Fbs

It used to give the following error:

Traceback (most recent call last):
File "/Users/michael/.pyenv/versions/3.5.4/lib/python3.5/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/Users/michael/.pyenv/versions/3.5.4/lib/python3.5/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/Users/michael/dev/fbs/fbs/__main__.py", line 50, in <module>
_main()
File "/Users/michael/dev/fbs/fbs/__main__.py", line 17, in _main
fbs.cmdline.main()
File "/Users/michael/dev/fbs/fbs/cmdline.py", line 32, in main
fn(*args)
File "/Users/michael/dev/fbs/fbs/builtin_commands/__init__.py", line 107, in freeze
freeze_mac(debug=debug)
File "/Users/michael/dev/fbs/fbs/freeze/mac.py", line 24, in freeze_mac
_fix_sparkle_delta_updates()
File "/Users/michael/dev/fbs/fbs/freeze/mac.py", line 52, in _fix_sparkle_delta_updates
path('${freeze_dir}/Contents/Resources/base_library.zip')
FileNotFoundError: [Errno 2] No such file or directory: '.../target/MyApp.app/Contents/MacOS/base_library.zip' -> '.../target/MyApp.app/Contents/Resources/base_library.zip'

Thank you to SidneyGuenther for submitting the fix!

See https://build-system.fman.io/manual#error-tracking.

It is now even easier to define custom exception handlers. See the source code documentation in the module.

fbs uses a [custom `excepthook`](https://github.com/mherrmann/fbs/blob/1ad32d133a6163e7a76707820936f6b1de54569d/fbs_runtime/excepthook.py) to fix some shortcomings of both Python and PyQt5/PySide2. Previously, it was hard to subclass fbs's classes that do this. In particular, subclasses had to call a private method (`_add_missing_frames`) to get the full stack trace "added" by fbs's custom Excepthooks. Now, `QtExcepthook#handle(...)` gives you the full stack trace without you having to call private methods.