chore: small audit cleanups (#357)

Remove a dead .gitattributes rule, bump the mirror workflow's checkout,
document the daemon test settings, drop unused JACK, and align the
installer's disko version.

.gitattributes

@@ -1,3 +0,0 @@
-# https://github.com/github-linguist/linguist/blob/master/docs/overrides.md
-
-home/linux/desktop/i3/conf/polybar/** linguist-vendored

.github/workflows/mirror_to_gitee.yml

@@ -10,7 +10,7 @@ jobs:
   mirror:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 

modules/nixos/base/nix.nix

@@ -22,9 +22,11 @@
   nix.settings = {
     auto-optimise-store = true;
 
+    # Required to run nixpkgs' systemd-nspawn based NixOS tests locally (used
+    # by the nixpkgs-review workflow). These are daemon-wide settings, so every
+    # local build pays the small uid/cgroup allocation overhead; drop them if
+    # you stop running those tests.
     # Reference: https://github.com/NixOS/nixpkgs/pull/478109
-    # NixOS tests using systemd-nspawn containers require the Nix daemon to be
-    # configured with the following settings:
     auto-allocate-uids = true;
     extra-system-features = [ "uid-range" ];
     experimental-features = [

modules/nixos/desktop/peripherals.nix

@@ -18,8 +18,6 @@
     alsa.enable = true;
     alsa.support32Bit = true;
     pulse.enable = true;
-    # If you want to use JACK applications, uncomment this
-    jack.enable = true;
     wireplumber.enable = true;
   };
   # rtkit is optional but recommended

nixos-installer/flake.nix

@@ -4,7 +4,7 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     preservation.url = "github:nix-community/preservation";
-    disko.url = "github:nix-community/disko/v1.11.0";
+    disko.url = "github:nix-community/disko/v1.13.0";
     disko.inputs.nixpkgs.follows = "nixpkgs";
 
     nixos-apple-silicon = {