From b7e7d35cccea936bc41d9f2602bda3effee97b0a Mon Sep 17 00:00:00 2001
From: Yureka <yuka@yuka.dev>
Date: Fri, 8 Oct 2021 19:09:43 +0200
Subject: yarn2nix: workaround for NixOS/nix#5128

---
 pkgs/development/tools/yarn2nix-moretea/yarn2nix/lib/generateNix.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/tools/yarn2nix-moretea/yarn2nix/lib/generateNix.js b/pkgs/development/tools/yarn2nix-moretea/yarn2nix/lib/generateNix.js
index 7df4679a1308..c0ec1751ed15 100644
--- a/pkgs/development/tools/yarn2nix-moretea/yarn2nix/lib/generateNix.js
+++ b/pkgs/development/tools/yarn2nix-moretea/yarn2nix/lib/generateNix.js
@@ -45,11 +45,13 @@ function fetchgit(fileName, url, rev, branch, builtinFetchGit) {
     name = "${fileName}";
     path =
       let${builtinFetchGit ? `
-        repo = builtins.fetchGit {
+        repo = builtins.fetchGit ({
           url = "${url}";
           ref = "${branch}";
           rev = "${rev}";
-        };
+        } // (if builtins.substring 0 3 builtins.nixVersion == "2.4" then {
+          allRefs = true;
+        } else {}));
       ` : `
         repo = fetchgit {
           url = "${url}";
-- 
cgit v1.2.3