py36-cffi @1.14.6: Library not loaded: /opt/local/lib/libffi.7.dylib

[odysseus9672 (Sean Lake)]

Attempting to upgrade py36-cffi, and the build fails. Here's the part of the build log I think is relevant:

:debug:build system:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-cffi/py36-cffi/work/cffi-1.14.6" && /opt/local/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 setup.py --no-user-cfg build -j12 
:info:build Traceback (most recent call last):
:info:build   File "setup.py", line 154, in <module>
:info:build     from setuptools import setup, Distribution, Extension
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/__init__.py", line 18, in <module>
:info:build     from setuptools.dist import Distribution
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/dist.py", line 38, in <module>
:info:build     from setuptools import windows_support
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/windows_support.py", line 2, in <module>
:info:build     import ctypes
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ctypes/__init__.py", line 7, in <module>
:info:build     from _ctypes import Union, Structure, Array
:info:build ImportError: dlopen(/opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/lib-dynload/_ctypes.cpython-36m-darwin.so, 2):
:info:build   Referenced from: /opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/lib-dynload/_ctypes.cpython-36m-darwin.so
:info:build   Reason: image not found
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_python_py-cffi/py36-cffi/work/cffi-1.14.6" && /opt/local/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 setup.py --no-user-cfg build -j12 

[odysseus9672 (Sean Lake)]

Forgot to add: this is on OS X 10.15.7 with Xcode and command line tools 11.5.

[reneeotten (Renee Otten)]

this is likely a side-effect of 63437, after the update of {{libffi}}}. Until that is fixed, you can do sudo port selfupdate && sudo port upgrade outdated - that will likely tell you at the end that some ports are broken and need to be rebuild. Doing that locally on your computer should -hopefully- get you back to working situation.

[ryandesign (Ryan Carsten Schmidt)]

It's not a side effect of #63437; it is #63437.