modularize DE-related system config

flake.lock

@@ -166,6 +166,49 @@
         "type": "github"
       }
     },
+    "jovian-nixos": {
+      "inputs": {
+        "nix-github-actions": "nix-github-actions",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1761376732,
+        "narHash": "sha256-wavx9gROyuRZKSvPCCBh78gOur7o88ndRi545njNRrM=",
+        "owner": "Jovian-Experiments",
+        "repo": "Jovian-NixOS",
+        "rev": "8bef482d65425d0cff6b20c11a5f054f85569a38",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Jovian-Experiments",
+        "repo": "Jovian-NixOS",
+        "type": "github"
+      }
+    },
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "jovian-nixos",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1729697500,
+        "narHash": "sha256-VFTWrbzDlZyFHHb1AlKRiD/qqCJIripXKiCSFS8fAOY=",
+        "owner": "zhaofengli",
+        "repo": "nix-github-actions",
+        "rev": "e418aeb728b6aa5ca8c5c71974e7159c2df1d8cf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "zhaofengli",
+        "ref": "matrix-name",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1761166759,
@@ -250,6 +293,7 @@
         "disko": "disko",
         "firefox-addons": "firefox-addons",
         "home-manager": "home-manager",
+        "jovian-nixos": "jovian-nixos",
         "nixpkgs": "nixpkgs_2",
         "nixvim": "nixvim"
       }