separate libxml2 python bindings, added libconvOrLibC dependency

authored by: chaoflow, goibhniu

svn path=/nixpkgs/branches/stdenv-updates/; revision=32596

pkgs/development/libraries/libxml2/default.nix

@@ -1,6 +1,4 @@
-{stdenv, fetchurl, zlib, python ? null, pythonSupport ? true }:
-
-assert pythonSupport -> python != null;
+{ stdenv, fetchurl, libiconvOrLibc, zlib }:
 
 stdenv.mkDerivation {
   name = "libxml2-2.7.7";
@@ -10,15 +8,11 @@ stdenv.mkDerivation {
     sha256 = "03kkknm7xl77qfdig8mzalsi8ljsyblzin18gy3h8zranffrpyzs";
   };
 
-  configureFlags = ''                                                  
-    ${if pythonSupport then "--with-python=${python}" else ""}         
-  '';
-  
-  propagatedBuildInputs = [zlib];
+  propagatedBuildInputs = [ libiconvOrLibc zlib ];
 
   setupHook = ./setup-hook.sh;
 
-  passthru = {inherit pythonSupport;};
+  passthru = { libiconv = libiconvOrLibc; };
 
   meta = {
     homepage = http://xmlsoft.org/;

pkgs/top-level/all-packages.nix

@@ -4234,13 +4234,9 @@ let
 
   libxmi = callPackage ../development/libraries/libxmi { };
 
-  libxml2 = callPackage ../development/libraries/libxml2 {
-    pythonSupport = false;
-  };
+  libxml2 = callPackage ../development/libraries/libxml2 { };
 
-  libxml2Python = libxml2.override {
-    pythonSupport = true;
-  };
+  libxml2Python = pythonPackages.libxml2;
 
   libxmlxx = callPackage ../development/libraries/libxmlxx {
     inherit (gtkLibs) glibmm;

pkgs/top-level/python-packages.nix

@@ -665,6 +665,35 @@ let pythonPackages = python.modules // rec {
   });
 
 
+  libxml2 = buildPythonPackage (rec {
+    name = pkgs.libxml2.name;
+    src = pkgs.libxml2.src;
+
+    buildInputs = [ python ];
+    propagatedBuildInputs = [ pkgs.libxml2 ];
+
+    configureFlags = "--with-python=${python}";
+
+    postConfigure = ''
+      cd python
+      sed -i setup.py \
+          -e "s:^ROOT.*:ROOT = r'${pkgs.libxml2}':" \
+          -e "s:^iconv_includes.*:iconv_includes= r'${pkgs.libxml2.libiconv}':"
+    '';
+
+    # has no tests
+    doCheck = false;
+
+    passthru = { lib = pkgs.libxml2; };
+
+    meta = {
+      homepage = http://xmlsoft.org/;
+      description = "Python bindings for libxml2";
+      license = "bsd";
+    };
+  });
+
+
   lockfile = buildPythonPackage rec {
     name = "lockfile-0.9.1";