The "repolist-skin" setting:

If non-zero then use this repository as the skin for a repository list such as created by the one of:

fossil server DIRECTORY --repolist
fossil ui DIRECTORY --repolist
fossil http DIRECTORY --repolist
(The "repolist" option in a CGI script)
fossil all ui
fossil all server

All repositories are searched (in lexicographical order) and the first repository with a non-zero "repolist-skin" value is used as the skin for the repository list page. If none of the repositories on the list have a non-zero "repolist-skin" setting then the repository list is displayed using unadorned HTML ("skinless").

If repolist-skin has a value of 2, then the repository is omitted from the list in use cases 1 through 4, but not for 5 and 6.