No toolchain available for Pi4 when Pi runs either 32-bit or 64-bit OS. (Still!)

I have seen the maxgerhardt issue#9.
Compiling any project for the RP2040 on a Raspberry Pi is impossible since the compiler package is missing. For a Pi4 there is no toolchain for either armv7 or armv8, which is what you have for a RPi model 4 running in 32-bit or 64 bit.

Since there is a PR outstanding for this, I don't understand the comment on the original issue.

When the Pi models available didn't have the power to run VSCode and the platformio integration, I understand reluctance to accept community stuff relating to "minority" ports. However, it is possible for this to be fixed (or at least documented here!) so that the Raspberry Pi Pico platform (RP2040) can be supported out of the box.
If it was resolved, it would be possible to use the software the way the registry design was intended to work - one place to provide the platform, the framework, and the toolchains for devices.

Start by reviewing the Raspberry Pi Pico platform support and the toolchain packaging for Raspberry Pi 4 armv7 and armv8 environments. No file or test is named in the issue, so first locate where compiler packages and supported architectures are declared. Done means the RP2040 toolchain is available for both OS architectures, or the supported setup is clearly documented.