ed: avoid the useless rebuild due to #21752

NixOS · Jan 8, 2017 · 936bc23 · 936bc23
1 parent f553aac
commit 936bc23
Showing 1 changed file with 6 additions and 5 deletions.
diff --git a/pkgs/applications/editors/ed/default.nix b/pkgs/applications/editors/ed/default.nix
@@ -2,18 +2,19 @@
 
 stdenv.mkDerivation rec {
   name = "ed-1.13";
-  file_md5 = "fb8ffc8d8072e13dd5799131e889bfa5"; # for fedora mirror
 
   src = fetchurl {
     # gnu only provides *.lz tarball, which is unfriendly for stdenv bootstrapping
     #url = "mirror://gnu/ed/${name}.tar.gz";
     # When updating, please make sure the sources pulled match those upstream by
     # Unpacking both tarballs and running `find . -type f -exec sha256sum \{\} \; | sha256sum`
     # in the resulting directory
-    urls = [
-      "http://pkgs.fedoraproject.org/repo/extras/ed/${name}.tar.bz2/${file_md5}/${name}.tar.bz2"
-      "http://fossies.org/linux/privat/${name}.tar.bz2"
-    ];
+    urls = let file_md5 = "fb8ffc8d8072e13dd5799131e889bfa5"; # for fedora mirror
+      in [
+        ("http://pkgs.fedoraproject.org/repo/extras/ed"
+          + "/${name}.tar.bz2/${file_md5}/${name}.tar.bz2")
+        "http://fossies.org/linux/privat/${name}.tar.bz2"
+      ];
     sha256 = "1iym2fsamxr886l3sz8lqzgf00bip5cr0aly8jp04f89kf5mvl0j";
   };