# Installing a Binary Distribution

> **Updating to macOS 15 Sequoia**
>
> If you recently updated to macOS 15 Sequoia and are getting
> ```console
> error: the user '_nixbld1' in the group 'nixbld' does not exist
> ```
> when running Nix commands, refer to GitHub issue [NixOS/nix#10892](https://github.com/NixOS/nix/issues/10892) for instructions to fix your installation without reinstalling.

To install the latest version Nix, run the following command:

```console
$ curl -L https://nixos.org/nix/install | sh
```

This performs the default type of installation for your platform:

- [Multi-user](#multi-user-installation):
  - Linux with systemd and without SELinux
  - macOS
- [Single-user](#single-user-installation):
  - Linux without systemd
  - Linux with SELinux

We recommend the multi-user installation if it supports your platform and you can authenticate with `sudo`.

The installer can configured with various command line arguments and environment variables.
To show available command line flags:

```console
$ curl -L https://nixos.org/nix/install | sh -s -- --help
```

To check what it does and how it can be customised further, [download and edit the second-stage installation script](#installing-from-a-binary-tarball).

# Installing a pinned Nix version from a URL

Version-specific installation URLs for all Nix versions since 1.11.16 can be found at [releases.nixos.org](https://releases.nixos.org/?prefix=nix/).
The directory for each version contains the corresponding SHA-256 hash.

All installation scripts are invoked the same way:

```console
$ export VERSION=2.19.2 
$ curl -L https://releases.nixos.org/nix/nix-$VERSION/install | sh
```

# Multi User Installation

The multi-user Nix installation creates system users and a system service for the Nix daemon.

Supported systems:

- Linux running systemd, with SELinux disabled
- macOS

To explicitly instruct the installer to perform a multi-user installation on your system:

```console
$ bash <(curl -L https://nixos.org/nix/install) --daemon
```

You can run this under your usual user account or `root`.
The script will invoke `sudo` as needed.

# Single User Installation

To explicitly select a single-user installation on your system:

```console
$ bash <(curl -L https://nixos.org/nix/install) --no-daemon
```

In a single-user installation, `/nix` is owned by the invoking user.
The script will invoke `sudo` to create `/nix` if it doesn’t already exist.
If you don’t have `sudo`, manually create `/nix` as `root`:

```console
$ su root
# mkdir /nix
# chown alice /nix
```

# Installing from a binary tarball

You can also download a binary tarball that contains Nix and all its dependencies:
- Choose a [version](https://releases.nixos.org/?prefix=nix/) and [system type](../development/building.md#platforms)
- Download and unpack the tarball
- Run the installer

> **Example**
>
> ```console
> $ pushd $(mktemp -d)