Add GNU Parallel.

svn path=/nixpkgs/trunk/; revision=21552

pkgs/tools/misc/parallel/default.nix

@@ -0,0 +1,46 @@
+{ fetchurl, stdenv, perl }:
+
+stdenv.mkDerivation rec {
+  name = "parallel-20100424";
+
+  src = fetchurl {
+    url = "mirror://gnu/parallel/${name}.tar.bz2";
+    sha256 = "0japyn4n044zpd88czsrfh4lyjmckih25jl671vby8v5mhk42vw4";
+  };
+
+  patchPhase =
+    '' sed -i "src/parallel" -e's|/usr/bin/perl|${perl}/bin/perl|g'
+    '';
+
+  buildInputs = [ perl ];
+  doCheck = true;
+
+  meta = {
+    description = "GNU Parallel, a shell tool for executing jobs in parallel";
+
+    longDescription =
+      '' GNU Parallel is a shell tool for executing jobs in parallel.  A job
+         is typically a single command or a small script that has to be run
+         for each of the lines in the input.  The typical input is a list of
+         files, a list of hosts, a list of users, or a list of tables.
+
+         If you use xargs today you will find GNU Parallel very easy to use.
+         If you write loops in shell, you will find GNU Parallel may be able
+         to replace most of the loops and make them run faster by running
+         jobs in parallel.  If you use ppss or pexec you will find GNU
+         Parallel will often make the command easier to read.
+
+         GNU Parallel makes sure output from the commands is the same output
+         as you would get had you run the commands sequentially.  This makes
+         it possible to use output from GNU Parallel as input for other
+         programs.
+      '';
+
+    homepage = http://www.gnu.org/software/parallel/;
+
+    license = "GPLv3+";
+
+    platforms = stdenv.lib.platforms.all;
+    maintainers = [ stdenv.lib.maintainers.ludo ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -1316,6 +1316,10 @@ let
     inherit fetchurl stdenv;
   };
 
+  parallel = import ../tools/misc/parallel {
+    inherit fetchurl stdenv perl;
+  };
+
   patchutils = import ../tools/text/patchutils {
     inherit fetchurl stdenv;
   };