Cannot install on Big Sur 11.3

[cozymore]

Cannot install because of read-only filesystem. How about local-only installation that will not require root privileges?
Installation logs:

Password:
running install
running bdist_egg
running egg_info
writing matrixcli.egg-info/PKG-INFO
writing dependency_links to matrixcli.egg-info/dependency_links.txt
writing top-level names to matrixcli.egg-info/top_level.txt
reading manifest file 'matrixcli.egg-info/SOURCES.txt'
writing manifest file 'matrixcli.egg-info/SOURCES.txt'
installing library code to build/bdist.macosx-11-arm64/egg
running install_lib
warning: install_lib: 'build/lib' does not exist -- no Python modules to install

installing package data to build/bdist.macosx-11-arm64/egg
running install_data
creating /etc/matrixcli
copying config.py -> /etc/matrixcli
creating /lib
error: could not create '/lib': Read-only file system

[scramblr]

Same issue. Lots of us are looking for guidance...