nix-configuration

A quasi-complete system-wide configuration of most of my machines and tools using nix. It works on both macOS and NixOS (and should work on non-NixOS linux systems, though I have not attempted it since I have migrated all my linux machines to NixOS).

---

installing

macOS

1. install nix

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

2. install nix-darwin

   nix-build https://github.com/LnL7/nix-darwin/archive/master.tar.gz -A installer
   ./result/bin/darwin-installermore-or-less 

outputs.darwinConfigurations is an attribute set where the key is a specific machine (name should equal its hostname, AFAIK). If any new macOS machine is being configured, it needs an entry in this set.

3. bootstrap the flake from this repository

   # where:
   # REPO_ROOT is the root of the local clone of this repo
   
   nix build ${REPO_ROOT}\#darwinConfigurations.$(hostname).system
   ./result/sw/bin/darwin-rebuild switch --flake $REPO_ROOT

NixOS

outputs.nixosConfigurations is an attribute set where the key is a specific machine (name should equal its hostname, AFAIK). If any new NixOS machine is being configured, it needs an entry in this set.

1. activate the flake

   # where:
   # REPO_ROOT is the root of the local clone of this repo
   
   sudo nixos-rebuild switch --flake ${REPO_ROOT}

---

updating

The following commands should be run from the local clone's dir.

macOS

1. update the flake inputs

   nix flake update

2. apply the updates

   # optional step to check the config before applying
   darwin-rebuild check --flake ${REPO_ROOT}
   # apply the config
   darwin-rebuild switch --flake ${REPO_ROOT}

NixOS

1. update the flake inputs

   nix flake update

2. apply the updates

   NOTE: if any new files (i.e., not yet tracked via git) are referenced from within the config, they need to be added via git before the following commands.

   # optional step to check the config before applying
   darwin-rebuild check --flake ${REPO_ROOT}
   # apply the config
   darwin-rebuild switch --flake ${REPO_ROOT}