set-default-env doesn't set variables if they already exist

cyberdelia / heroku-geo-buildpack

Geo libraries for Heroku

https://github.com/heroku/heroku-geo-buildpack

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set-default-env doesn't set variables if they already exist #48

Open kwlockwo opened 6 years ago

kwlockwo commented 6 years ago

If LIBRARY_PATH, LIBRARY_PATH, CPATH or PATH are already set either via config var or through some other profile script then set-default-env will not set them to the given values.