nix store

Manipulate the Nix store. See also: nix-store. More information: https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-store.html.

• Collect garbage, i.e. remove unused paths to reduce space usage:

nix store gc

• Hard-link identical files together to reduce space usage:

nix store optimise

• Delete a specific store path (most be unused):

nix store delete /nix/store/…

• List a contents of the store path, on a remote store:

nix store --store https://cache.nixos.org ls /nix/store/…

• Show the differences in versions between two store paths, with their respective dependencies:

nix store diff-closures /nix/store/… /nix/store/…