NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST db4-4.5.20 x86_64-linux /nix/store/vjc2i2rvv1vvnsl1nv4lik8d94pprbjk-db4-4.5.20.drv /nix/store/f2z48c5yzyw067yqz8x54dxz0cqx2b6x-db4-4.5.20