blktrace: switch to pname + version, cleanup

pkgs/os-specific/linux/blktrace/default.nix

···
 { lib, stdenv, fetchurl, libaio }:
 
-stdenv.mkDerivation {
-  name = "blktrace-1.3.0";
+stdenv.mkDerivation rec {
+  pname = "blktrace";
+  version = "1.3.0";
 
   # Official source
   # "git://git.kernel.org/pub/scm/linux/kernel/git/axboe/blktrace.git"
   src = fetchurl {
-    url = "http://brick.kernel.dk/snaps/blktrace-1.3.0.tar.bz2";
+    url = "https://brick.kernel.dk/snaps/blktrace-${version}.tar.bz2";
     sha256 = "sha256-1t7aA4Yt4r0bG5+6cpu7hi2bynleaqf3yoa2VoEacNY=";
   };
 
···
     sed s,/usr/local,$out, -i Makefile
   '';
 
-  meta = {
+  meta = with lib; {
     description = "Block layer IO tracing mechanism";
-    license = lib.licenses.gpl2;
-    platforms = lib.platforms.linux;
+    maintainers = with maintainers; [ ];
+    license = licenses.gpl2;
+    platforms = platforms.linux;
   };
 }