pyqt5 not working in linux

[jasjuang]

Not sure why, but new users cannot open new issues nor respond to issues in linuxbrew-core. I want to respond to https://github.com/Homebrew/linuxbrew-core/pull/23174

Thanks for the fix. I can confirm that qt@5 is now working for me, but pyqt@5 is broken. Here are the error message from the terminal

==> Installing pcl dependency: pyqt@5
==> sip-install --target-dir /home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/lib/python3.9/site-packages --scripts-dir /home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/bin --confirm-
==> python3 -c import setuptools... --no-user-cfg install --prefix=/home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2 --install-scripts=/home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/
==> sip-install --target-dir /home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/lib/python3.9/site-packages
==> sip-install --target-dir /home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/lib/python3.9/site-packages
==> sip-install --target-dir /home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/lib/python3.9/site-packages
==> sip-install --target-dir /home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/lib/python3.9/site-packages
==> sip-install --target-dir /home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/lib/python3.9/site-packages
==> sip-install --target-dir /home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/lib/python3.9/site-packages
Last 15 lines from /home/jasjuang/.cache/Homebrew/Logs/pyqt@5/08.sip-install:
sip-install
--target-dir
/home/linuxbrew/.linuxbrew/Cellar/pyqt@5/5.15.4_2/lib/python3.9/site-packages

Querying qmake about your Qt installation...
These bindings will be built: QtWebEngineCore, QtWebEngine, QtWebEngineWidgets.
Generating the QtWebEngineCore bindings...
Generating the QtWebEngine bindings...
Generating the QtWebEngineWidgets bindings...
Generating the .pro file for the QtWebEngineCore module...
Generating the .pro file for the QtWebEngine module...
Generating the .pro file for the QtWebEngineWidgets module...
Generating the top-level .pro file...
Generating the Makefiles...
sip-install: '/home/linuxbrew/.linuxbrew/opt/qt@5/bin/qmake -recursive PyQtWebEngine.pro' failed returning 3

READ THIS: https://docs.brew.sh/Troubleshooting

[danielnachun]

I think we disabled QtWebEngine in Linux, which probably means we need to figure out how to disable it for pyqt@5 as well. It's possible that QtWebEngine builds on Linux but I haven't tested that yet.

[danielnachun]

I've opened a PR to fix this: Homebrew/homebrew-core#84181. It turns out we were disabling QtWebEngine on macOS ARM64 but not Linux. This was easy enough to fix and only one other change was needed to build this on Linux.