successfully installed but failed to launch radian

I installed radian by pip3 install radian but it does not run as expected and I got the following error.

chrislam@ChrisLams-MBP GendooLab % radian
Traceback (most recent call last):
  File "/opt/homebrew/bin/radian", line 8, in <module>
    sys.exit(main())
  File "/opt/homebrew/lib/python3.9/site-packages/radian/__init__.py", line 11, in main
    from rchitect.utils import Rhome, rversion
  File "/opt/homebrew/lib/python3.9/site-packages/rchitect/__init__.py", line 1, in <module>
    from .setup import init, loop
  File "/opt/homebrew/lib/python3.9/site-packages/rchitect/setup.py", line 6, in <module>
    from rchitect._cffi import ffi, lib
ImportError: dlopen(/opt/homebrew/lib/python3.9/site-packages/_cffi_backend.cpython-39-darwin.so, 2): no suitable image found.  Did find:
        /opt/homebrew/lib/python3.9/site-packages/_cffi_backend.cpython-39-darwin.so: mach-o, but wrong architecture
        /opt/homebrew/lib/python3.9/site-packages/_cffi_backend.cpython-39-darwin.so: mach-o, but wrong architecture

I am on a M1 Mac BigSur

[randy3k]

Please remove cffi first. The issue was caused by a wrong installation of cffi. Installing from source should fix the issue.

[fdq09eca]

@randy3k Bingo!

chrislam@ChrisLams-MBP ~ % pip3 uninstall radian
Found existing installation: radian 0.5.11
Uninstalling radian-0.5.11:
  Would remove:
    /opt/homebrew/bin/radian
    /opt/homebrew/lib/python3.9/site-packages/radian-0.5.11-py3.9.egg-info
    /opt/homebrew/lib/python3.9/site-packages/radian/*
Proceed (y/n)? y
  Successfully uninstalled radian-0.5.11
chrislam@ChrisLams-MBP ~ % pip3 uninstall cffi
Found existing installation: cffi 1.14.5
Uninstalling cffi-1.14.5:
  Would remove:
    /opt/homebrew/lib/python3.9/site-packages/_cffi_backend.cpython-39-darwin.so
    /opt/homebrew/lib/python3.9/site-packages/cffi-1.14.5.dist-info/*
    /opt/homebrew/lib/python3.9/site-packages/cffi/*
Proceed (y/n)? y
  Successfully uninstalled cffi-1.14.5
chrislam@ChrisLams-MBP ~ % pip3 install --no-binary :all: radian
Collecting radian
  Using cached radian-0.5.11.tar.gz (48 kB)
Requirement already satisfied: rchitect<0.4.0,>=0.3.30 in /opt/homebrew/lib/python3.9/site-packages (from radian) (0.3.32)
Requirement already satisfied: lineedit<0.2.0,>=0.1.5 in /opt/homebrew/lib/python3.9/site-packages (from radian) (0.1.6)
Requirement already satisfied: six>=1.9.0 in ./Library/Python/3.9/lib/python/site-packages (from radian) (1.15.0)
Requirement already satisfied: pygments>=2.5.0 in ./Library/Python/3.9/lib/python/site-packages (from radian) (2.8.0)
Requirement already satisfied: wcwidth in ./Library/Python/3.9/lib/python/site-packages (from lineedit<0.2.0,>=0.1.5->radian) (0.2.5)
Collecting cffi>=1.10.0
  Using cached cffi-1.14.5.tar.gz (475 kB)
Requirement already satisfied: pycparser in /opt/homebrew/lib/python3.9/site-packages (from cffi>=1.10.0->rchitect<0.4.0,>=0.3.30->radian) (2.20)
Skipping wheel build for radian, due to binaries being disabled for it.
Skipping wheel build for cffi, due to binaries being disabled for it.
Installing collected packages: cffi, radian
    Running setup.py install for cffi ... done
    Running setup.py install for radian ... done
Successfully installed cffi-1.14.5 radian-0.5.11
WARNING: You are using pip version 21.0.1; however, version 21.1.2 is available.
You should consider upgrading via the '/opt/homebrew/opt/python@3.9/bin/python3.9 -m pip install --upgrade pip' command.
chrislam@ChrisLams-MBP ~ % radian
R version 4.1.0 (2021-05-18) -- "Camp Pontanezen"
Platform: aarch64-apple-darwin20 (64-bit)

r$>