Multipass is a production-grade virtual machine orchestration tool that provides a daemon (multipassd) with a gRPC API and multiple clients (CLI, Flutter GUI). The daemon manages the full VM lifecycle—launch, start, stop, suspend, snapshot, clone, delete—across several hypervisor backends: QEMU/KVM (Linux/macOS), Apple VZ (macOS), Hyper‑V/HCS (Windows), and VirtualBox (legacy). The codebase demonstrates a client–server architecture where the CLI binary dispatches commands to the daemon via gRPC using protobuf messages, and output is formatted in table/JSON/CSV/YAML. All VMs are provisioned with cloud‑init, and images are fetched from Ubuntu's SimpleStreams or custom HTTP sources with caching and hash verification. Network bridges, DNSMasq on Linux, and HCN/HCS on Windows provide connectivity; mounts are handled via SSHFS (or SMB on Windows). The design includes a plugin‑style backtracking for hypervisors, a persistent settings system backed by QSettings and JSON files, an extensible logging framework (journald, syslog, Windows Event Log), and a new‑release monitor that polls GitHub releases. The repository also contains a Rust component for petname generation and logging, a Python distro‑scraper that periodically refreshes cloud image metadata, and a comprehensive test suite with C++ unit tests (Google Test/Mock) and Python integration tests (pytest, pexpect). Overall, it is a mature, cross‑platform application with strong engineering practices but carries some technical debt from legacy backends and ongoing migrations.
This repository provides a comprehensive set of scripts, configuration files, and precompiled bootloader components to run macOS as a guest operating system on Linux hosts using QEMU/KVM and the OpenCore bootloader. It is not a traditional application but rather an infrastructure-as-code project that automates the creation of a virtual Hackintosh environment. The codebase includes a Python script (`fetch-macOS-v2.py`) to download macOS recovery images from Apple's servers with cryptographic verification, shell scripts to launch QEMU with the appropriate CPU flags, firmware, and device emulation, and a set of OpenCore EFI binaries (kexts, drivers, ACPI tables, icons) tailored for macOS compatibility. The project also documents GPU passthrough, USB passthrough, kernel debugging, and reverse engineering of macOS VM detection. While the repository is highly popular and actively maintained, the code quality is uneven: many shell scripts are boilerplate-heavy with hardcoded paths, and the prebuilt binaries are opaque, making the project more of a curated recipe collection than a polished software product. The most reusable components are the macOS downloader script and the OpenCore disk image builder, which can be extracted and adapted for other virtualization workflows.