openobex: cleanup, add license

pkgs/tools/bluetooth/openobex/default.nix

···
-{stdenv, fetchurl, pkgconfig, bluez, libusb, cmake}:
+{ stdenv, fetchurl, pkgconfig, bluez, libusb, cmake }:
    
 stdenv.mkDerivation rec {
   name = "openobex-1.7.1";
···
     sha256 = "0mza0mrdrbcw4yix6qvl31kqy7bdkgxjycr0yx7yl089v5jlc9iv";
   };
 
-  buildInputs = [pkgconfig bluez libusb cmake];
+  nativeBuildInputs = [ pkgconfig cmake ];
+  buildInputs = [ bluez libusb ];
 
-  configureFlags = "--enable-apps";
+  configureFlags = [ "--enable-apps" ];
 
   patchPhase = ''
     sed -i "s!/lib/udev!$out/lib/udev!" udev/CMakeLists.txt
     sed -i "/if ( PKGCONFIG_UDEV_FOUND )/,/endif ( PKGCONFIG_UDEV_FOUND )/d" udev/CMakeLists.txt
     '';
 
-  meta = {
+  meta = with stdenv.lib; {
     homepage = http://dev.zuckschwerdt.org/openobex/;
     description = "An open source implementation of the Object Exchange (OBEX) protocol";
-    platforms = stdenv.lib.platforms.linux;
+    platforms = platforms.linux;
+    license = licenses.lgpl2Plus;
   };
 }