nix3-upgrade-nix(1)         General Commands Manual        nix3-upgrade-nix(1)


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

Name
       nix upgrade-nix - upgrade Nix to the latest stable version

Synopsis
       nix upgrade-nix [option<?>]

Examples
       o  Upgrade Nix to the stable version declared in Nixpkgs:

       # nix upgrade-nix

       o  Upgrade Nix in a specific profile:

       # nix upgrade-nix --profile ~alice/.local/state/nix/profiles/profile

Description
       This command upgrades Nix to the stable version.

       By default, the latest stable version is defined by Nixpkgs, in nix-
       fallback-paths.nix and updated manually. It may not always be the
       latest tagged release.

       By default, it locates the directory containing the nix binary in the
       $PATH environment variable. If that directory is a Nix profile, it will
       upgrade the nix package in that profile to the latest stable binary
       release.

       You cannot use this command to upgrade Nix in the system profile of a
       NixOS system (that is, if nix is found in /run/current-system).

Options
       o  --dry-run

          Show what this command would do without doing it.

       o  --nix-store-paths-url url

          The URL of the file that contains the store paths of the latest Nix
          release.

       o  --profile / -p profile-dir

          The path to the Nix profile to upgrade.

   Logging-related options
       o  --debug

          Set the logging verbosity level to `debug'.

       o  --log-format format

          Set the format of log output; one of raw, internal-json, bar or bar-
          with-logs.

       o  --print-build-logs / -L

          Print full build logs on standard error.

       o  --quiet

          Decrease the logging verbosity level.

       o  --verbose / -v

          Increase the logging verbosity level.

   Miscellaneous global options
       o  --help

          Show usage information.

       o  --offline

          Disable substituters and consider all previously downloaded files
          up-to-date.

       o  --option name value

          Set the Nix configuration setting name to value (overriding
          nix.conf).

       o  --refresh

          Consider all previously downloaded files out-of-date.

       o  --version

          Show version information.

          Note

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

                                                           nix3-upgrade-nix(1)