TypeError: Converter.__init__() got an unexpected keyword argument 'omit_if_default'

[BoldMonday]

After updating to fontmake 3.10.0 I'm unable to generate fonts anymore. Here's the traceback:

Traceback (most recent call last):
  File "/Users/paulus/code/fontmake/bin/fontmake", line 5, in <module>
    from fontmake.__main__ import main
  File "/Users/paulus/code/fontmake/lib/python3.10/site-packages/fontmake/__main__.py", line 30, in <module>
    from fontmake.font_project import INTERPOLATABLE_OUTPUTS, CurveConversion, FontProject
  File "/Users/paulus/code/fontmake/lib/python3.10/site-packages/fontmake/font_project.py", line 32, in <module>
    import ufoLib2
  File "/Users/paulus/code/fontmake/lib/python3.10/site-packages/ufoLib2/__init__.py", line 5, in <module>
    from ufoLib2.objects import Font
  File "/Users/paulus/code/fontmake/lib/python3.10/site-packages/ufoLib2/objects/__init__.py", line 3, in <module>
    from ufoLib2.objects.anchor import Anchor
  File "/Users/paulus/code/fontmake/lib/python3.10/site-packages/ufoLib2/objects/anchor.py", line 13, in <module>
    class Anchor(AttrDictMixin):
  File "/Users/paulus/code/fontmake/lib/python3.10/site-packages/ufoLib2/serde/__init__.py", line 78, in serde
    serde_submodule = import_module(f"ufoLib2.serde.{fmt}")
  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/Users/paulus/code/fontmake/lib/python3.10/site-packages/ufoLib2/serde/json.py", line 6, in <module>
    from ufoLib2.converters import structure, unstructure
  File "/Users/paulus/code/fontmake/lib/python3.10/site-packages/ufoLib2/converters.py", line 139, in <module>
    default_converter = Converter(
TypeError: Converter.__init__() got an unexpected keyword argument 'omit_if_default'

Installed packages:

Package           Version
----------------- -----------
appdirs           1.4.4
attrs             24.2.0
booleanOperations 0.9.0
cattrs            22.1.0
cffsubr           0.3.0
compreffor        0.5.6
cu2qu             1.6.7.post1
exceptiongroup    1.0.0rc8
fontmake          3.10.0
fontMath          0.9.4
fonttools         4.54.1
fs                2.4.16
glyphsLib         6.9.2
lxml              4.9.1
openstep-plist    0.3.0
pip               24.3.1
pyclipper         1.3.0.post3
setuptools        58.1.0
six               1.16.0
statmake          0.5.1
ufo2ft            3.3.1
ufoLib2           0.16.0
unicodedata2      15.1.0

[BoldMonday]

@anthrotype or anyone else who can comment on this?

For the record: this happened after I did pip install --upgrade fontmake.

[anthrotype]

that's strange. Can you try pip install -U cattrs?

[anthrotype]

@madig I think ufoLib2 might be depending on some newer cattrs version than is stated in its https://github.com/fonttools/ufoLib2/blob/bbf9d0544e3c342d41d26039c7dc30fd95dbb38b/pyproject.toml#L30

we probably forgot to bump the minimum dependency version in there. I see that the requirements.txt used to test ufoLib2 is using cattrs==24.1.2
https://github.com/fonttools/ufoLib2/blob/bbf9d0544e3c342d41d26039c7dc30fd95dbb38b/requirements.txt#L9

[madig]

Oh. I'll just move the cattrs requirement to >= 24.1.