I've been trying to pass options to certain modules at boot like
this:
--8<---------------cut
here---------------start------------->8---
(simple-service 'thinkpad-acpi etc-service-type
(list `("modprobe.d/thinkpad.conf"
,(plain-file "thinkpad.conf"
"options thinkpad_acpi
fan_control=1\n"))))
--8<---------------cut
here---------------end--------------->8---
This seems all okay and the store item is properly linked to
/etc/modprobe.d. The only problem though is that this parameter
is not passed to the module. Thus fan_control is not enabled.