numpy (needed by cgal) started having the same issue with linking as python, which makes upgrade and thus the entire build fail on macOS. Instead of playing more tricks with linking/unlinking, just uninstall the problematic packages (and those dragging them in) before doing anything else. Signed-off-by: Andrea Bolognani <abologna(a)redhat.com&gt; --- Technically a build breaker, but since I'm changing the approach I'd rather wait for an explicit ACK before pushing. .travis.yml | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/.travis.yml b/.travis.yml index d3f72d46f3..140072b801 100644 --- a/.travis.yml +++ b/.travis.yml @@ -21,10 +21,10 @@ matrix: - compiler: clang os: osx before_install: + - brew uninstall python mercurial postgis sfcgal cgal gdal - brew update - - brew unlink python - brew upgrade - - brew install rpcgen yajl + - brew install python rpcgen yajl script: # We can't run make distcheck/syntax-check because they # fail on macOS, but doing 'install' and 'dist' gives us