The package description for fwupd looks for polkit actions in the polkit output. There are multiple ways to patch this. --8<---------------cut here---------------start------------->8--- (add-before 'configure 'set-polkit-rules-dir ;; Locate actions in our {output,etc-dir}, not that of the polkit input. (lambda _ (setenv "PKG_CONFIG_POLKIT_GOBJECT_1_ACTIONDIR" ;; This makes it 'Just Work': ;; (string-append #$output "/share/polkit-1/actions") ;; This only makes it work when we extend polkit-service-type: (string-append "/etc/polkit-1/actions") ))) --8<---------------cut here---------------end--------------->8--- Example service definition: --8<---------------cut here---------------start------------->8--- (define (fwupd-shepherd-service package) "Return a Shepherd service to start fwupd." (list (shepherd-service (requirement '(dbus-system)) (provision '(fwupd)) (start #~(make-forkexec-constructor (list #$(file-append package "/libexec/fwupd/fwupd")))) (stop #~(make-kill-destructor))))) (define-public fwupd-service-type (service-type (name 'fwupd) (description "Setup the firmware update deamon.") (default-value fwupd) (extensions (list (service-extension profile-service-type list) (service-extension polkit-service-type list) (service-extension dbus-root-service-type list) (service-extension shepherd-root-service-type fwupd-shepherd-service))))) --8<---------------cut here---------------end--------------->8--- If we go for the first fix, the polkit-service-type extension is not required. If we go for the /etc fix, the polkit-service-type extension is required. I know too little about polkit to make an informed choice here, so with some guidance I could work on a patch to close this issue. - Jelle