[3.10] Pin `setuptools==81` to avoid `pkg_resources` removal (#144781)

diff --git a/Doc/Makefile b/Doc/Makefile
index 9e72b31ab492a250547d83da08ecbf0d1283c539..ac8f909a1f9143f060857f5c017a2bdfebfe2a89 100644 (file)
--- a/Doc/Makefile
+++ b/Doc/Makefile
@@ -150,7 +150,7 @@ venv:
                echo "To recreate it, remove it first with \`make clean-venv'."; \
        else \
                $(PYTHON) -m venv $(VENVDIR); \
-               $(VENVDIR)/bin/python3 -m pip install -U pip setuptools; \
+               $(VENVDIR)/bin/python3 -m pip install -U pip setuptools==81; \
                $(VENVDIR)/bin/python3 -m pip install -r requirements.txt; \
                echo "The venv has been created in the $(VENVDIR) directory"; \
        fi