Manpages - nix3-upgrade-nix.1

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

#+end_quote

Name

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

Synopsis

nix upgrade-nix [/option/…]

Examples

Upgrade Nix to the stable version declared in Nixpkgs:

# nix upgrade-nix

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

--dry-run Show what this command would do without doing it.
--nix-store-paths-url url The URL of the file that contains the store paths of the latest Nix release.
--profile / -p profile-dir The path to the Nix profile to upgrade.

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--refresh Consider all previously downloaded files out-of-date.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