horde comes with several addons (like imp, chora, kronolith, etc...) when installed, the addons need to go into the subdir of horde in the webserver root. for example: htdocs/ horde/ (net-www/horde) imp/ (net-www/horde-imp) chora/ (net-www/horde-chora) so here, imp would need to be able to tell webapp-config, 'i need to be in htdocs/horde/imp/' instead of webapp-config telling imp 'you need to be in htdocs/horde-imp/'
can't you just say -h blah -d /horde/imp ?
You're right; webapp-config needs improving in this area. Defering until webapp-config v2. Best regards, Stu