limited travis

.travis.yml

@@ -34,38 +34,20 @@ matrix:
       <<: *linux-setup-steps
       script: pipenv run -v test -f make,ninja
 
-    - name: "Linux: test with make and ninja on Python 2.7"
-      python: '2.7'
-      <<: *linux-setup-steps
-      script: pipenv run -v test -f make,ninja
-
-    - name: "Windows: test with mocks on Python 3"
-      <<: *windows-setup-steps
-      env:
-        - PATH=/c/Python37:$PATH
-      before_install: choco install python3
-      script: python -m pipenv run -v test -f make-mock,msvs-mock
-
-    - name: "Windows: test with mocks on Python 2"
-      <<: *windows-setup-steps
-      env:
-        - PATH=/c/Python27:$PATH
-      before_install: choco install python2
-      script: python -m pipenv run -v test -f make-mock,msvs-mock
-
     - name: "macOS: test with make and ninja on Python 3.7"
       <<: *osx-setup-steps
       script: pipenv run -v test -f make,ninja
 
-    - name: "lint with Python 2.7"
-      python: '2.7'
-      <<: *linux-setup-steps
-      script: pipenv run -v lint
-
-    - name: "lint with Python 3.7"
-      python: '3.7'
-      <<: *linux-setup-steps
-      script: pipenv run -v lint
+    - name: "macOS: XCode10.2 test with make and ninja on Python 3.7"
+      os: osx
+      osx_image: xcode10.2  # provides Python 3.7.2
+      language: cpp  # 'language: python' is not yet supported on macOS
+      install:
+        - HOMEBREW_NO_AUTO_UPDATE=1 brew install ninja
+        - pip3 install --upgrade pip pipenv
+        - pipenv install --dev
+        - pipenv install PyObjC  # This is not in the Pipfile because it breaks other platforms https://github.com/pypa/pipenv/issues/3187
+      script: pipenv run -v test -f make,ninja
 
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