In 23.05 (the latest release) `buildFHSEnv` was added, which creates an FHS environment inside of a bubblewrap sandbox. https://nixos.org/manual/nixpkgs/stable

In 23.05 (the latest release) `buildFHSEnv` was added, which creates an FHS environment inside of a bubblewrap sandbox. https://nixos.org/manual/nixpkgs/stable/#sec-fhs-environments https://nixos.org/manual/nixpkgs/stable/#sec-fhs-environment... ETA Code (note control over namespaces available for "unshare"): https://github.com/NixOS/nixpkgs/blob/aae1f384fdaecfbeba100c02f483b7cadb9ca1d6/pkgs/build-support/build-fhsenv-bubblewrap/default.nix https://github.com/NixOS/nixpkgs/blob/aae1f384fdaecfbeba100c...