tox 4 requires a boolean value, so use '1' to FORCE_COLOR. Fixes jaraco/skeleton#74.
@@ -7,8 +7,10 @@ env:
# Request colored output from CLI tools supporting it. Different tools
# interpret the value differently. For some, just being set is sufficient.
# For others, it must be a non-zero integer. For yet others, being set
- # to a non-empty value is sufficient.
- FORCE_COLOR: -106
+ # to a non-empty value is sufficient. For tox, it must be one of
+ # <blank>, 0, 1, false, no, off, on, true, yes. The only enabling value
+ # in common is "1".
+ FORCE_COLOR: 1
# MyPy's color enforcement (must be a non-zero number)
MYPY_FORCE_COLOR: -42
# Recognized by the `py` package, dependency of `pytest` (must be "1")
