Travis reverting xcode to 8.x for mac osx

.travis.yml

@@ -11,15 +11,16 @@ matrix:
   - os: linux
     python: "3.8"
   - os: osx
-    osx_image: xcode11.2
-    language: shell
+    osx_image: xcode8.3
+    language: generic
 before_install:
   - if [ $TRAVIS_OS_NAME = osx ]; then brew update; fi
   - if [ $TRAVIS_OS_NAME = osx ]; then brew install openssl; fi
+#  - if [$TRAVIS_OS_NAME = osx ]; then  python -c "import fcntl; fcntl.fcntl(1, fcntl.F_SETFL, 0)"; fi
 
 install:
 #  - scripts/travis.sh pip install pip-accel
-  - scripts/travis.sh pip install -U setuptools
+  - if [ $TRAVIS_OS_NAME = osx ]; then scripts/travis.sh pip install -U "\"setuptools<45"\"; else pip install -U setuptools --upgrade ; fi
   - scripts/travis.sh pip install coveralls
   - scripts/travis.sh pip install --requirement=requirements-checks.txt
   - scripts/travis.sh pip install --requirement=requirements-tests.txt

scripts/travis.sh

@@ -1,11 +1,10 @@
 #!/bin/bash -e
-
+set -x
 if [ "$TRAVIS_OS_NAME" = osx ]; then
-  VIRTUAL_ENV="$HOME/.virtualenvs/pymodbus"
-  python3 -m venv $VIRTUAL_ENV
-#  if [ ! -x "$VIRTUAL_ENV/bin/python" ]; then
-#    virtualenv "$VIRTUAL_ENV"
-#  fi
+  VIRTUAL_ENV="$HOME/.virtualenvs/python2.7"
+  if [ ! -x "$VIRTUAL_ENV/bin/python" ]; then
+    virtualenv "$VIRTUAL_ENV"
+  fi
   source "$VIRTUAL_ENV/bin/activate"
 fi