The Arch User Repository (AUR) has experienced a series of attacks where malicious actors created new accounts to adopt orphaned packages and push harmful updates. These updates installed malware on users' systems, prompting maintainers to respond rapidly to mitigate the ongoing threats.

NixOS is valued for its deterministic and reproducible functional package manager, Nix. Users can construct and rebuild an entire operating system by inputting Nix DSL, allowing for incremental changes and precise control over the system.