Appveyor: temporarily pin tox version
As in for Travis.
@@ -22,7 +22,7 @@ install:
- cinst imagemagick -y
# TODO: remove --allow-empty-checksums when unrar offers a proper checksum
- cinst unrar -y --allow-empty-checksums
- - "%PYTHON%/Scripts/pip.exe install tox"
+ - "%PYTHON%/Scripts/pip.exe install tox<=3.8.1"
- "%PYTHON%/Scripts/tox.exe -e %TOX_ENV% --notest"
test_script:
