flake: Rewrite and update to NixOS 25.11

The flake is quite complex, using bundix to capture Ruby dependencies
with Nix and a custom Ruby via an overlay. This is nice, but overkill
for a simple website. Greatly simplify the flake and update it.

flake.lock

@@ -1,26 +1,5 @@
 {
   "nodes": {
-    "bundix": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1721093334,
-        "narHash": "sha256-5FghZ0HIETbc0TGcBV8uyixq5z4w/9PF5Puhujz3D1o=",
-        "owner": "inscapist",
-        "repo": "bundix",
-        "rev": "42c08846f7e5d91ef121239fd364feaeb22c0bbc",
-        "type": "github"
-      },
-      "original": {
-        "owner": "inscapist",
-        "ref": "main",
-        "repo": "bundix",
-        "type": "github"
-      }
-    },
     "flake-utils": {
       "inputs": {
         "systems": "systems"
@@ -41,46 +20,24 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1748874392,
+        "lastModified": 1768028080,
-        "narHash": "sha256-eQBfZgtcRTdZIcoguK569f7PdjC0KfNcIdHl3QXPesk=",
+        "narHash": "sha256-50aDK+8eLvsLK39TzQhKNq50/HcXyP4hyxOYoPoVxjo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "02718908003315c70867d41621c8829ee16809b6",
+        "rev": "d03088749a110d52a4739348f39a63f84bb0be14",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "release-25.05",
+        "ref": "nixos-25.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "root": {
       "inputs": {
-        "bundix": "bundix",
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs",
+        "nixpkgs": "nixpkgs"
-        "ruby-nix": "ruby-nix"
-      }
-    },
-    "ruby-nix": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1744623277,
-        "narHash": "sha256-0HWA2YD9v71SHyMF11PKnVJcHnrHhRLHDCldlUbzYII=",
-        "owner": "inscapist",
-        "repo": "ruby-nix",
-        "rev": "43964ced23803f49e2d307fbbfd4e03ed23760c0",
-        "type": "github"
-      },
-      "original": {
-        "owner": "inscapist",
-        "repo": "ruby-nix",
-        "type": "github"
       }
     },
     "systems": {

flake.nix

@@ -2,78 +2,26 @@
   description = "The Radicle Website";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/release-25.05";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
     flake-utils.url = "github:numtide/flake-utils";
-    bundix = {
-      url = "github:inscapist/bundix/main";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-    ruby-nix = {
-      url = "github:inscapist/ruby-nix";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
   };
 
   outputs = {
     self,
     nixpkgs,
     flake-utils,
-    bundix,
-    ruby-nix,
     ...
   }:
     flake-utils.lib.eachDefaultSystem (system: let
       pkgs = import nixpkgs {
         inherit system;
-        overlays = [ruby-nix.overlays.ruby];
       };
-      rubyNix = ruby-nix.lib pkgs;
-      bundixcli = bundix.packages.${system}.default;
-
-      deps = with pkgs; [env ruby bundixcli wrangler];
-
-      inherit
-        (rubyNix {
-          name = "seroperson.gitlab.io";
-          gemset = ./gemset.nix;
-          gemConfig = pkgs.defaultGemConfig;
-        })
-        env
-        ruby
-        ;
     in {
-      packages = let
-        bundlecli = pkgs.writeShellApplication {
-          name = "bundle";
-          runtimeInputs = deps;
-          text = ''
-            export BUNDLE_PATH=vendor/bundle
-            bundle "$@"
-          '';
-        };
-        jekyll = pkgs.writeShellApplication {
-          name = "jekyll";
-          runtimeInputs = deps;
-          text = ''
-            if [ $# -eq 0 ]; then
-              jekyll build
-            else
-              jekyll "$@"
-            fi
-          '';
-        };
-      in {
-        jekyll = jekyll;
-        bundle = bundlecli;
-        bundix = bundixcli;
-        default = jekyll;
-      };
-
       devShells.default = pkgs.mkShell {
-        shellHook = ''
+        buildInputs = with pkgs; [
-          export BUNDLE_PATH=vendor/bundle
+          ruby
-        '';
+          wrangler
-        buildInputs = deps;
+        ];
       };
     });
 }