Specify the package name to install with the os name in .test_unix_purepy_pkg ci job.

.gitlab-ci.yml

@@ -695,7 +695,8 @@ test_linux_pkg_release:
     - $JOB_PYTHON -m venv test_pyfaust-$CI_COMMIT_TAG
     - source test_pyfaust-$CI_COMMIT_TAG/bin/activate
     - PYVER=$($JOB_PYTHON --version | awk '{print $2}' | sed -e 's/\.//g;s/\(..\).*/\1/')
-    - $JOB_PYTHON -m pip install --upgrade build/wrapper/python/dist/pyfaust-$CI_COMMIT_TAG-*$PYVER*.whl
+    - SYS=$(if uname -a | grep -q Darwin; then echo macosx; else echo linux; fi)
+    - $JOB_PYTHON -m pip install --upgrade build/wrapper/python/dist/pyfaust-$CI_COMMIT_TAG-*$PYVER*$SYS*.whl
     - $JOB_PYTHON -c "import pyfaust; print(pyfaust.version()); print(pyfaust.rand(5,5).toarray());"
     - $JOB_PYTHON -c "import pyfaust.tests; pyfaust.tests.run_tests('cpu', 'double')"
     - $JOB_PYTHON -c "import pyfaust.tests; pyfaust.tests.run_tests('cpu', 'float')"