macOS

Nix is supported on macOS.

Darwin support in nixpkgs

macOS support in nixpkgs is not of same quality and priority as Linux. See https://github.com/NixOS/nixpkgs/issues/145230 & https://github.com/NixOS/nixpkgs/issues/116341

Links to this page

services-flake

services-flake provides declarative, composable, and reproducible services for Nix development environment, and is based on flake-parts. Enabling users to have NixOS-like service on macOS and Linux.
nix-darwin

nix-darwin brings NixOS like configuration to macOS, allowing you to install packages (among doing other things) purely through Nix.
Why Choose Nix for develoment?

Multi-Platform Support: The same configuration reliably works across macOS, Linux, and WSL.

[!note] macOS support While macOS doesn’t enjoy first-class support in nixpkgs yet, improvements are underway.
Topics

macOS
Rust FFI in Haskell

[!note] macOS caveat If you are on macOS, the Haskell package will not run because dlopen will be looking for the .dylib file in the temporary build directory (/private/tmp/nix-build-rust-nix...). To fix this, you need to include fixDarwinDylibNames in flake.nix:
Nix is broken after macOS upgrade

Upgrading macOS is known to break Nix. When this happens, just uninstall Nix and then install it again.
Install Nix

home-manager (and nix-darwin if you are on macOS) if you would like to use Nix for more than packages and devShells.

[!info] Linux If you prefer to use Linux, you may be interested in installing NixOS. The following instructions are for users of other Linux distros as well as macOS.

[!tip] Graphical installer for macOS The unofficial installer is also available as a graphical installer for macOS. You can get get it here.
Getting Started with Nix for Haskell & Rust

Sridhar Ratnakumar will demonstrate the delights of using Nix to develop Rust as well as Haskell projects without needing to do any manual global setup on your system. We’ll start from a pristine macOS machine as well as a pristine Linux machine to get our development environment up and running in no time, all the way up to LSP support in VSCode
First steps with Nix

If you want to manage your system using Nix, see home-manager Tutorial Series (if you are on macOS or non-NixOS Linux) or NixOS Tutorial Series (if you are on NixOS).