Manpages - nix3-registry-pin.1

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

#+end_quote

Name

nix registry pin - pin a flake to its current version or to the current version of a flake URL

Synopsis

nix registry pin [/option/…] url locked

Examples

Pin nixpkgs to its most recent Git revision:

# nix registry pin nixpkgs

Afterwards the user registry will have an entry like this:

nix registry list | grep '^user '
user   flake:nixpkgs github:NixOS/nixpkgs/925b70cd964ceaedee26fde9b19cc4c4f081196a

and nix flake metadata will say:

# nix flake metadata nixpkgs
Resolved URL:  github:NixOS/nixpkgs/925b70cd964ceaedee26fde9b19cc4c4f081196a
Locked URL:    github:NixOS/nixpkgs/925b70cd964ceaedee26fde9b19cc4c4f081196a
…

Pin nixpkgs in a custom registry to its most recent Git revision:

# nix registry pin --registry ./custom-flake-registry.json nixpkgs

Description

This command adds an entry to the user registry that maps flake reference url to the corresponding locked flake reference, that is, a flake reference that specifies an exact revision or content hash. This ensures that until this registry entry is removed, all uses of url will resolve to exactly the same flake.

Entries can be removed using nix registry remove.

Options

--registry registry The registry to operate on.

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.

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