I\'m wondering if there is a way to force Heroku to recompile the slug without pushing new commits and/or updating the config variables.
Why would I want to do this?
Update: heroku repo:rebuild has been removed.
Heroku has a Build API you can use, see: Building and Releasing Using the API
You can use the repo:rebuild command if the heroku-repo add-on.
heroku repo:rebuild -a appname
https://github.com/heroku/heroku-repo