feat(nvim): add mcp-hub, fd, and delta dependencies

- add mcp-hub flake input for MCP integration
- create system-aware dependency overlays
- add mcp-hub, fd, delta to lspsAndRuntimeDeps
- remove duplicate tailwind-fold.lua file

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

dots/.config/nvim/flake.lock

@@ -1,5 +1,45 @@
 {
   "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "mcp-hub",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1743550720,
+        "narHash": "sha256-hIshGgKZCgWh6AYJpJmRgFdR3WUbkY04o82X05xqQiY=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "c621e8422220273271f52058f618c94e405bb0f5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "mcp-hub": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1755841689,
+        "narHash": "sha256-KakvXZf0vjdqzyT+LsAKHEr4GLICGXPmxl1hZ3tI7Yg=",
+        "owner": "ravitemer",
+        "repo": "mcp-hub",
+        "rev": "9c7670a4c341ed3cf738a6242c0fde1cea40bccf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ravitemer",
+        "repo": "mcp-hub",
+        "type": "github"
+      }
+    },
     "nixCats": {
       "locked": {
         "lastModified": 1765766809,
@@ -17,11 +57,27 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1765934234,
+        "lastModified": 1743689281,
-        "narHash": "sha256-pJjWUzNnjbIAMIc5gRFUuKCDQ9S1cuh3b2hKgA7Mc4A=",
+        "narHash": "sha256-y7Hg5lwWhEOgflEHRfzSH96BOt26LaYfrYWzZ+VoVdg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "2bfc080955153be0be56724be6fa5477b4eefabb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1766532406,
+        "narHash": "sha256-acLU/ag9VEoKkzOD202QASX25nG1eArXg5A0mHjKgxM=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "af84f9d270d404c17699522fab95bbf928a2d92f",
+        "rev": "8142186f001295e5a3239f485c8a49bf2de2695a",
         "type": "github"
       },
       "original": {
@@ -146,11 +202,11 @@
     "plugins-tailwind-fold-nvim": {
       "flake": false,
       "locked": {
-        "lastModified": 1752559116,
+        "lastModified": 1766077142,
-        "narHash": "sha256-8uefZIVsn9USEd6FyiO3m3TRKAS/vigU4t9Tk5ijd3c=",
+        "narHash": "sha256-SwcDLlygXUSV/dytPXA5Y45OpUhjnExc8SZg5a8MZ2k=",
         "owner": "razak17",
         "repo": "tailwind-fold.nvim",
-        "rev": "d9e7ca11691d252b35795726dff087bf013b2ebf",
+        "rev": "e2ba5ee1ca9b74208709fe9d7314b8aa753b26a7",
         "type": "github"
       },
       "original": {
@@ -161,8 +217,9 @@
     },
     "root": {
       "inputs": {
+        "mcp-hub": "mcp-hub",
         "nixCats": "nixCats",
-        "nixpkgs": "nixpkgs",
+        "nixpkgs": "nixpkgs_2",
         "plugins-beancount-nvim": "plugins-beancount-nvim",
         "plugins-crazy-node-movement": "plugins-crazy-node-movement",
         "plugins-helm-ls-nvim": "plugins-helm-ls-nvim",

dots/.config/nvim/flake.nix

@@ -2,6 +2,7 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
     nixCats.url = "github:BirdeeHub/nixCats-nvim";
+    mcp-hub.url = "github:ravitemer/mcp-hub";
 
     plugins-shipwright-nvim = {
       url = "github:rktjmp/shipwright.nvim";
@@ -51,8 +52,11 @@
       forEachSystem = utils.eachSystem nixpkgs.lib.platforms.all;
       extra_pkg_config = { };
 
-      dependencyOverlays = [
+      mkDependencyOverlays = system: [
         (utils.standardPluginOverlay inputs)
+        (final: prev: {
+          mcp-hub = inputs.mcp-hub.packages.${system}.default;
+        })
       ];
 
       categoryDefinitions =
@@ -66,9 +70,12 @@
               black
               clang
               clang-tools
+              delta
+              fd
               gawk
               gdtoolkit_4
               isort
+              mcp-hub
               nixd
               nixfmt
               nodePackages.prettier
@@ -189,6 +196,7 @@
     forEachSystem (
       system:
       let
+        dependencyOverlays = mkDependencyOverlays system;
         nixCatsBuilder = utils.baseBuilder luaPath {
           inherit
             nixpkgs
@@ -220,31 +228,32 @@
           moduleNamespace = [ defaultPackageName ];
           inherit
             defaultPackageName
-            dependencyOverlays
             luaPath
             categoryDefinitions
             packageDefinitions
             extra_pkg_config
             nixpkgs
             ;
+          dependencyOverlays = mkDependencyOverlays;
         };
         homeModule = utils.mkHomeModules {
           moduleNamespace = [ defaultPackageName ];
           inherit
             defaultPackageName
-            dependencyOverlays
             luaPath
             categoryDefinitions
             packageDefinitions
             extra_pkg_config
             nixpkgs
             ;
+          dependencyOverlays = mkDependencyOverlays;
         };
       in
       {
 
         overlays = utils.makeOverlays luaPath {
-          inherit nixpkgs dependencyOverlays extra_pkg_config;
+          inherit nixpkgs extra_pkg_config;
+          dependencyOverlays = mkDependencyOverlays;
         } categoryDefinitions packageDefinitions defaultPackageName;
 
         nixosModules.default = nixosModule;