Merge pull request #7962 from Yardanico/test-ci

Fixed Travis CI for macOS

.travis.yml

@@ -25,6 +25,8 @@ before_install:
 
 before_script:
   - set -e
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then unset -f cd; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then shell_session_update() { :; }; fi
   - git clone --depth 1 https://github.com/nim-lang/csources.git
   - cd csources
   - sh build.sh