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Heroku CI doesn't effectively test migrations

Status: Open.

#1710 In heroku/heroku-buildpack-ruby;

· schneems opened on Feb 2, 2026

Investigate MAKEFLAGS for faster dependency installs

Status: Open.

#1513 In heroku/heroku-buildpack-ruby;

· schneems opened on Nov 7, 2024

Alternative compression formats for downloads

Status: Open.

#1500 In heroku/heroku-buildpack-ruby;

· schneems opened on Oct 8, 2024

Feature Request: Support for Jemalloc w/o Separate Build Pack

Status: Open.

#1487 In heroku/heroku-buildpack-ruby;

· ksylvest opened on Jul 22, 2024

cp: non-portable warning

Status: Open.

#1485 In heroku/heroku-buildpack-ruby;

· csuhta opened on Jul 12, 2024

Remove unused logging code

Status: Open.

#1470 In heroku/heroku-buildpack-ruby;

· schneems opened on Jun 20, 2024

Upstream bundler change removes credentials from Gemfile.lock, breaking Heroku build process

Status: Open.

#1460 In heroku/heroku-buildpack-ruby;

· nertzy opened on May 31, 2024

Rails builds fail if BUNDLE_WITHOUT="'development:test'" (note the extra quotes)

Status: Open.

#1443 In heroku/heroku-buildpack-ruby;

· schneems opened on Apr 18, 2024

ruby required for compiling webpack assets in rails build, missing from nodejs buildpack and stack 22

Status: Open.

#1433 In heroku/heroku-buildpack-ruby;

· neontuna opened on Mar 13, 2024

Possible Bundler 2.5.6 Issues

Status: Open.

#1432 In heroku/heroku-buildpack-ruby;

· jarednorman opened on Mar 5, 2024

JRuby warns to use a more recent version, but it's blank

Status: Open.

#1370 In heroku/heroku-buildpack-ruby;

· schneems opened on Mar 7, 2023

Having rack gem is not a guarantee for having rackup executable (since Rack 3)

Status: Open.

#1356 In heroku/heroku-buildpack-ruby;

· dentarg opened on Jan 2, 2023