If possible just like the rest of KDE / Plasma based on phabricator and git.
So far we discussed drafted guidelines on the special mailing list kde-guidelines@kde.org; if we move to phabricator or any other tool this ml could be removed
Most likely this means switching to something different, then the wiki.
I would suggest either something based on markup (because wiki pages are in markup?) eg http://www.sphinx-doc.org/en/stable/markup/, or if KDE / Plasma uses already something else in several similar projects use this.
Some more pros for switching from wiki:
- Could also be done in git
- most new images are generated from qml files, but the wiki offers no way to batch upload all of them, e.g. after the release of a new plasma version
- much better version control. eg at the moment it's next to impossible to create and discuss a draft
- easier inclusion of autogenerated content, eg color schemes directly from the color scheme sources
- probably better control over the layout and more consistency in the pages
Con:
- needs extra software to build
- probably harder to contribute for someone new
- findability, searchability