flake: add 'nixgl'

There's now a home-manager module for it, let's try it out.

flake.lock

@@ -150,6 +150,30 @@
         "type": "github"
       }
     },
+    "nixgl": {
+      "inputs": {
+        "flake-utils": [
+          "futils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1713543440,
+        "narHash": "sha256-lnzZQYG0+EXl/6NkGpyIz+FEOc/DSEG57AP1VsdeNrM=",
+        "owner": "nix-community",
+        "repo": "nixGL",
+        "rev": "310f8e49a149e4c9ea52f1adf70cdc768ec53f8a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "main",
+        "repo": "nixGL",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1730200266,
@@ -214,6 +238,7 @@
         "flake-parts": "flake-parts",
         "futils": "futils",
         "home-manager": "home-manager",
+        "nixgl": "nixgl",
         "nixpkgs": "nixpkgs",
         "nur": "nur",
         "pre-commit-hooks": "pre-commit-hooks",

flake.nix

@@ -43,6 +43,17 @@
       };
     };
 
+    nixgl = {
+      type = "github";
+      owner = "nix-community";
+      repo = "nixGL";
+      ref = "main";
+      inputs = {
+        flake-utils.follows = "futils";
+        nixpkgs.follows = "nixpkgs";
+      };
+    };
+
     nixpkgs = {
       type = "github";
       owner = "NixOS";