Use *unspecified* as a marker for field values that have not been set.
Rationale: 'disabled may easily clash with user values for boolean fields, is
confusing (i.e. its meaning is *not* boolean false, but unspecified) and it
also passes silently through the symbol? predicate of a field of type symbol.
* gnu/services/configuration.scm (configuration-missing-default-value):
Renamed from configuration-no-default-value.
(define-maybe-helper): Use *unspecified* instead of 'disabled, and make
the default value optional.
* gnu/home/services/desktop.scm (home-redshift-configuration):
Change (maybe-xyz 'disabled) to maybe-xyz.
* gnu/services/authentication.scm (nslcd-configuration): Likewise.
* gnu/services/cgit.scm (repository-cgit-configuration): Likewise.
* gnu/services/file-sharing.scm (serialize-maybe-string)
(serialize-maybe-file-object): Use 'unspecified?' instead of (eq? val
'disabled).
* gnu/services/messaging.scm (raw-content?): Likewise.
(ssl-configuration): Change (maybe-xyz 'disabled) to maybe-xyz.
(prosody-configuration): Likewise.
* gnu/services/file-sharing.scm (transmission-daemon-configuration):
Likewise.
* gnu/services/messaging.scm (define-all-configurations):
Use *unspecified* instead of 'disabled'.
* gnu/services/networking.scm (opendht-configuration): Likewise.
* gnu/services/pm.scm (tlp-configuration): Likewise.
* gnu/services/telephony.scm (jami-account): Likewise.
(jami-configuration): Likewise.
* gnu/services/vpn.scm (openvpn-client-configuration): Likewise.
* tests/services/configuration.scm ("maybe type, no default")
("maybe type, with default"): New tests.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Otherwise the global counterpart is never taken into account.
* doc/guix.texi (Version Control Services): Update accordingly.
* gnu/services/cgit.scm (repo-boolean?, serialize-repo-boolean): Use the
DEFINE-MAYBE macro to allow for the 'disabled value.
(repository-cgit-configuration)[enable-commit-graph?, enable-log-filecount?,
enable-log-linecount?, enable-remote-branches?, enable-subject-links?,
enable-html-serving?]: Change default value to 'disabled.
Instead of having the service manage the list, it's useful to be able to point
this at an existing file, for example, when using cgit together with gitolite.
* gnu/services/cgit.scm (project-list?): New procedure.
(serialize-project-list): Handle file-object values.
(<cgit-configuration>): Change the predicate for project-list to allow lists
and file-objects.
* gnu/services/cgit.scm (serialize-cgit-configuration): Add the extra options,
one per line, before the scan-path, as this makes it possible to use the
extra-options to affect the global behaviour for repositories.
(serialize-extra-options): New procedure.
* doc/guix.texi (Version Control Services): Update accordingly.
* gnu/services/cgit.scm (cgit-configuration)[project-list]: New field.
(serialize-project-list): New procedure that uses PLAIN-FILE to generate a
file from the string list given by the user as input.
(serialize-cgit-configuration): Make sure to serialize 'project-list' before
'repostory-directory'.
* gnu/services/cgit.scm (serialize-cgit-configuration): New procedure that
serializes fields with a precise order.
(cgit-activation): Replace the generic SERIALIZE-CONFIGURATION with
SERIALIZE-CGIT-CONFIGURATION.
