This post guides you through building a simple ActivityPub bot in Python using the `apkit` library. The bot listens for mentions and schedules reminders for users. It covers setting up the project, generating cryptographic keys for secure communication, defining the bot's identity as an ActivityPub Actor, and initializing the `apkit` server. The tutorial walks through the core logic for parsing reminder commands, sending notifications, and defining necessary web endpoints like `/actor` and `/inbox`. It also details how to handle incoming activities, such as `Follow` and `Create` events, and how to run the application using `uvicorn`. While the example uses in-memory storage for simplicity, the post suggests improvements like persistent storage and robust task queuing for production environments. This tutorial provides a solid foundation for building more complex ActivityPub applications.

When installing patched versions of Misskey and Sharkey on Fedora 42, compilation errors related to `uint8_t` and `state` may arise due to the default GCC version. This guide provides a workaround by compiling and using a newer version of GCC/G++. The process involves installing necessary dependencies, downloading and extracting the GCC source code, configuring the build with specific flags, and compiling GCC using the `make` command. After installation, the guide details how to modify the `pnpm install` command for Misskey and Sharkey to use the newly compiled GCC, ensuring a successful installation. By following these steps, users can resolve the compilation errors and properly install Misskey and Sharkey on Fedora 42.