adding libdwg - optional dependency of grass

svn path=/nixpkgs/trunk/; revision=21736

pkgs/development/libraries/libdwg/default.nix

@@ -0,0 +1,18 @@
+{stdenv, fetchurl}:
+
+stdenv.mkDerivation {
+  name = "libdwg-0.3";
+
+  src = fetchurl {
+    url = mirror://sourceforge/libdwg/libdwg-0.3.tar.bz2;
+    sha256 = "0lx7ih00m11qw9wsc5ksmwvi3d80l0yfwnbrn5qfz182w4d3fpc9";
+  };
+
+  meta = {
+    description = "library reading dwg files";
+    homepage = http://libdwg.sourceforge.net/en/;
+    license = "GPLv3";
+    maintainers = [stdenv.lib.maintainers.marcweber];
+    platforms = stdenv.lib.platforms.linux;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -3913,6 +3913,10 @@ let
 
   libcCross = assert crossSystem != null; libcCrossChooser crossSystem.libc;
 
+  libdwg = import ../development/libraries/libdwg {
+    inherit stdenv fetchurl;
+  };
+
   eglibc = import ../development/libraries/eglibc {
     inherit fetchsvn stdenv;
     kernelHeaders = linuxHeaders;