icu65: init at 65.1

pkgs/development/libraries/icu/65.nix

@@ -0,0 +1,4 @@
+import ./base.nix {
+  version = "65.1";
+  sha256 = "0j6r6qqnhfr5iqkx53k63ifkm93kv1kkb7h2mlgd1mnnndk79qsk";
+}

pkgs/development/libraries/icu/base.nix

@@ -9,8 +9,7 @@ let
 
   baseAttrs = {
     src = fetchurl {
-      url = "http://download.icu-project.org/files/${pname}/${version}/${pname}-"
-        + (stdenv.lib.replaceChars ["."] ["_"] version) + "-src.tgz";
+      url = "https://github.com/unicode-org/icu/releases/download/release-${lib.replaceChars [ "." ] [ "-" ] version}/icu4c-${lib.replaceChars [ "." ] [ "_" ] version}-src.tgz";
       inherit sha256;
     };