This is the official Heroku buildpack for Python applications. It implements the standard buildpack lifecycle (detect, compile, release, report) to install a Python runtime and manage dependencies using pip, pipenv, poetry, or uv. It handles Django collectstatic, NLTK corpora downloads, user-supplied hooks (pre/post compile), and Heroku CI. The codebase is a collection of modular shell scripts with a consistent library pattern, extensive integration tests via Hatchet/RSpec, and support for multiple Heroku stacks. It is actively maintained, with Dependabot for dependency updates and CI workflows for every commit. The architecture is straightforward: each lifecycle phase is a standalone script that sources reusable libraries from lib/. While the core logic is specific to Heroku's platform, the library functions (e.g., caching, version resolution, build data reporting) demonstrate good shell scripting practices and could be adapted for other build systems.
This is a barebones PHP application designed as a getting-started template for deploying to Heroku. It uses the Slim 4 framework with PHP-DI dependency injection, Twig templating, and Monolog logging. The application has a single route (GET /) that renders a static landing page with links to Heroku documentation. The codebase is minimal and clean, following modern PHP practices, but it is intentionally simple—essentially boilerplate for a 'Hello World' style demo. There is no complex business logic, database interaction, or reusable components beyond the standard Slim application bootstrap pattern. The repository serves as a reference for Heroku's PHP deployment workflow and is not intended for production use.