NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST perl-5.10.0 x86_64-linux /nix/store/mj54q0q35s9rv9c5dzblv14yvcfw5s0q-perl-5.10.0.drv /nix/store/y0s7qlxqr35cqscfg9xy7pvvjmx1hgmn-perl-5.10.0