Rethink RuntimeDir fallback handling

[The-Compiler]

qutebrowser/qutebrowser/utils/standarddir.py

Lines 186 to 216 in 0755fad

	def _init_runtime(args):
	"""Initialize location for runtime data."""
	if utils.is_linux:
	typ = QStandardPaths.RuntimeLocation
	else:
	# RuntimeLocation is a weird path on macOS and Windows.
	typ = QStandardPaths.TempLocation
	overridden, path = _from_args(typ, args)
	if not overridden:
	try:
	path = _writable_location(typ)
	except EmptyValueError:
	# Fall back to TempLocation when RuntimeLocation is misconfigured
	if typ == QStandardPaths.TempLocation:
	raise
	path = _writable_location(QStandardPaths.TempLocation)
	# This is generic, but per-user.
	# _writable_location makes sure we have a qutebrowser-specific subdir.
	#
	# For TempLocation:
	# "The returned value might be application-specific, shared among
	# other applications for this user, or even system-wide."
	#
	# Unfortunately this path could get too long for sockets (which have a
	# maximum length of 104 chars), so we don't add the username here...
	_create(path)
	_locations[_Location.runtime] = path

• Why did we need that fallback on macOS/Windows?
• Right now we use the fallback on BSD as well - should we?
• Can we at least add the UID or something, so multiple users can use qutebrowser with the fallback dir?

Also see #888