diff --git a/pkgs/build-support/node/fetch-yarn-deps/default.nix b/pkgs/build-support/node/fetch-yarn-deps/default.nix
index f3b5a6bd163b..d95b1078c162 100644
--- a/pkgs/build-support/node/fetch-yarn-deps/default.nix
+++ b/pkgs/build-support/node/fetch-yarn-deps/default.nix
@@ -6,6 +6,8 @@ let
     sha512 = "sha512-GpSwvyXOcOOlV70vbnzjj4fW5xW/FdUF6nQEt1ENy7m4ZCczi1+/buVUPAqmGfqznsORNFzUMjctTIp8a9tuCQ==";
   };
 
+  tests = callPackage ./tests {};
+
 in {
   prefetch-yarn-deps = stdenv.mkDerivation {
     name = "prefetch-yarn-deps";
@@ -38,6 +40,8 @@ in {
 
       runHook postInstall
     '';
+
+    passthru = { inherit tests; };
   };
 
   fetchYarnDeps = let
@@ -75,6 +79,6 @@ in {
     } // hash_ // (removeAttrs args ["src" "name" "hash" "sha256"]));
 
   in lib.setFunctionArgs f (lib.functionArgs f) // {
-    tests = callPackage ./tests {};
+    inherit tests;
   };
 }
diff --git a/pkgs/build-support/node/fetch-yarn-deps/index.js b/pkgs/build-support/node/fetch-yarn-deps/index.js
index 9f95e1697030..3cae1c16a2e7 100755
--- a/pkgs/build-support/node/fetch-yarn-deps/index.js
+++ b/pkgs/build-support/node/fetch-yarn-deps/index.js
@@ -78,12 +78,21 @@ const isGitUrl = pattern => {
 }
 
 const downloadPkg = (pkg, verbose) => {
+	const [ name, spec ] = pkg.key.split('@', 2);
+	if (spec.startsWith('file:')) {
+		console.info(`ignoring relative file:path dependency "${spec}"`)
+		return
+	}
+
 	const [ url, hash ] = pkg.resolved.split('#')
 	if (verbose) console.log('downloading ' + url)
 	const fileName = urlToName(url)
 	if (url.startsWith('https://codeload.github.com/') && url.includes('/tar.gz/')) {
 		const s = url.split('/')
-		downloadGit(fileName, `https://github.com/${s[3]}/${s[4]}.git`, s[6])
+		return downloadGit(fileName, `https://github.com/${s[3]}/${s[4]}.git`, s[s.length-1])
+	} else if (url.startsWith('https://github.com/') && url.endsWith('.tar.gz')) {
+		const s = url.split('/')
+		return downloadGit(fileName, `https://github.com/${s[3]}/${s[4]}.git`, s[s.length-1].replace(/.tar.gz$/, ''))
 	} else if (isGitUrl(url)) {
 		return downloadGit(fileName, url.replace(/^git\+/, ''), hash)
 	} else if (url.startsWith('https://')) {
diff --git a/pkgs/build-support/node/fetch-yarn-deps/tests/default.nix b/pkgs/build-support/node/fetch-yarn-deps/tests/default.nix
index 19451466f24f..8ffe103a9548 100644
--- a/pkgs/build-support/node/fetch-yarn-deps/tests/default.nix
+++ b/pkgs/build-support/node/fetch-yarn-deps/tests/default.nix
@@ -3,14 +3,18 @@
 {
   simple = testers.invalidateFetcherByDrvHash fetchYarnDeps {
     yarnLock = ./simple.lock;
-    sha256 = "sha256-Erdkw2E8wWT09jFNLXGkrdwKl0HuSZWnUDJUrV95vSE=";
+    sha256 = "sha256-FRrt8BixleILmFB2ZV8RgPNLqgS+dlH5nWoPgeaaNQ8=";
   };
   gitDep = testers.invalidateFetcherByDrvHash fetchYarnDeps {
     yarnLock = ./git.lock;
-    sha256 = "sha256-lAqN4LpoE+jgsQO1nDtuORwcVEO7ogEV53jCu2jFJUI=";
+    sha256 = "sha256-f90IiEzHDiBdswWewRBHcJfqqpPipaMg8N0DVLq2e8Q=";
   };
   githubDep = testers.invalidateFetcherByDrvHash fetchYarnDeps {
     yarnLock = ./github.lock;
-    sha256 = "sha256-Tsfgyjxz8x6gNmfN0xR7G/NQNoEs4svxRN/N+26vfJU=";
+    sha256 = "sha256-DIKrhDKoqm7tHZmcuh9eK9VTqp6BxeW0zqDUpY4F57A=";
+  };
+  gitUrlDep = testers.invalidateFetcherByDrvHash fetchYarnDeps {
+    yarnLock = ./giturl.lock;
+    sha256 = "sha256-VPnyqN6lePQZGXwR7VhbFnP7/0/LB621RZwT1F+KzVQ=";
   };
 }
diff --git a/pkgs/build-support/node/fetch-yarn-deps/tests/giturl.lock b/pkgs/build-support/node/fetch-yarn-deps/tests/giturl.lock
new file mode 100644
index 000000000000..154030a7e358
--- /dev/null
+++ b/pkgs/build-support/node/fetch-yarn-deps/tests/giturl.lock
@@ -0,0 +1,11 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"autocomplete-atom-api@https://codeload.github.com/atom/autocomplete-atom-api/legacy.tar.gz/refs/tags/v0.10.7":
+  version "0.10.7"
+  resolved "https://codeload.github.com/atom/autocomplete-atom-api/legacy.tar.gz/refs/tags/v0.10.7#c9d51fa721d543ccfc1b2189101155e81db6b97d"
+
+"find-and-replace@https://github.com/atom-community/find-and-replace/archive/refs/tags/v0.220.1.tar.gz":
+  version "0.220.1"
+  resolved "https://github.com/atom-community/find-and-replace/archive/refs/tags/v0.220.1.tar.gz#d7a0f56511e38ee72a89895a795bbbcab4a1a405"