Warning: no DISPLAY variable so Tk is not available

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Warning: no DISPLAY variable so Tk is not available #186

Open maurolepore opened 5 years ago

maurolepore commented 5 years ago

checking whether package ‘fgeo.krig’ can be installed ... WARNING
Found the following significant warnings:
  Warning: no DISPLAY variable so Tk is not available

I fixed this by adding this to .travis.yml (solution from https://github.com/travis-ci/travis-ci/issues/6987)

before_install:
- export DISPLAY=:99.0