Does not compile on Raspberry Pi

[mark-orion]

This project looks great, but it does not seem to compile on a Raspberry Pi. There do not seem to be any skia binaries for armhf architecture.
I am not sure if there is a workaround for this (compiling everything from source ?).

--- stderr
Traceback (most recent call last):
File "skia/bin/fetch-gn", line 26, in
cpu = {'amd64': 'amd64', 'arm64': 'arm64', 'x86_64': 'amd64', 'aarch64': 'arm64'}[platform.machine().lower()]
KeyError: 'armv7l'
Traceback (most recent call last):
File "skia/tools/git-sync-deps", line 266, in
exit(main(sys.argv[1:]))
File "skia/tools/git-sync-deps", line 261, in main
os.path.join(os.path.dirname(deps_file_path), 'bin', 'fetch-gn')])
File "/usr/lib/python2.7/subprocess.py", line 190, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/usr/bin/python2', 'skia/bin/fetch-gn']' returned non-zero exit status 1
thread 'main' panicked at 'skia/tools/git-sync-deps failed', /home/pi/.cargo/registry/src/github.com-1285ae84e5963aae/skia-bindings-0.41.0/build_support/skia/config.rs:321:9
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

[atinm]

I have a pull request that allows me to build for Raspberry Pi 3B+ and I was able to run the image under Raspbian 64-bit with a Pisound card hooked up to it - it works, though I am not sure a Raspberry Pi 3B+ is going to cut it, getting a lot of slow downs/glitches where the UI doesn't respond to mouse clicks. Might work better with the FCB1010 once I hook that up.