add squashfs tools for making/unpacking squashfs images

svn path=/nixpkgs/trunk/; revision=6476

pkgs/os-specific/linux/squashfs/builder.sh

@@ -0,0 +1,17 @@
+source $stdenv/setup
+
+preBuild() {
+  cd squashfs-tools
+}
+
+preBuild=preBuild
+
+installPhase() {
+  ensureDir $out/sbin
+  cp mksquashfs $out/sbin
+  cp unsquashfs $out/sbin
+}
+
+installPhase=installPhase
+
+genericBuild

pkgs/os-specific/linux/squashfs/default.nix

@@ -0,0 +1,11 @@
+{stdenv, fetchurl, zlib}:
+
+stdenv.mkDerivation {
+  name = "squashfs-3.1-r2";
+  builder = ./builder.sh;
+  src = fetchurl {
+    url = http://surfnet.dl.sourceforge.net/sourceforge/squashfs/squashfs3.1-r2.tar.gz;
+    md5 = "c252e5286b142afa54ca49829c51a33f";
+  };
+  buildInputs = [zlib];
+}

pkgs/top-level/all-packages.nix

@@ -2088,6 +2088,10 @@ rec {
     inherit fetchurl stdenv bash gnused coreutils utillinux gnugrep module_init_tools;
   };
 
+  squashfsTools = import ../os-specific/linux/squashfs {
+    inherit fetchurl stdenv zlib;
+  };
+
   usbutils = import ../os-specific/linux/usbutils {
     inherit fetchurl stdenv libusb;
   };