kitty: fix patch for darwin

pkgs/applications/misc/kitty/png2icns.patch

@@ -1,19 +1,21 @@
---- a/setup.py
+diff -aru a/setup.py b/setup.py
-+++ b/setup.py
+--- a/setup.py	2019-07-29 11:09:32.000000000 -0400
-@@ -744,9 +744,15 @@ Categories=System;TerminalEmulator;
++++ b/setup.py	2019-07-29 11:11:37.000000000 -0400
-         if not os.path.exists(logo_dir):
+@@ -784,9 +784,15 @@
-             raise SystemExit('The kitty logo has not been generated, you need to run logo/make.py')
+ def create_macos_app_icon(where='Resources'):
-         subprocess.check_call([
+     logo_dir = os.path.abspath(os.path.join('logo', appname + '.iconset'))
--            'iconutil', '-c', 'icns', logo_dir, '-o',
+     subprocess.check_call([
-+            'png2icns',
+-        'iconutil', '-c', 'icns', logo_dir, '-o',
-             os.path.join('Resources', os.path.basename(logo_dir).partition('.')[0] + '.icns')
++        'png2icns',
--        ])
+         os.path.join(where, os.path.basename(logo_dir).partition('.')[0] + '.icns')
-+        ] + [os.path.join(logo_dir, logo) for logo in (
+-    ])
-+            'icon_128x128.png',
++    ] + [os.path.join(logo_dir, logo) for logo in [
-+            'icon_16x16.png',
++        'icon_128x128.png',
-+            'icon_256x256.png',
++        'icon_16x16.png',
-+            'icon_32x32.png',
++        'icon_256x256.png',
-+            'icon_512x512.png',
++        'icon_32x32.png',
-+        )])
++        'icon_512x512.png',
-     # }}}
++    ]])
- # }}}
+ 
+ 
+ def create_minimal_macos_bundle(args, where):