git push heroku master: Heroku push rejected, no Cedar-supported app detected

Question

I tried running:

$ git push heroku master    
-----

Total 7121 (delta 2300), reused 6879 (delta 2228)
 !     Heroku push rejected, no Cedar-supported app de         


        

Answer 1

I struggled with this issue for a long time and the only solution was Vincent van Leeuwen's, but I didn't understand why. The problem turned out to be that I was working from a local branch other than master. So when I was running

git push heroku master

I was actually pushing

(local) master->(heroku) master

and not

(local) current_branch -> (heroku) master

as I intended. This failed because my local master branch didn't have requirements.txt, Procfile, etc.

The solution is:

git push heroku current_branch:master

See heroku docs for more.

Hope this helps.