# Back > An extremely simple git issue tracking system. Inspired by tvix's panettone. ## Usage Currently, `back` only visualizes a `git-bug` repository. As such it takes exactly one argument, being the repository to visualize. The server is than started at `http://127.0.0.1:8000` and provides access to the issues (bugs) tracked via `git-bug`. ### Note `back` needs write access to the repository, because of internal `gix` and `git` object reasons. ## Relevant Environment Variables ### `ROCKET_PORT` > Default: 8000 This is the port the server binds to. ### `SOURCE_CODE_REPOSITORY_URL` The URL to the back's source. ## Licensing This project complies with the REUSE v3.3 specification. This means that every file clearly states its copyright.