pip install works, sudo python3 setup.py install not on A64FX, Fedora 33

...
byte-compiling build/bdist.linux-aarch64/egg/acme/wrappers/single_precision.py to single_precision.cpython-39.pyc
byte-compiling build/bdist.linux-aarch64/egg/acme/wrappers/single_precision_test.py to single_precision_test.cpython-39.pyc
byte-compiling build/bdist.linux-aarch64/egg/acme/wrappers/step_limit.py to step_limit.cpython-39.pyc
byte-compiling build/bdist.linux-aarch64/egg/acme/wrappers/video.py to video.cpython-39.pyc
creating build/bdist.linux-aarch64/egg/EGG-INFO
copying dm_acme.egg-info/PKG-INFO -> build/bdist.linux-aarch64/egg/EGG-INFO
copying dm_acme.egg-info/SOURCES.txt -> build/bdist.linux-aarch64/egg/EGG-INFO
copying dm_acme.egg-info/dependency_links.txt -> build/bdist.linux-aarch64/egg/EGG-INFO
copying dm_acme.egg-info/requires.txt -> build/bdist.linux-aarch64/egg/EGG-INFO
copying dm_acme.egg-info/top_level.txt -> build/bdist.linux-aarch64/egg/EGG-INFO
zip_safe flag not set; analyzing archive contents...
creating 'dist/dm_acme-0.2.0-py3.9.egg' and adding 'build/bdist.linux-aarch64/egg' to it
removing 'build/bdist.linux-aarch64/egg' (and everything under it)
Processing dm_acme-0.2.0-py3.9.egg
Removing /usr/local/lib/python3.9/site-packages/dm_acme-0.2.0-py3.9.egg
Copying dm_acme-0.2.0-py3.9.egg to /usr/local/lib/python3.9/site-packages
dm-acme 0.2.0 is already the active version in easy-install.pth

Installed /usr/local/lib/python3.9/site-packages/dm_acme-0.2.0-py3.9.egg
Processing dependencies for dm-acme==0.2.0
Searching for dm-tree
Reading https://pypi.org/simple/dm-tree/
Download error on https://pypi.org/simple/dm-tree/: [Errno -2] Name or service not known -- Some packages may not be found!
Couldn't find index page for 'dm-tree' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.org/simple/
Download error on https://pypi.org/simple/: [Errno -2] Name or service not known -- Some packages may not be found!
No local packages or working download links found for dm-tree
error: Could not find suitable distribution for Requirement.parse('dm-tree')

'pip3 install dm-tree' works, too.