FreeBSD gpart vs Nix

FreeBSD gpart is the operating system’s utility for managing disk partitioning through the GEOM class. It can create, add, delete, modify, resize, inspect, and attribute partitions, using schemes including APM, BSD, BSD64, LDM, GPT, and MBR. Adding a partition can request alignment for its start offset and size. Bootcode can be written into partitioning metadata or a specified partition. Dump and restore support saving a partition table and cloning it to multiple providers. Changes may remain pending until commit or be reversed with undo. Recover addresses corrupt scheme metadata, but choosing the wrong provider can damage another GEOM class’s metadata. Show reports partition details and supports libxo machine-readable output. Gpart is included in FreeBSD, which is free and offers self-hosted installation media for multiple architectures.

Nix is a free package management and system configuration tool for creating reproducible, declarative systems. It builds packages in isolation to avoid undeclared dependencies and help keep builds consistent across machines. Users can define and share development and build environments across projects and languages, install software from URLs or source code, and use virtual machines for integration testing. Nix supports dependency resolution, lockfiles, workspaces and offline installation; its package formats include Nix expressions, derivations and flakes. The Nix Packages collection offers over 140,000 packages. The wider ecosystem supports remote builds and deployments, binary caches, cross compilation, atomic upgrades and rollbacks to earlier package versions. Nix runs on Linux and macOS, and on Windows through WSL2; multi-user Windows installation requires WSL systemd support. Documentation includes guides for GitHub Actions, Docker images, Terraform deployment, SSH provisioning and distributed builds. Nix is aimed at people familiar with command-line interfaces and plain-text editors, including developers, test engineers, DevOps engineers, system administrators, data scientists, students and open-source enthusiasts. It has no paid plan listed.