Issue deploying to Heroku with standard/rake

[lpender]

It looks like Heroku tries to run: bundle exec rake -P in production mode when the app is deployed, and fails because the standard gem is only installed in development and test environments.

[lpender]

When trying to build a fresh Suspenders app on Heroku:

-----> Detecting rake tasks

 !
 !     Could not detect rake tasks
 !     ensure you can run `$ bundle exec rake -P` against your app
 !     and using the production group of your Gemfile.
 !     rake aborted!
 !     LoadError: cannot load such file -- standard/rake
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
 !     /tmp/build_ca4ab55b/Rakefile:1:in `<main>'
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/rake_module.rb:29:in `load'
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/rake_module.rb:29:in `load_rakefile'
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:710:in `raw_load_rakefile'
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:104:in `block in load_rakefile'
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:103:in `load_rakefile'
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:82:in `block in run'
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
 !     /tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:80:in `run'
 !     /tmp/build_ca4ab55b/bin/rake:4:in `<main>'
 !
/tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/helpers/rake_runner.rb:100:in `load_rake_tasks!': Could not detect rake tasks (LanguagePack::Helpers::RakeRunner::CannotLoadRakefileError)
ensure you can run `$ bundle exec rake -P` against your app
and using the production group of your Gemfile.
rake aborted!
LoadError: cannot load such file -- standard/rake
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
/tmp/build_ca4ab55b/Rakefile:1:in `<main>'
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/rake_module.rb:29:in `load'
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/rake_module.rb:29:in `load_rakefile'
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:710:in `raw_load_rakefile'
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:104:in `block in load_rakefile'
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:103:in `load_rakefile'
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:82:in `block in run'
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
/tmp/build_ca4ab55b/vendor/bundle/ruby/3.2.0/gems/rake-13.0.6/lib/rake/application.rb:80:in `run'
/tmp/build_ca4ab55b/bin/rake:4:in `<main>'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/ruby.rb:967:in `rake'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails4.rb:69:in `block in run_assets_precompile_rake_task'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/base.rb:175:in `log'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails4.rb:63:in `run_assets_precompile_rake_task'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/ruby.rb:103:in `block in compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/ruby.rb:988:in `allow_git'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/ruby.rb:96:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails2.rb:55:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails3.rb:37:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails4.rb:30:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails6.rb:17:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/bin/support/ruby_compile:19:in `block in <main>'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/base.rb:175:in `log'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/bin/support/ruby_compile:18:in `<main>'
 !     Push rejected, failed to compile Ruby app.
 !     Push failed

[stevepolitodesign]

Thank you for raising this issue. I created a new suspenders app locally, and was able to run both RACK_ENV=production bundle exec rake -P and RAILS_ENV=production bundle exec rake -P locally without issue.

I did stumble upon this StackOverflow post that suggests this issue has to do with specific bundler versions, although this Heroku article claims that's not an issue anymore.

For me, I was running version 2.4.3 of bundler.

# Gemfile.lock
BUNDLED WITH
   2.4.3

What version are you running?

[stevepolitodesign]

Closed by #1135 and #1186.