Don’t require `ca-derivations` when `__contentAddressed = false`
Don’t require `ca-derivations` when `__contentAddressed = false`

If we explicitely opt-out of it, there’s no need to require the
experimental feature

NixOS/nix,NixOS/nix,rycee/nix,NixOS/nix,NixOS/nix,rycee/nix,rycee/nix,rycee/nix,NixOS/nix,rycee/nix