treewide: name -> pname (easy cases) (#66585)

treewide replacement of

stdenv.mkDerivation rec {
  name = "*-${version}";
  version = "*";

to pname

pkgs/games/riko4/default.nix

@@ -5,7 +5,7 @@ let
   # and this library does not have a proper release version, so let the
   # derivation for this stay next to the Riko4 derivation for now.
   sdl-gpu = stdenv.mkDerivation rec {
-    name = "sdl-gpu-${version}";
+    pname = "sdl-gpu";
     version = "2018-11-01";
     src = fetchFromGitHub {
       owner = "grimfang4";
@@ -27,7 +27,7 @@ let
 in
 
 stdenv.mkDerivation rec {
-  name = "riko4-${version}";
+  pname = "riko4";
   version = "0.1.0";
   src = fetchFromGitHub {
     owner = "incinirate";