Simplified install process on Mac

(cherry picked from commit 726eec8)

THIRDPARTYLICENSES.md

@@ -55,3 +55,4 @@
   * [SockJS-Tornado](http://github.com/mrjoes/sockjs-tornado/): MIT
   * [Tornado](http://www.tornadoweb.org/): Apache License 2.0
   * [watchdog](http://github.com/gorakhargosh/watchdog): Apache License 2.0
+  * [appdirs](http://github.com/ActiveState/appdirs): MIT

docs/development/index.rst

@@ -145,7 +145,6 @@ You'll need a user account with administrator privileges.
        cd OctoPrint
        virtualenv venv
        source venv/bin/activate
-       pip install -U pyobjc
        pip install -e .[develop]
 
 You can then start OctoPrint via ``~/devel/OctoPrint/venv/bin/octoprint`` or just ``octoprint`` if you activated the virtual

setup.py

@@ -50,6 +50,9 @@ INSTALL_REQUIRES = [
 	"websocket-client>=0.40,<0.41"
 ]
 
+if sys.platform == "darwin":
+	INSTALL_REQUIRES.append("appdirs>=1.4.0")
+
 # Additional requirements for optional install options
 EXTRA_REQUIRES = dict(
 	# Dependencies for developing OctoPrint

src/octoprint/settings.py

@@ -1490,12 +1490,8 @@ class Settings(object):
 def _default_basedir(applicationName):
 	# taken from http://stackoverflow.com/questions/1084697/how-do-i-store-desktop-application-data-in-a-cross-platform-way-for-python
 	if sys.platform == "darwin":
-		from AppKit import NSSearchPathForDirectoriesInDomains
+		from appdirs import *
-		# http://developer.apple.com/DOCUMENTATION/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Functions/Reference/reference.html#//apple_ref/c/func/NSSearchPathForDirectoriesInDomains
+		return user_data_dir(applicationName, "")
-		# NSApplicationSupportDirectory = 14
-		# NSUserDomainMask = 1
-		# True for expanding the tilde into a fully qualified path
-		return os.path.join(NSSearchPathForDirectoriesInDomains(14, 1, True)[0], applicationName)
 	elif sys.platform == "win32":
 		return os.path.join(os.environ["APPDATA"], applicationName)
 	else: