Install/develop on MacBook, run on Raspberry Pi?

SGaist

Hi,

Are you planing to use PySide2 or PyQt5 ?

If so, then you can develop the application on your MacBook and then use something like git to sync your source tree on the Pi and use the packages provided by the distribution you are using on the Pi.

Otherwise, if the native packages are too old, then yes, you are going to need to setup a cross-compiling environment and cross-compile Qt as well as your application.

You will likely have to also compile the cross-toolchain first from Linaro.

OutsourcedGuru

@SGaist Not knowing a lot about this, I'm guessing I would like to take the PySide2 route. I'm not sure why there's a compilation phase with this step (unless we're talking about the standard pyc output.

SGaist

I see I wasn't as clear as I wanted. I meant that if you wanted to go with C++ then you'd have to cross-compile stuff.

OutsourcedGuru

@SGaist

Let's see... the PySide2 route fails at the step to install pyside2 with either version tried:

pip install --index-url=http://download.qt.io/snapshots/ci/pyside/5.12/latest pyside2 --trusted-host download.qt.io

It simply can't be found. Visiting the link above in a browser shows a variety of files which may be downloaded by pip install. Presumably the Raspberry Pi 3B's reported architecture with Python 2.7 doesn't match up to any of those wheels. :checking that theory:

So it's not win_amd64, none-win32, manylinux1_x86_64, macosx_10_12_intel, manylinux1_x86_64, macosx_10_12_intel. The Raspberry Pi 3B would be something more like manylinux1_armv6 or manylinux1_armv7 perhaps but it's not available in the list as seen in Qt's stash.

PySide2-5.12.1a1.dev1547885753-5.12.0-cp35.cp36.cp37-none-win_amd64.whl
PySide2-5.12.1a1.dev1547885753-5.12.0-cp35.cp36.cp37-none-win32.whl
PySide2-5.12.1a1.dev1547885753-5.12.0-cp35.cp36.cp37-abi3-manylinux1_x86_64.whl
PySide2-5.12.1a1.dev1547885753-5.12.0-cp35.cp36.cp37-abi3-macosx_10_12_intel.whl
PySide2-5.12.1a1.dev1547885753-5.12.0-cp27-cp27mu-manylinux1_x86_64.whl
PySide2-5.12.1a1.dev1547885753-5.12.0-cp27-cp27m-macosx_10_12_intel.whl

And the EGLFS route fails at Step 10 on the configure command. (See error from linked post.)

I can't use the Embedded Linux route since I need to install this on a particular Raspbian Stretch Lite image that's already somewhat configured.

SGaist

Why not use the first version: pip install PySide2 ?

OutsourcedGuru

@SGaist I tried that of course (same error message and result). I also tried to reply earlier but since I'm a noob on this forum it won't let me post frequently.

SGaist

Are you using a virtual environment ?

Or something like macports or brew ?

OutsourcedGuru

I'm using a virtual environment by which I mean:

source venv/bin/activate

SGaist

What version of python are you using ?

OutsourcedGuru

Python 2.7

SGaist

May I suggest to change for Python 3 ?
Python 2.7 will reached end of life next year so it's not a good idea to start a new project with it.