Merge pull request #161456 from siraben/tree-sitter-overridable

pkgs/development/tools/parsing/tree-sitter/default.nix

···
 , enableShared ? !stdenv.hostPlatform.isStatic
 , enableStatic ? stdenv.hostPlatform.isStatic
 , webUISupport ? false
+, extraGrammars ? {}
 }:
 
 # TODO: move to carnix or https://github.com/kolloch/crate2nix
···
     runCommand "grammars" { } (''
       mkdir $out
     '' + (lib.concatStrings (lib.mapAttrsToList
-      (name: grammar: "ln -s ${fetchGrammar grammar} $out/${name}\n")
+      (name: grammar: "ln -s ${if grammar ? src then grammar.src else fetchGrammar grammar} $out/${name}\n")
       (import ./grammars { inherit lib; }))));
-
   builtGrammars =
     let
       change = name: grammar:
         callPackage ./grammar.nix { } {
           language = if grammar ? language then grammar.language else name;
           inherit version;
-          source = fetchGrammar grammar;
+          source = if grammar ? src then grammar.src else fetchGrammar grammar;
           location = if grammar ? location then grammar.location else null;
         };
-      grammars' = (import ./grammars { inherit lib; });
+      grammars' = import ./grammars { inherit lib; } // extraGrammars;
       grammars = grammars' //
         { tree-sitter-ocaml = grammars'.tree-sitter-ocaml // { location = "ocaml"; }; } //
         { tree-sitter-ocaml-interface = grammars'.tree-sitter-ocaml // { location = "interface"; }; } //
···
         { tree-sitter-typescript = grammars'.tree-sitter-typescript // { location = "typescript"; }; } //
         { tree-sitter-tsx = grammars'.tree-sitter-typescript // { location = "tsx"; }; };
     in
-    lib.mapAttrs change grammars;
+      lib.mapAttrs change (grammars);
 
   # Usage:
   # pkgs.tree-sitter.withPlugins (p: [ p.tree-sitter-c p.tree-sitter-java ... ])

pkgs/top-level/all-packages.nix

···
 
   travis = callPackage ../development/tools/misc/travis { };
 
-  tree-sitter = callPackage ../development/tools/parsing/tree-sitter {
+  tree-sitter = makeOverridable (callPackage ../development/tools/parsing/tree-sitter) {
     inherit (darwin.apple_sdk.frameworks) Security;
   };