diff --git a/default.nix b/default.nix
index 57a77ab..24bc750 100644
--- a/default.nix
+++ b/default.nix
@@ -4,14 +4,14 @@ rustPlatform.buildRustPackage rec {
 	version = "1.1.6";
 	cargoLock.lockFile = src + /Cargo.lock;
 
-	src = fetchgit {
+	src = builtins.fetchGit {
 		url = "https://github.com/rm-dr/daisy.git";
-		rev = "v${version}";
-		sha256 = "";
+		ref = "refs/tags/v${version}";
+		#rev = ""; Ideally, we'd have a hash here, but that would make git history messy.
 	};
 
 	meta = with lib; {
-		description = "A pretty command-line scientific calculator";
+		description = "A general-purpose scientific calculator";
 		homepage = "https://github.com/rm-dr/daisy";
 		#license = licenses.GPL;
 		maintainers = [ maintainers.tailhook ];