I use ArcWelder extensively, and I just recently got a new Mac Studio computer, with the new Apple Silicon ARM chipset. I could not find a build for this, so I ended up doing my own.

The steps were fairly simple, but I was having trouble with the Python3 library and include dependencies. I don’t know if I was doing something wrong, but this is what I ended up having to do:

git clone https://github.com/FormerLurker/ArcWelderLib.git
cd ArcWelderLib
mkdir build
cd build
cmake .. -DPYTHON_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())")\
         -DPYTHON_LIBRARY=$(python3 -c "import distutils.sysconfig as sysconfig; print('{}/{}'.format(sysconfig.get_config_var('LIBDIR'), sysconfig.get_config_var('LIBRARY')))")

This produces a nice, arm64 binary.

leif@Hel ~/github/others/ArcWelderLib/build ±master⚡ » file ArcWelderConsole/ArcWelder
ArcWelderConsole/ArcWelder: Mach-O 64-bit executable arm64