* gnu/packages/polkit.scm (polkit)[source]: Adjust snippet so that rules
and actions are looked for under /etc/polkit-1.
* gnu/services/desktop.scm (<polkit-configuration>): New record type.
(polkit-directory, polkit-etc-files, polkit-setuid-programs): New
procedures.
(polkit-service-type)[compose, extend]: New fields.
(polkit-service): Refine docstring.
(colord-service-type): Extend POLKIT-SERVICE-TYPE.
(elogind-configuration-file): Extend POLKIT-SERVICE-TYPE.
* doc/guix.texi (Desktop Services): Update 'polkit-service'
documentation.
* gnu/packages/polkit.scm (polkit): Configure to look for actions and
rules in the system profile. Arrange to look for the setuid helper in
/run/setuid-programs. Fix introspection installation.
Based on a patch by Mark H Weaver <mhw@netris.org>.
Ludovic Courtès