NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST gqview-2.1.5 x86_64-linux /nix/store/q0innhp9s5b9nk8b1z79dhyyqqy2n2fn-gqview-2.1.5.drv /nix/store/ag9ahs0i6brz1c4iahcjpwh97km91yab-gqview-2.1.5