App not compatible with buildpack: error during deploying django app to heroku

Question

I am trying to deploy django app to heroku. During attempt of deployment, I'm getting an error: App not compatible with buildpack I'm doing this the first time and I have no idea what I'm doing wrong. May be my master branch is on the venw directory and the directory of the app is on the main branch. I have tried use call: git push heroku main on the main branch but it doesn't work. My main branch contains files requirements.txt, procfile and runtime.txt. It is necessary to push the app to heroku from the master branch or the main branch is also possible? Any idea how to solve my problem?

My git bash logs below:

ggb@DESKTOP-PNHHOHJ MINGW64 /c/projekty/tabele/tabenv (master) $ ls Include/ Lib/ pyvenv.cfg requiremenrs.txt runtime.txt Scripts/ tabele/ (tabenv) gg@DESKTOP-PNHHOHJ MINGW64 /c/projekty/tabele/tabenv (master) $ git push heroku master Enumerating objects: 9191, done. Counting objects: 100% (9191/9191), done. Delta compression using up to 4 threads Compressing objects: 100% (5820/5820), done. Writing objects: 100% (9191/9191), 17.71 MiB | 4.76 MiB/s, done. Total 9191 (delta 2299), reused 9184 (delta 2296), pack-reused 0 remote: Compressing source files... done. remote: Building source: remote: remote: -----> Building on the Heroku-20 stack remote: -----> App not compatible with buildpack: https://buildpack-registry.s3.amazonaws.com/buildpacks/heroku/python.tgz remote: More info: https://devcenter.heroku.com/articles/buildpacks#detection-failure remote: remote: ! Push failed remote: ! remote: ! ## Warning - The same version of this code has already been built: 369abf675a4a69d7c758eabf0cdfa0c0b8711a39 remote: ! remote: ! We have detected that you have triggered a build from source code with version 369abf675a4a69d7c758eabf0cdfa0c0b8711a39 remote: ! at least twice. One common cause of this behavior is attempting to deploy code from a different branch. remote: ! remote: ! If you are developing on a branch and deploying via git you must run: remote: ! remote: ! git push heroku :main remote: ! remote: ! This article goes into details on the behavior: remote: ! https://devcenter.heroku.com/articles/duplicate-build-version remote: remote: Verifying deploy... remote: remote: ! Push rejected to thawing-falls-31558. remote: To https://git.heroku.com/thawing-falls-31558.git ! [remote rejected] master -> master (pre-receive hook declined) error: failed to push some refs to 'https://git.heroku.com/thawing-falls-31558.git' (tabenv) gg@DESKTOP-PNHHOHJ MINGW64 /c/projekty/tabele/tabenv (master) $

gg@DESKTOP-PNHHOHJ MINGW64 /c/projekty/tabele/tabenv/tabele (main)
$ ls
db.sqlite3  manage.py*  requiremenrs.txt  staticfiles/
formula/    Procfile    runtime.txt       tabele/
(tabenv)
gg@DESKTOP-PNHHOHJ MINGW64 /c/projekty/tabele/tabenv/tabele (main)
$ git push heroku main
Enumerating objects: 155, done.
Counting objects: 100% (155/155), done.
Delta compression using up to 4 threads
Compressing objects: 100% (144/144), done.
Writing objects: 100% (155/155), 177.22 KiB | 2.27 MiB/s, done.
Total 155 (delta 62), reused 0 (delta 0), pack-reused 0
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Building on the Heroku-20 stack
remote: -----> App not compatible with buildpack: https://buildpack-registry.s3.amazonaws.com/buildpacks/heroku/python.tgz
remote:        More info: https://devcenter.heroku.com/articles/buildpacks#detection-failure
remote:
remote:  !     Push failed
remote:  !
remote:  ! ## Warning - The same version of this code has already been built: eaefbfee8a53854c985b523ac2371f3881297e6d
remote:  !
remote:  ! We have detected that you have triggered a build from source code with version eaefbfee8a53854c985b523ac2371f3881297e6d
remote:  ! at least twice. One common cause of this behavior is attempting to deploy code from a different branch.
remote:  !
remote:  ! If you are developing on a branch and deploying via git you must run:
remote:  !
remote:  !     git push heroku <branchname>:main
remote:  !
remote:  ! This article goes into details on the behavior:
remote:  !   https://devcenter.heroku.com/articles/duplicate-build-version
remote:
remote: Verifying deploy...
remote:
remote: !       Push rejected to pure-earth-78865.
remote:
To https://git.heroku.com/pure-earth-78865.git
 ! [remote rejected] main -> main (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/pure-earth-78865.git'
(tabenv)

Tin Nguyen Tin Nguyen · Accepted Answer · 2021-03-01T11:53:43

remote: -----> Building on the Heroku-20 stack
remote: -----> App not compatible with buildpack: https://buildpack-registry.s3.amazonaws.com/buildpacks/heroku/python.tgz
remote:        More info: https://devcenter.heroku.com/articles/buildpacks#detection-failure

The detect script for the Python buildpack can be found here: https://github.com/heroku/heroku-buildpack-python/blob/main/bin/detect

if [ ! -f "$BUILD_DIR/requirements.txt" ] && [ ! -f "$BUILD_DIR/setup.py" ] && [ ! -f "$BUILD_DIR/Pipfile" ]; then
  exit 1
fi

It checks for a presence of requirements.txt, setup.py or Pipfile in the root directory of your git repo. It is not present in your case thus it is failing.

App not compatible with buildpack: error during deploying django app to heroku

1 Answers