ci(python): pin setuptools below 81 (#148)

Pin setuptools<81 in CI workflows and ReadTheDocs
configuration. This is because the recent setuptools
81.0.0 upgrade removed the pkg_resources module that
is needed at runtime by some dependencies.

Author: tiborsimko

.github/workflows/ci.yml

@@ -133,7 +133,7 @@ jobs:
 
       - name: Install Python dependencies
         run: |
-          pip install --upgrade pip setuptools py
+          pip install --upgrade pip 'setuptools<81' py
           pip install -e .[all]
 
       - name: Run Sphinx documentation with doctests
@@ -156,7 +156,7 @@ jobs:
 
       - name: Install Python dependencies
         run: |
-          pip install --upgrade pip setuptools py
+          pip install --upgrade pip 'setuptools<81' py
           pip install twine wheel
           pip install -e .[all]
 

docs/requirements.txt

@@ -4,4 +4,5 @@
 # REANA is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
 
+setuptools<81
 -e .[all]

tox.ini

@@ -18,6 +18,7 @@ envlist =
 deps =
     pytest
     pytest-cov
+    setuptools<81
 commands =
     pytest {posargs}
 package =