nix3-store-verify - (unknown subject)

Name  Synopsis  Examples  Description  Exit status  Options  Common evaluation options  Common flake-related options  Logging-related options  Miscellaneous global options  Options that change the interpretation of installables 

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

Name

nix store verify - verify the integrity of store paths

Synopsis

nix store verify [option…] installables…

Examples

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Verify the entire Nix store:

# nix store verify --all

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Check whether each path in the closure of Firefox has at least 2 signatures:

# nix store verify --recursive --sigs-needed 2 --no-contents $(type -p firefox)

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Verify a store path in the binary cache https://cache.nixos.org/:

# nix store verify --store https://cache.nixos.org/ \
/nix/store/v5sv61sszx301i0x6xysaqzla09nksnd-hello-2.10

Description

This command verifies the integrity of the store paths installables, or, if --all is given, the entire Nix store. For each path, it checks that

	•		its contents match the NAR hash recorded in the Nix database; and
	•		it is trusted, that is, it is signed by at least one trusted signing key, is content-addressed, or is built locally (“ultimately trusted”).

Exit status

The exit status of this command is the sum of the following values:

	•		1 if any path is corrupted (i.e. its contents don’t match the recorded NAR hash).
	•		2 if any path is untrusted.
	•		4 if any path couldn’t be verified for any other reason (such as an I/O error).

Options

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--no-contents

Do not verify the contents of each store path.

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--no-trust

Do not verify whether each store path is trusted.

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--sigs-needed / -n n

Require that each path is signed by at least n different keys.

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--stdin

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

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--substituter / -s store-uri

Use signatures from the specified store.

Common evaluation options

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--arg name expr

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

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--arg-from-file name path

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

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--arg-from-stdin name

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

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--argstr name string

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

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--debugger

Start an interactive environment if evaluation fails.

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--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.

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--impure

Allow access to mutable paths and repositories.

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--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.

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--override-flake original-ref resolved-ref

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

Common flake-related options

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--commit-lock-file

Commit changes to the flake’s lock file.

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--inputs-from flake-url

Use the inputs of the specified flake as registry entries.

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--no-registries

Don’t allow lookups in the flake registries.

DEPRECATED

Use --no-use-registries instead.

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--no-update-lock-file

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

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--no-write-lock-file

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

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

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

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--override-input input-path flake-url

Override a specific flake input (e.g. dwarffs/nixpkgs). This implies --no-write-lock-file.

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--recreate-lock-file

Recreate the flake’s lock file from scratch.

DEPRECATED

Use nix flake update instead.

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

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

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--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

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--debug

Set the logging verbosity level to ‘debug’.

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--log-format format

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

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--print-build-logs / -L

Print full build logs on standard error.

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--quiet

Decrease the logging verbosity level.

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--verbose / -v

Increase the logging verbosity level.

Miscellaneous global options

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--help

Show usage information.

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--offline

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

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--option name value

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

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--refresh

Consider all previously downloaded files out-of-date.

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--repair

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

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--version

Show version information.

Options that change the interpretation of installables

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--all

Apply the operation to every store path.

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--derivation

Operate on the store derivation rather than its outputs.

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--expr expr

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

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--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.

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--recursive / -r

Apply operation to closure of the specified paths.

Note

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

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