变形 Morph是用于管理现有NixOS主机的工具-基本上是围绕nix-build ， nix copy ， nix-env ， /nix/store/.../bin/switch-to-configuration nix-env /nix/store/.../bin/switch-to-configuration nix-env /nix/store/.../bin/switch-to-configuration nix-env /nix/store/.../bin/switch-to-co