[PyQt] PyQt 5.13.2 build error: module 'sipbuild.api' has no attribute ‘prepare_metadata_for_build_wheel'

[FX]

> These are installed in the directory containing the Python interpreter that is executing sip-install. If you want an isolated build of PyQt you would normally create a venv for that purpose, install sip5 into that venv and run sip-install in that venv. Is that a problem?

We could do that, but that is duplicating sip in two packages that need it (pyqt and qscintilla).

> There are other files potentially copied into the Qt installation (Designer and Qml plugins and QScintilla .api files).

For QScintilla, there is an option. For the others (Designer and Qml plugins), the sip-install script apparently detected that it does not have write permission.

Thanks,
FX