Warning
This program is experimental ⟨@docroot@/development/experimental-features.md#xp-feature-nix-command⟩ and its interface is subject to change.
Name
nix nar - create or inspect NAR files
Synopsis
nix nar [option…] subcommand
where subcommand is one of the following:
- •
-
nix nar cat⟨./nix3-nar-cat.md⟩ - print the contents of a file inside a NAR file on stdout
- •
-
nix nar dump-path⟨./nix3-nar-dump-path.md⟩ - serialise a path to stdout in NAR format
- •
-
nix nar ls⟨./nix3-nar-ls.md⟩ - show information about a path inside a NAR file
- •
-
nix nar pack⟨./nix3-nar-pack.md⟩ - serialise a path to stdout in NAR format
Description
nix nar provides several subcommands for creating and inspecting Nix Archives (NARs) ⟨@docroot@/store/file-system-object/content-address.md#serial-nix-archive⟩\c .
File format
For the definition of the Nix Archive file format, see within the protocols chapter ⟨@docroot@/protocols/nix-archive.md⟩ of the manual.
Options
Logging-related options
- •
-
--debug⟨#opt-debug⟩
-
Set the logging verbosity level to ‘debug’.
- •
-
--log-format⟨#opt-log-format⟩ format
-
Set the format of log output; one of
raw,internal-json,barorbar-with-logs.
- •
-
--print-build-logs⟨#opt-print-build-logs⟩ /-L
-
Print full build logs on standard error.
- •
-
--quiet⟨#opt-quiet⟩
-
Decrease the logging verbosity level.
- •
-
--verbose⟨#opt-verbose⟩ /-v
-
Increase the logging verbosity level.
Miscellaneous global options
- •
-
--help⟨#opt-help⟩
-
Show usage information.
- •
-
--offline⟨#opt-offline⟩
-
Disable substituters and consider all previously downloaded files up-to-date.
- •
-
--option⟨#opt-option⟩ name value
-
Set the Nix configuration setting name to value (overriding
nix.conf).
- •
-
--refresh⟨#opt-refresh⟩
-
Consider all previously downloaded files out-of-date.
- •
-
--version⟨#opt-version⟩
-
Show version information.
Note
See
man nix.conf⟨@docroot@/command-ref/conf-file.md#command-line-flags⟩ for overriding configuration settings with command line flags.