let domain = "*.test.nix"; domainSanitized = "_.test.nix"; in { inherit domain; ca = { cert = ./ca.cert.pem; key = ./ca.key.pem; }; "${domain}" = { cert = ./. + "/${domainSanitized}.cert.pem"; key = ./. + "/${domainSanitized}.key.pem"; }; }