Base = composedArgsAndFun (import ../development/interpreters/python/2.6) {
+    inherit fetchurl stdenv zlib bzip2 gdbm;
+  };
+
+  python26Full = python26Base.passthru.function {
+    # FIXME: We lack ncurses support, needed, e.g., for `gpsd'.
+    db4 = if getConfig ["python" "db4Support"] true then db4 else null;
+    sqlite = if getConfig ["python" "sqliteSupport"] true then sqlite else null;
+    readline = if getConfig ["python" "readlineSupport"] true then readline else null;
+    openssl = if getConfig ["python" "opensslSupport"] true then openssl else null;
+    tk = if getConfig ["python" "tkSupport"] true then tk else null;
+    tcl = if getConfig ["python" "tkSupport"] true then tcl else null;
+    libX11 = if getConfig ["python" "tkSupport"] true then xlibs.libX11 else null;
+    xproto = if getConfig ["python" "tkSupport"] true then xlibs.xproto else null;
+  };
+
   # new python and lib proposal
   # - adding a python lib to buildinputs should be enough
   #   (handles .pth files by patching site.py