python3Packages.wagtail: relax willow dependency

    substituteInPlace setup.py \

      --replace "beautifulsoup4>=4.8,<4.12" "beautifulsoup4>=4.8" \

      --replace "draftjs_exporter>=2.1.5,<3.0" "draftjs_exporter>=2.1.5,<6.0" \

      --replace "django-taggit>=2.0,<5.0" "django-taggit>=2.0,<6.0"

      --replace "django-taggit>=2.0,<5.0" "django-taggit>=2.0,<6.0" \

      --replace "Willow[heif]>=1.6.2,<1.7" "Willow[heif]>=1.6.2,<2"

  '';

  propagatedBuildInputs = [