NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST docbook-xsl-1.72.0 x86_64-linux /nix/store/q8jfk8bs0sz1lqklv2innwf4y5l734dv-docbook-xsl-1.72.0.drv /nix/store/fq0d5bjr0dqrhjsh25y0n5qc70cwlh5b-docbook-xsl-1.72.0