feat: add github access token for nix

modules/programs/nix.nix

@@ -44,12 +44,17 @@ in
       nix = config.nix.package;
     };
 
+    age.secrets.nix-github-token.file = ../../secrets/nix-github-token.age;
+
     nix = {
       nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
 
       package = pkgs.nix;
 
-      extraOptions = "experimental-features = nix-command flakes";
+      extraOptions = ''
+        !include ${config.age.secrets.nix-github-token.path}
+        experimental-features = nix-command flakes
+      '';
 
       gc = {
         automatic = cfg.gc.enable;

secrets/nix-github-token.age

@@ -0,0 +1,10 @@
+age-encryption.org/v1
+-> ssh-ed25519 CjuqfA H1gL8k/o7kvJoVEZ0UrbUv1G7Ceb3cUCIVFhch9rDhc
+0531muHlievVhT5piGLXC+/zOymCkPM9P9csRxLsnpM
+-> ssh-ed25519 wG6LYg Z9cm/TUZbV35tzgHywx1AHmF8jrFFqBl3sCIELEvcH0
+OmLY/ThgZ4f8CFFA5YpYFiRK+ro7cBqoFY6UY7/VS8I
+-> ssh-ed25519 ZYd7Zg xpjSILAYRyQ4kkbdLAVJQXChX+t/DeL3qWWJae2sczI
+wamYh70/AGSh5j4uqsPFTvn36E3TmGoVL8XlxbSfX9g
+--- NNsTU7Fsi/WLegSpkuoNaxN0kFQG38mgdhCQ8y+CSQE
+vâî"²úÃF
+‘=‹‰rûazÜ6h<>ÍQâN÷&DpvðGÄXQ$d7tíˆ݈ElÃIèÀXŠãYrV'‚ç×ï)J¬€Hí<48>ɦ Úƒ?fåœÊWÃH_Ô®Ô±‰ª"

secrets/secrets.nix

@@ -28,4 +28,5 @@ in
   "exercism.age".publicKeys = personal;
   "openai.age".publicKeys = personal;
   "anthropic.age".publicKeys = personal;
+  "nix-github-token.age".publicKeys = personal;
 }