easier version switching

svn path=/nixpkgs/trunk/; revision=5929

2 files changed, 21 insertions, 20 deletions

diff --git a/pkgs/development/libraries/libxml2/default.nix b/pkgs/development/libraries/libxml2/default.nix
index e72ecd52cdb22..140324b34dc4d 100644
--- a/pkgs/development/libraries/libxml2/default.nix
+++ b/pkgs/development/libraries/libxml2/default.nix
@@ -1,20 +1 @@
-{stdenv, fetchurl, zlib, python ? null, pythonSupport ? true}:
-
-assert zlib != null;
-assert pythonSupport -> python != null;
-
-stdenv.mkDerivation {
-  name = "libxml2-2.6.23";
-  builder = ./builder.sh;
-
-  src = fetchurl {
-    url = ftp://xmlsoft.org/libxml2/libxml2-2.6.23.tar.gz;
-    md5 = "0f37385e3ad73cc94db43d6873f4fc3b";
-  };
-
-  python = if pythonSupport then python else null;
-  inherit pythonSupport;
-
-  buildInputs =  if pythonSupport then [python] else [];
-  propagatedBuildInputs = [zlib];
-}
+import ./libxml2-2.6.23.nix
diff --git a/pkgs/development/libraries/libxml2/libxml2-2.6.23.nix b/pkgs/development/libraries/libxml2/libxml2-2.6.23.nix
new file mode 100644
index 0000000000000..e72ecd52cdb22
--- /dev/null
+++ b/pkgs/development/libraries/libxml2/libxml2-2.6.23.nix
@@ -0,0 +1,20 @@
+{stdenv, fetchurl, zlib, python ? null, pythonSupport ? true}:
+
+assert zlib != null;
+assert pythonSupport -> python != null;
+
+stdenv.mkDerivation {
+  name = "libxml2-2.6.23";
+  builder = ./builder.sh;
+
+  src = fetchurl {
+    url = ftp://xmlsoft.org/libxml2/libxml2-2.6.23.tar.gz;
+    md5 = "0f37385e3ad73cc94db43d6873f4fc3b";
+  };
+
+  python = if pythonSupport then python else null;
+  inherit pythonSupport;
+
+  buildInputs =  if pythonSupport then [python] else [];
+  propagatedBuildInputs = [zlib];
+}