bryan/nix-configs
1
0
Fork 0
Code Issues Pull requests 2 Projects Releases Packages Wiki Activity

migrate inix to nix-darwin on x86_64-darwin #6

Open
bryan wants to merge 6 commits from inix-darwin-migration into main
pull from: inix-darwin-migration
merge into: bryan:main
Conversation 0 Commits 6 Files changed 8 +107 -309
bryan commented 2026-04-30 16:11:06 +00:00
Owner
Copy link

Summary

Migrate inix (2017 iMac Pro) from NixOS to nix-darwin on x86_64-darwin. NixOS on this hardware proved painful (Broadcom WiFi firmware, AMD Vega, T2) — going back to macOS with Nix on top, modeled after mbp.nix but scoped to a garage-machine workload.

Changes

  • New darwinConfigurations.inix on x86_64-darwin (only Intel Mac in the flake)
  • x86_64-darwin added to flake systems
  • nixosConfigurations.inix and hardware-configs/inix.nix removed
  • modules/hosts/inix.nix rewritten as a darwin module: imports fonts, nix-settings, zsh, homebrew, editors, git, cli-tools, activation, syncthing. Brews: pinentry-mac, syncthing. Casks: slack, vlc, zen. (obsidian and vivaldi come from the base homebrew module; zen is host-level on mbp/studio so it's also host-level here.)
  • modules/services/syncthing.nix refactored to use ${config.homebrew.prefix}/bin/syncthing instead of hardcoded /opt/homebrew/bin so it works on both Apple Silicon (/opt/homebrew/bin) and Intel (/usr/local/bin)
  • README.md Prerequisites split — Apple Silicon Macs use Determinate; Intel Mac (inix) uses the upstream installer (curl -L https://nixos.org/nix/install | sh) because Determinate lists x86_64-darwin as unsupported
  • Other docs (AGENTS.md, modules/README.md) updated for the host-count + brewPrefix guidance

Validation

$ nix eval --no-warn-dirty .#darwinConfigurations.inix.config.homebrew.prefix --raw
/usr/local

$ nix eval --no-warn-dirty .#darwinConfigurations.inix.system.outPath --raw
/nix/store/7pimf07rs1232szmwvsaf4zj2k2xrvqj-darwin-system-26.05.06648f4

Re-evaluated mbp, a6mbp, studio after the syncthing refactor — all still produce valid system paths and homebrew.prefix resolves to /opt/homebrew. gnarbox NixOS config still evals (stateVersion = "25.05").

Note: x86_64-darwin sunset

Per the nixpkgs 26.05 release notes: 26.05 is the last release to support x86_64-darwin. Nixpkgs maintains the platform with binary builds until 26.05 goes out of support at the end of 2026. From 26.11 onward (Nov 2026), no packages will be built for x86_64-darwin and source builds will not be supported.

We're tracking unstable on inix today for parity with the other Macs. A scheduled routine (trig_01KH42sj6qQeHnnhLFKkbgvi, fires 2026-06-08) will open a follow-up PR pinning inix to nixos-26.05 once that branch is cut. Note: that follow-up PR will land on the GitHub mirror (https://github.com/bryan-thompsoncodes/nix-configs), not Forgejo, since the cloud-hosted scheduled agent has gh auth but no Forgejo token.

