nix3-store-copy-sigs(1)

    Warning
    This program is experimental and its interface is subject to change.

Name

nix store copy-sigs - copy store path signatures from substituters

Synopsis

nix store copy-sigs [option…] installables…

Examples

•   To copy signatures from a binary cache to the local store:

    # nix store copy-sigs --substituter https://cache.nixos.org \
      --recursive /nix/store/q833p12cmm9qknyp1walqih941msnb9z-hello-2.12.1

•   To copy signatures from one binary cache to another:

    # nix store copy-sigs --substituter https://cache.nixos.org \
      --store file:///tmp/binary-cache \
      --recursive -v \
      /nix/store/q833p12cmm9qknyp1walqih941msnb9z-hello-2.12.1
    imported 2 signatures

Description

nix store copy-sigs copies store path signatures from one store to another.

It is not advised to copy signatures to binary cache stores. Binary cache signatures are stored in .narinfo files. Since these are cached aggressively, clients may not see the new signatures quickly. It is therefore better to set any required signatures when the paths are first uploaded to the binary cache.

Store paths are processed in parallel. The amount of parallelism is controlled by the http-connections settings.

Options

•   --stdin

    Read installables from the standard input. No default installable applied.

•   --substituter / -s store-uri

    Copy signatures from the specified store.

  Common evaluation options

•   --arg name expr

    Pass the value expr as the argument name to Nix functions.

•   --arg-from-file name path

    Pass the contents of file path as the argument name to Nix functions.

•   --arg-from-stdin name

    Pass the contents of stdin as the argument name to Nix functions.

•   --argstr name string

    Pass the string string as the argument name to Nix functions.

•   --debugger

    Start an interactive environment if evaluation fails.

•   --eval-store store-url

    The URL of the Nix store to use for evaluation, i.e. to store derivations (.drv files) and inputs referenced by them.

•   --impure

    Allow access to mutable paths and repositories.

•   --include / -I path

    Add path to search path entries used to resolve lookup paths

    This option may be given multiple times.

    Paths added through -I take precedence over the nix-path configuration setting and the NIX_PATH environment variable.

•   --override-flake original-ref resolved-ref

    Override the flake registries, redirecting original-ref to resolved-ref.

  Common flake-related options

•   --commit-lock-file

    Commit changes to the flake’s lock file.

•   --inputs-from flake-url

    Use the inputs of the specified flake as registry entries.

•   --no-registries

    Don’t allow lookups in the flake registries.

        DEPRECATED

        Use --no-use-registries instead.

•   --no-update-lock-file

    Do not allow any updates to the flake’s lock file.

•   --no-write-lock-file

    Do not write the flake’s newly generated lock file.

•   --output-lock-file flake-lock-path

    Write the given lock file instead of flake.lock within the top-level flake.

•   --override-input input-path flake-url

    Override a specific flake input (e.g. dwarffs/nixpkgs). The input path must not be empty. This implies --no-write-lock-file.

•   --recreate-lock-file

    Recreate the flake’s lock file from scratch.

        DEPRECATED

        Use nix flake update instead.

•   --reference-lock-file flake-lock-path

    Read the given lock file instead of flake.lock within the top-level flake.

•   --update-input input-path

    Update a specific flake input (ignoring its previous entry in the lock file).

        DEPRECATED

        Use nix flake update instead.

  Logging-related options

•   --debug

    Set the logging verbosity level to ‘debug’.

•   --log-format format

    Set the format of log output; one of raw, internal-json, bar or bar-with-logs.

•   --print-build-logs / -L

    Print full build logs on standard error.

•   --quiet

    Decrease the logging verbosity level.

•   --verbose / -v

    Increase the logging verbosity level.

  Miscellaneous global options

•   --help

    Show usage information.

•   --offline

    Disable substituters and consider all previously downloaded files up-to-date.

•   --option name value

    Set the Nix configuration setting name to value (overriding nix.conf).

•   --refresh

    Consider all previously downloaded files out-of-date.

•   --repair

    During evaluation, rewrite missing or corrupted files in the Nix store. During building, rebuild missing or corrupted store paths.

•   --version

    Show version information.

  Options that change the interpretation of installables

•   --all

    Apply the operation to every store path.

•   --derivation

    Operate on the store derivation rather than its outputs.

•   --expr expr

    Interpret installables as attribute paths relative to the Nix expression expr.

•   --file / -f file

    Interpret installables as attribute paths relative to the Nix expression stored in file. If file is the character -, then a Nix expression is read from standard input. Implies --impure.

•   --recursive / -r

    Apply operation to closure of the specified paths.

    Note

    See man nix.conf for overriding configuration settings with command line flags.