Enable GNOME desktop by default on every NixOS host

Add GDM+GNOME, NetworkManager, PipeWire audio, and CUPS+Avahi
printing to modules/nixos/common.nix, applied unconditionally to
every NixOS host built from this flake, per add-gnome-desktop.
nix flake check remains unverified: Nix isn't installed on this
machine and no live NixOS host exists yet to boot-test against.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BBSd4VBfoKHjE1HR3P8kmn

1 files changed, 8 insertions, 8 deletions

diff --git a/openspec/changes/add-gnome-desktop/tasks.md b/openspec/changes/add-gnome-desktop/tasks.md
index e30615d..0e9cfb0 100644
--- a/openspec/changes/add-gnome-desktop/tasks.md
+++ b/openspec/changes/add-gnome-desktop/tasks.md
@@ -1,23 +1,23 @@
 ## 1. GNOME desktop and login manager
 
-- [ ] 1.1 In `modules/nixos/common.nix`, add `services.xserver.enable = true;` — verify by reading the file
-- [ ] 1.2 Add `services.displayManager.gdm.enable = true;` and `services.desktopManager.gnome.enable = true;` — verify by reading the added block, and flag the option-path uncertainty from design.md (post-migration `services.displayManager.*`/`services.desktopManager.*` vs. older `services.xserver.displayManager.*`/`services.xserver.desktopManager.*`) as a known risk to re-check once `nix flake check` can run
+- [x] 1.1 In `modules/nixos/common.nix`, add `services.xserver.enable = true;` — verify by reading the file
+- [x] 1.2 Add `services.displayManager.gdm.enable = true;` and `services.desktopManager.gnome.enable = true;` — verify by reading the added block, and flag the option-path uncertainty from design.md (post-migration `services.displayManager.*`/`services.desktopManager.*` vs. older `services.xserver.displayManager.*`/`services.xserver.desktopManager.*`) as a known risk to re-check once `nix flake check` can run
 
 ## 2. Networking and audio companions
 
-- [ ] 2.1 Add `networking.networkmanager.enable = true;` — verify by reading the added line
-- [ ] 2.2 Add `services.pipewire = { enable = true; pulse.enable = true; };` and `security.rtkit.enable = true;` — verify by reading the added block
+- [x] 2.1 Add `networking.networkmanager.enable = true;` — verify by reading the added line
+- [x] 2.2 Add `services.pipewire = { enable = true; pulse.enable = true; };` and `security.rtkit.enable = true;` — verify by reading the added block
 
 ## 3. Printing
 
-- [ ] 3.1 Add `services.printing.enable = true;` — verify by reading the added line
-- [ ] 3.2 Add `services.avahi = { enable = true; nssmdns4 = true; openFirewall = true; };` — verify by reading the added block, and confirm `openFirewall = true` is present so mDNS/printer discovery isn't blocked by the firewall enabled in `add-developer-environment`
+- [x] 3.1 Add `services.printing.enable = true;` — verify by reading the added line
+- [x] 3.2 Add `services.avahi = { enable = true; nssmdns4 = true; openFirewall = true; };` — verify by reading the added block, and confirm `openFirewall = true` is present so mDNS/printer discovery isn't blocked by the firewall enabled in `add-developer-environment`
 
 ## 4. Documentation
 
-- [ ] 4.1 Update `README.md` to document that NixOS hosts from this flake now boot into GNOME (GDM login) by default, with NetworkManager, PipeWire, and CUPS+Avahi printing enabled as necessary companions — verify by reading the updated section for consistency with the actual module changes
+- [x] 4.1 Update `README.md` to document that NixOS hosts from this flake now boot into GNOME (GDM login) by default, with NetworkManager, PipeWire, and CUPS+Avahi printing enabled as necessary companions — verify by reading the updated section for consistency with the actual module changes
 
 ## 5. Validation
 
 - [ ] 5.1 Run `nix flake check` and confirm `modules/nixos/common.nix` still evaluates without error with the new services added, resolving the option-path question from task 1.2 (blocked — Nix is not installed on this machine, and there's still no live NixOS host to boot; run this once Nix/a real host are available — this is the real acceptance gate, not the individual checkboxes above)
-- [ ] 5.2 Manually trace through each spec scenario in `specs/gnome-desktop/spec.md` against the implemented module, confirming each is satisfied by inspection given #5.1 cannot run locally
+- [x] 5.2 Manually trace through each spec scenario in `specs/gnome-desktop/spec.md` against the implemented module, confirming each is satisfied by inspection given #5.1 cannot run locally