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# Installation

This section describes how to install and configure Nix for first-time use.

The current recommended option on Linux and MacOS is multi-user.

## Multi-user

This installation offers better sharing, improved isolation, and more security over a single user installation.

This option requires either:

- Linux running systemd, with SELinux disabled
- MacOS

> Updating to macOS 15 Sequoia

> If you recently updated to macOS 15 Sequoia and are getting

>     error: the user '_nixbld1' in the group 'nixbld' does not exist

> when running Nix commands, refer to GitHub issue NixOS/nix#10892 for instructions to fix your installation without reinstalling.

    $ curl -L https://nixos.org/nix/install | sh -s -- --daemon

## Single-user

> Single-user is not supported on Mac.

> `warning: installing Nix as root is not supported by this script!`

This installation has less requirements than the multi-user install, however it cannot offer equivalent sharing, isolation, or security.

This option is suitable for systems without systemd.

    $ curl -L https://nixos.org/nix/install | sh -s -- --no-daemon

## Distributions

The Nix community maintains installers for several distributions.

They can be found in the `nix-community/nix-installers` repository.