Test plan

  • On the iMac: install Nix via the upstream installer (curl -L https://nixos.org/nix/install | sh) — Determinate doesn't support x86_64-darwin
  • Bootstrap nix-darwin: sudo nix run nix-darwin/master#darwin-rebuild -- switch --flake '.#inix'
  • Verify which brew returns /usr/local/bin/brew (not /opt/homebrew/bin/brew)
  • Verify Slack, VLC, Zen Browser, Obsidian, Vivaldi launch
  • Confirm syncthing connects to existing devices (web UI at http://127.0.0.1:8384)
## Summary Migrate `inix` (2017 iMac Pro) from NixOS to nix-darwin on `x86_64-darwin`. NixOS on this hardware proved painful (Broadcom WiFi firmware, AMD Vega, T2) — going back to macOS with Nix on top, modeled after [mbp.nix](modules/hosts/mbp.nix) but scoped to a garage-machine workload. ## Changes - **New `darwinConfigurations.inix`** on `x86_64-darwin` (only Intel Mac in the flake) - **`x86_64-darwin` added to flake `systems`** - **`nixosConfigurations.inix` and `hardware-configs/inix.nix` removed** - **`modules/hosts/inix.nix`** rewritten as a darwin module: imports `fonts`, `nix-settings`, `zsh`, `homebrew`, `editors`, `git`, `cli-tools`, `activation`, `syncthing`. Brews: `pinentry-mac`, `syncthing`. Casks: `slack`, `vlc`, `zen`. (`obsidian` and `vivaldi` come from the base homebrew module; `zen` is host-level on mbp/studio so it's also host-level here.) - **`modules/services/syncthing.nix`** refactored to use `${config.homebrew.prefix}/bin/syncthing` instead of hardcoded `/opt/homebrew/bin` so it works on both Apple Silicon (`/opt/homebrew/bin`) and Intel (`/usr/local/bin`) - **`README.md` Prerequisites** split — Apple Silicon Macs use Determinate; Intel Mac (inix) uses the upstream installer (`curl -L https://nixos.org/nix/install | sh`) because Determinate lists `x86_64-darwin` as unsupported - **Other docs** (`AGENTS.md`, `modules/README.md`) updated for the host-count + brewPrefix guidance ## Validation ``` $ nix eval --no-warn-dirty .#darwinConfigurations.inix.config.homebrew.prefix --raw /usr/local $ nix eval --no-warn-dirty .#darwinConfigurations.inix.system.outPath --raw /nix/store/7pimf07rs1232szmwvsaf4zj2k2xrvqj-darwin-system-26.05.06648f4 ``` Re-evaluated `mbp`, `a6mbp`, `studio` after the syncthing refactor — all still produce valid system paths and `homebrew.prefix` resolves to `/opt/homebrew`. `gnarbox` NixOS config still evals (`stateVersion = "25.05"`). ## Note: x86_64-darwin sunset Per the [nixpkgs 26.05 release notes](https://nixos.org/manual/nixpkgs/unstable/release-notes#x86_64-darwin-26.05): 26.05 is the last release to support `x86_64-darwin`. Nixpkgs maintains the platform with binary builds **until 26.05 goes out of support at the end of 2026**. From 26.11 onward (Nov 2026), no packages will be built for `x86_64-darwin` and source builds will not be supported. We're tracking unstable on inix today for parity with the other Macs. A scheduled routine (`trig_01KH42sj6qQeHnnhLFKkbgvi`, fires 2026-06-08) will open a follow-up PR pinning `inix` to `nixos-26.05` once that branch is cut. *Note: that follow-up PR will land on the GitHub mirror (https://github.com/bryan-thompsoncodes/nix-configs), not Forgejo, since the cloud-hosted scheduled agent has gh auth but no Forgejo token.* ## Test plan - [ ] On the iMac: install Nix via the **upstream installer** (`curl -L https://nixos.org/nix/install | sh`) — Determinate doesn't support `x86_64-darwin` - [ ] Bootstrap nix-darwin: `sudo nix run nix-darwin/master#darwin-rebuild -- switch --flake '.#inix'` - [ ] Verify `which brew` returns `/usr/local/bin/brew` (not `/opt/homebrew/bin/brew`) - [ ] Verify Slack, VLC, Zen Browser, Obsidian, Vivaldi launch - [ ] Confirm syncthing connects to existing devices (web UI at http://127.0.0.1:8384) 
Refactor services/syncthing.nix to use config.homebrew.prefix for cross-arch.
This pull request can be merged automatically.
You are not authorized to merge this pull request.
View command line instructions

Checkout

From your project repository, check out a new branch and test the changes.
git fetch -u origin inix-darwin-migration:inix-darwin-migration
git switch inix-darwin-migration

Merge

Merge the changes and update on Forgejo.

Warning: The "Autodetect manual merge" setting is not enabled for this repository, you will have to mark this pull request as manually merged afterwards.

git switch main
git merge --no-ff inix-darwin-migration
git switch inix-darwin-migration
git rebase main
git switch main
git merge --ff-only inix-darwin-migration
git switch inix-darwin-migration
git rebase main
git switch main
git merge --no-ff inix-darwin-migration
git switch main
git merge --squash inix-darwin-migration
git switch main
git merge --ff-only inix-darwin-migration
git switch main
git merge inix-darwin-migration
git push origin main
Sign in to join this conversation.
Reviewers
No reviewers
Labels
Clear labels
No items
No labels
Milestone
Clear milestone
No items
No milestone
Projects
Clear projects
No items
No project
Assignees
Clear assignees
No assignees
1 participant
Notifications
Due date
The due date is invalid or out of range. Please use the format "yyyy-mm-dd".

No due date set.

Dependencies

No dependencies set.

Reference
bryan/nix-configs!6
No description provided.