1 files changed, 6 insertions, 5 deletions
diff --git a/pkgs/development/tools/tradcpp/default.nix b/pkgs/development/tools/tradcpp/default.nix
index ddcdc38a4fb..c184cee91ca 100644
--- a/pkgs/development/tools/tradcpp/default.nix
+++ b/pkgs/development/tools/tradcpp/default.nix
@@ -1,10 +1,11 @@
-{ stdenv, fetchurl, autoconf }:
+{ lib, stdenv, fetchurl, autoconf }:
 
-stdenv.mkDerivation {
-  name = "tradcpp-0.5.2";
+stdenv.mkDerivation rec {
+  pname = "tradcpp";
+  version = "0.5.2";
 
   src = fetchurl {
-    url = "https://ftp.netbsd.org/pub/NetBSD/misc/dholland/tradcpp-0.5.2.tar.gz";
+    url = "https://ftp.netbsd.org/pub/NetBSD/misc/dholland/${pname}-${version}.tar.gz";
     sha256 = "1h2bwxwc13rz3g2236l89hm47f72hn3m4h7wjir3j532kq0m68bc";
   };
 
@@ -16,7 +17,7 @@ stdenv.mkDerivation {
     ./aarch64.patch
   ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "A traditional (K&R-style) C macro preprocessor";
     platforms = platforms.all;
     license = licenses.bsd2;