fix(flutter-tools): bug where dart lsp is not found

modules/default.nix

@@ -25,13 +25,13 @@ inputs: {
       // extraSpecialArgs;
   };
 
-  buildPlug = name:
-    buildVimPluginFrom2Nix rec {
-      pname = name;
-      version = "master";
-      src = assert lib.asserts.assertMsg (name != "nvim-treesitter") "Use buildTreesitterPlug for building nvim-treesitter.";
-        getAttr pname inputs;
-    };
+  buildPlug = {pname, ...} @ args:
+    assert lib.asserts.assertMsg (pname != "nvim-treesitter") "Use buildTreesitterPlug for building nvim-treesitter.";
+      buildVimPluginFrom2Nix (args
+        // {
+          version = "master";
+          src = getAttr pname inputs;
+        });
 
   buildTreesitterPlug = grammars: vimPlugins.nvim-treesitter.withPlugins (_: grammars);
 
@@ -45,7 +45,13 @@ inputs: {
         (
           if (plug == "nvim-treesitter")
           then (buildTreesitterPlug vimOptions.treesitter.grammars)
-          else (buildPlug plug)
+          else if (plug == "flutter-tools-patched")
+          then
+            (buildPlug {
+              pname = "flutter-tools";
+              patches = [../patches/flutter-tools.patch];
+            })
+          else (buildPlug {pname = plug;})
         )
       else plug
     ))

modules/languages/dart/config.nix

@@ -35,7 +35,10 @@ in {
     })
 
     (mkIf (ftcfg.enable) {
-      vim.startPlugins = ["flutter-tools"];
+      vim.startPlugins =
+        if ftcfg.enableNoResolvePatch
+        then ["flutter-tools-patched"]
+        else ["flutter-tools"];
 
       vim.luaConfigRC.flutter-tools = nvim.dag.entryAnywhere ''
         require('flutter-tools').setup {

modules/languages/dart/dart.nix

@@ -56,6 +56,16 @@ in {
         default = config.vim.languages.enableLSP;
       };
 
+      enableNoResolvePatch = mkOption {
+        description = ''
+          Patch flutter-tools so that it doesn't resolve symlinks when detecting flutter path.
+          This is required if you want to use a flutter package built with nix.
+          If you are using a flutter SDK installed from a different source and encounter the error "`dart` missing from PATH", disable this option.
+        '';
+        type = types.bool;
+        default = true;
+      };
+
       color = {
         enable = mkEnableOption "Whether or mot to highlight color variables at all";