clean up after our previous build.

.gitlab-ci.yml

@@ -37,11 +37,11 @@ MacOS:
   stage: build
   allow_failure: true
   script:
-    #- macos_qt_formula=qt
+    - sudo rm -fr /usr/local/Openmw.app  # clean up after previous build
     - CI/before_install.osx.sh
     - CI/before_script.osx.sh
     - cd build; make -j2
-    - make install
+    - sudo make install
   artifacts:
     paths:
       - /usr/local/OpenMW.app