nix-pull pull substitutes from a network cache nix-pull url The command nix-pull obtains a list of pre-built store paths from the URL url, and for each of these store paths, registers a substitute derivation that downloads and unpacks it into the Nix store. This is used to speed up installations: if you attempt to install something that has already been built and stored into the network cache, Nix can transparently re-use the pre-built store paths. The file at url must be compatible with the files created by nix-push. $ nix-pull http://nix.cs.uu.nl/dist/nix/nixpkgs-0.5pre753/MANIFEST