NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST gzip-1.3.12 x86_64-linux /nix/store/f22yfva9p3mc52v2l8bpy2dbn2j89vd6-gzip-1.3.12.drv /nix/store/qkafg4wmrvl3m3dbbpax1kfc2zy4nq6b-gzip-1.3.12