workaround build-time dependency conflict with pyvinecopulib (#1325)

Author: slayoo

.github/workflows/tests+artifacts+pypi.yml

@@ -198,11 +198,6 @@ jobs:
       - if: steps.cache.outputs.cache-hit != 'true'
         run: |
           python -m pip uninstall -y jupyterlab-server # https://github.com/pypa/pip/issues/6275
-          
-          python -m pip install "setuptools==64.0.0"
-          python -m pip install pyvinecopulib # requires newer setuptools
-          python -m pip install "setuptools==56.0.0"
-          
           python -m pip install -e . -e ./examples
           python -m pip install -r tests/devops_tests/requirements.txt
       - if: steps.cache.outputs.cache-hit != 'true'

examples/setup.py

@@ -32,7 +32,11 @@ def get_long_description():
         "seaborn",
         "numdifftools",
     ]
-    + (["pyvinecopulib", "vtk"] if platform.architecture()[0] != "32bit" else []),
+    + (
+        ["pyvinecopulib" + "==0.6.4" if CI else "", "vtk"]
+        if platform.architecture()[0] != "32bit"
+        else []
+    ),
     extras_require={
         "tests": [
             "pytest",