nix3-nar - Man Page

create or inspect NAR files

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

Synopsis

nix nar [option…] subcommand

where subcommand is one of the following:

nix nar cat - print the contents of a file inside a NAR file on stdout
nix nar dump-path - serialise a path to stdout in NAR format
nix nar ls - show information about a path inside a NAR file
nix nar pack - serialise a path to stdout in NAR format

Description

nix nar provides several subcommands for creating and inspecting Nix Archives (NARs) .

File format

For the definition of the Nix Archive file format, see within the protocols chapter of the manual.

Options

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Consider all previously downloaded files out-of-date.
--version
Show version information.
Note
See man nix.conf for overriding configuration settings with command line flags.