flake: use builtins.fetchTree to shallow-clone grammar repos

helix-editor · Mar 9, 2022 · 77598dd · 77598dd
1 parent a2a54cf
commit 77598dd
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Showing 3 changed files with 19 additions and 45 deletions.
diff --git a/flake.lock b/flake.lock
diff --git a/flake.nix b/flake.nix
@@ -12,17 +12,9 @@
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.rustOverlay.follows = "rust-overlay";
     };
-    # NOTE: the flake looks like it is hanging when it pulls this input because
-    # the submodules take a long time to clone. This will be fixed in #1659.
-    helix = {
-      url = "https://github.com/helix-editor/helix.git";
-      type = "git";
-      submodules = true;
-      flake = false;
-    };
   };
 
-  outputs = inputs@{ nixCargoIntegration, helix, ... }:
+  outputs = inputs@{ nixCargoIntegration, ... }:
     nixCargoIntegration.lib.makeOutputs {
       root = ./.;
       renameOutputs = { "helix-term" = "helix"; };

diff --git a/grammars.nix b/grammars.nix
@@ -13,10 +13,11 @@ let
   gitGrammars = builtins.filter isGitGrammar languagesConfig.grammar;
   buildGrammar = grammar:
     let
-      source = builtins.fetchGit {
+      source = builtins.fetchTree {
+        type = "git";
         url = grammar.source.git;
         rev = grammar.source.rev;
-        allRefs = true;
+        shallow = true;
       };
     in stdenv.mkDerivation rec {
       # see https://github.com/NixOS/nixpkgs/blob/fbdd1a7c0bc29af5325e0d7dd70e804a972eb465/pkgs/development/tools/parsing/tree-sitter/grammar.nix