nix-store --export - export store paths to a Nix Archive

nix-store --export paths…

The operation --export writes a serialisation of the specified store paths to standard output in a format that can be imported into another Nix store with nix-store --import. This is like nix-store --dump, except that the NAR archive produced by that command doesn’t contain the necessary meta-information to allow it to be imported into another Nix store (namely, the set of references of the path).

This command does not produce a closure of the specified paths, so if a store path references other store paths that are missing in the target Nix store, the import will fail.

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To copy a whole closure, do something like:

$ nix-store --export $(nix-store --query --requisites paths) > out

To import the whole closure again, run:

$ nix-store --import < out