NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST emacs-snapshot-23-2009-02-16 x86_64-linux /nix/store/ywqlrlm8gvik2i5y5zp7hm50719mvn8d-emacs-snapshot-23-2009-02-16.drv /nix/store/ahg84nbc4g08g80mi1wr28ir6bsi9rp5-emacs-snapshot-23-2009-02-16