Attempting to run calibre built and "develop"ed from a git checkout (again, thanks for the guidance

), calibre crashes and burns with the following message:
Code:
calibre, version 2.32.1
ERROR: Startup error: There was an error during calibre startup. Parts of calibre may not function. Click Show details to learn more.
Traceback (most recent call last):
File "/home/eschwartz/git/calibre/src/calibre/gui2/main.py", line 273, in initialize_db_stage2
self.start_gui(db)
File "/home/eschwartz/git/calibre/src/calibre/gui2/main.py", line 213, in start_gui
main.initialize(self.library_path, db, self.listener, self.actions)
File "/home/eschwartz/git/calibre/src/calibre/gui2/ui.py", line 242, in initialize
self.jobs_button = JobsButton(horizontal=True, parent=self)
File "/home/eschwartz/git/calibre/src/calibre/gui2/jobs.py", line 465, in __init__
self.pi = ProgressIndicator(self, size)
TypeError: QProgressIndicator(): argument 1 has unexpected type 'JobsButton'
Probable cause -- ArchLinux just updated PyQt to 5.5 today.