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


nix nar ls - show information about a path inside a NAR file


nix nar ls [option...] nar path


  • To list a specific file in a NAR:

    # nix nar ls --long ./hello.nar /bin/hello
    -r-xr-xr-x                38184 hello
  • To recursively list the contents of a directory inside a NAR, in JSON format:

    # nix nar ls --json --recursive ./hello.nar /bin


This command shows information about a path inside NAR file nar.


  • --directory / -d Show directories rather than their contents.

  • --json Produce output in JSON format, suitable for consumption by another program.

  • --long / -l Show detailed file information.

  • --recursive / -R List subdirectories recursively.

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  • --refresh Consider all previously downloaded files out-of-date.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.

Options to override configuration settings: