system.etc.overlay.mutable
NixOS option
Whether to mount /etc mutably (i.e. read-write) or immutably (i.e. read-only). If this is false, only the immutable lowerdir is mounted. If it is true, a writable upperdir is mounted on top.
type: booleanDefault
declared in: nixos/modules/system/etc/etc.nixView source on NixOS/nixpkgs →true