Hi Guix, For safety reasons I am asking: ------------------------------------------------------------------- The package `nss-certs' is now included in `%base-packages', the default value of the default value of the `packages' field in the `operating-system' composite type. If you are a user of Guix System, please add in your operating system configuration file no longer `(specification->package “nss-certs”)' to `%base-packages' in your operating system configuration file. ---------------------------------------------------------------------- This is in my config.scm: (packages (append (list (specification->package "nss-certs")) %base-packages)) What should it look like now? Do I have to delete everything? thanks for help Gottfried