how set up Travis with GTK so I can test with `racket/gui`?

[Matthew Butterick]

Not something I've done before with Travis, and my first few attempts have failed.

A link to an example would be great. Thanks.

[Asumu Takikawa]

On 2016-10-10 11:12:43 -0700, Matthew Butterick wrote:
> Not something I've done before with Travis, and my first few attempts have
> failed.

My drracket-vim-tool package has some unit tests in #lang racket/gui. The
travis file for that is here:

https://github.com/takikawa/drracket-vim-tool/blob/master/.travis.yml

I think the key parts for you are the first two lines in `before_install`.

Cheers,
Asumu