NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST gsl-1.12 i686-linux /nix/store/fb9jz69dlgp8gr38bx4lh3q6dz8ww24j-gsl-1.12.drv /nix/store/iy50ca5vydv5s59wl2ai3wr0fbwbcny1-gsl-1.12