Add PODIFF, a tool to diff PO files

pkgs/tools/text/podiff/default.nix

@@ -0,0 +1,24 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  name = "podiff-${version}";
+  version = "1.1";
+
+  src = fetchurl {
+    url = "ftp://download.gnu.org.ua/pub/release/podiff/podiff-1.1.tar.gz";
+    sha256 = "1zz6bcmka5zvk2rq775qv122lqh54aijkxlghvx7z0r6kh880x59";
+  };
+
+  patchPhase = ''
+    sed "s#PREFIX=/usr#PREFIX=$out#g" -i Makefile
+    mkdir -p $out/bin
+    mkdir -p $out/share/man/man1
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Finds differences in translations between two PO files, or revisions";
+    homepage = http://puszcza.gnu.org.ua/software/podiff;
+    license = licenses.gpl3Plus;
+    maintainers = [ maintainers.goibhniu ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -1359,6 +1359,8 @@ let
     libpng = libpng12;
   };
 
+  podiff = callPackage ../tools/text/podiff { };
+
   polipo = callPackage ../servers/polipo { };
 
   polkit_gnome = callPackage ../tools/security/polkit-gnome { };