elementsd: minor refactoring

- Use pname
- urls -> url

pkgs/elementsd/default.nix

@@ -4,19 +4,19 @@
 
 with stdenv.lib;
 stdenv.mkDerivation rec {
-  name = "elements" + (toString (optional (!withGui) "d")) + "-" + version;
+  pname = "elements${optionalString (!withGui) "d"}";
   version = "0.18.1.9";
 
   src = fetchurl {
-    urls = [
-            "https://github.com/ElementsProject/elements/archive/elements-${version}.tar.gz"
-           ];
+    url = "https://github.com/ElementsProject/elements/archive/elements-${version}.tar.gz";
+    # Use ./get-sha256.sh to fetch latest (verified) sha256
     sha256 = "c6f1b040a896a1aaa7340f5cd48e119c84fef88df5d4c17d5ad5c13783f5b6c7";
   };
 
   nativeBuildInputs =
     [ pkgconfig autoreconfHook ]
     ++ optional withGui wrapQtAppsHook;
+
   buildInputs = [ openssl db48 boost zlib zeromq
                   miniupnpc protobuf libevent]
                   ++ optionals stdenv.isLinux [ utillinux ]
@@ -27,8 +27,8 @@ stdenv.mkDerivation rec{
                    ] ++ optionals (!doCheck) [
                      "--disable-tests"
                      "--disable-gui-tests"
-                   ]
-                     ++ optionals withGui [ "--with-gui=qt5"
+                   ] ++ optionals withGui [
+                     "--with-gui=qt5"
                      "--with-qt-bindir=${qtbase.dev}/bin:${qttools.dev}/bin"
                    ];