gitsvn wrapper adding needed perl libs to environment so that you can use git-svn out of the box

svn path=/nixpkgs/trunk/; revision=11299

pkgs/applications/version-management/git/git-svn-wrapper.nix

@@ -0,0 +1,29 @@
+args: with args;
+if (!args.subversion.perlBindings) then abort "svn perl bindings required to install gitsvnwrapper"
+else args.stdenv.mkDerivation {
+  inherit git perlLibs subversion;
+  name = "git-svn-wrapper";
+  phases = "buildPhase";
+  buildPhase = "
+    gitperllib=\$git/lib/site_perl
+    for i in \$perlLibs; do
+      gitperllib=\$gitperllib:\$i/lib/site_perl
+    done
+
+    ensureDir \$out/bin
+    for a in \$git/bin/*; do
+      target=\$out/bin/\$(basename $a)
+      target=\$out/bin/\$(basename $a)
+      echo \"#!/bin/sh
+        export GITPERLLIB=\$gitperllib
+        PATH=\\\$PATH:$subversion/bin
+        $a \\\"\\\$@\\\"
+      \" > \$target
+      chmod +x \$target
+    done
+  ";
+
+  meta = { 
+      description = "simple wrapper around git adding env variables so that git-svn works without extra work";
+  };
+}

pkgs/top-level/all-packages.nix

@@ -5062,6 +5062,11 @@ let pkgs = rec {
     emacs = if (getConfig ["git" "useEmacs"] true) then emacs else null;
   };
 
+  gitsvnwrapper = import ../applications/version-management/git/git-svn-wrapper.nix {
+    inherit subversion git stdenv;
+    perlLibs = [ perlLWP perlURI perlTermReadKey subversion ];
+  };
+
   gkrellm = import ../applications/misc/gkrellm {
     inherit fetchurl stdenv gettext pkgconfig;
     inherit (gtkLibs) glib gtk;