36b059748d
Documentation on "classic" commands with many sub-commands are notoriously hard to discover due to lack of overview and anchor links. Additionally the information on common options and environment variables is not accessible offline in man pages, and therefore often overlooked by readers. With this change, each sub-command of nix-store and nix-env gets its own page in the manual (listed in the table of contents), and each own man page. Also, man pages for each subcommand now (again) list common options and environment variables. While this makes each page quite long and some common parameters don't apply, this should still make it easier to navigate as that additional information was not accessible on the command line at all. It is now possible to run 'nix-store --<subcommand> --help` to display help pages for the given subcommand. Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
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Name
nix-store --export - export store paths to a Nix Archive
Synopsis
nix-store --export paths…
Description
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.
{{#include ./opt-common.md}}
{{#include ../opt-common.md}}
{{#include ../env-common.md}}
Examples
To copy a whole closure, do something like:
$ nix-store --export $(nix-store -qR paths) > out
To import the whole closure again, run:
$ nix-store --import < out