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 Nix Archive (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.

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    Consider all previously downloaded files out-of-date.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


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