Really stop compiling Cython

scripts/releases/make-manylinux

@@ -146,7 +146,16 @@ if [ -d /gevent -a -d /opt/python ]; then
     #   a tiny subset of tests)
     echo Possible Builds
     ls -l /opt/python/
-    for variant in /opt/python/cp{38,39,310,311,312}*; do
+
+    # If there is no Cython binary wheel available, don't try to build one; it takes
+    # forever! The old way of --install-option="--no-cython-compile" doesn't work because
+    # pip dropped support for it, and the "supported" way, --config-settings='--install-option="--no-cython-compile"'
+    # also doesn't work. Fortunately, Cython also reads an environment variable.
+    export NO_CYTHON_COMPILE=true
+
+    # Start echoing commands (doing it earlier is too much)
+    set -x
+    for variant in /opt/python/cp{312,38,39,310,311,312}*; do
         echo $SEP
         export PATH="$variant/bin:$OPATH"
         if [ -n "$SLOW_BUILD" ]; then
@@ -163,9 +172,8 @@ if [ -d /gevent -a -d /opt/python ]; then
         # The downside is that we must install dependencies manually.
         # NOTE: We can't upgrade ``wheel`` because ``auditwheel`` depends on
         # it, and auditwheel is installed in one of these environments.
-        # If there is no Cython binary wheel available, don't try to build one; it takes
-        # forever!
-        time python -m pip install --config-settings='--install-option="--no-cython-compile"' -U 'cython>=3.0b3; python_version < "3.12"' "Cython @ https://github.com/cython/cython/archive/37f4dcdc04547875e2836fda076f5707ec50e579.zip; python_version >= '3.12'"
+        time python -m pip install  -U 'cython>=3.0b3; python_version < "3.12"'
+        time python -m pip install -v -U "Cython @ https://github.com/cython/cython/archive/37f4dcdc04547875e2836fda076f5707ec50e579.zip; python_version >= '3.12'"
         time python -mpip install -U cffi 'greenlet >= 2.0.0; python_version < "3.12"' 'greenlet >= 3.0a1; python_version >= "3.12"' setuptools
         echo "$variant: Building wheel"
         time (python setup.py bdist_wheel)