The Horde application framework version 2.2.8 (and all version 2 series as far as I understand), does not work with php version 4.4.0 (see http://archives.free.net.ph/message/20050712.145515.4bf53644.en.html#horde-imp ). emerging horde with keyword ~amd64 allows you to emerge horde 3.0.5 (version 3 series) where it seems that this compatability problem is solved by the vendor. On a side note, even though masked, I didn't find any problem with any feature of horde on my amd64 platform so far. My suggestion is to make php >= 4.4.0 blocking for horde 2.x.x . (However, I'm unsure in what version of php does this compatability issue start). Reproducible: Didn't try Steps to Reproduce: 1. find an amd64 platform 2. emerge --oneshot ">=dev-php/php-4.4.0" 3. emerge horde 4. (fix vhosts if required on your system using webapp-config) 5. try to access http://your_vhost/horde/ Actual Results: php error messages (see the link in the bug details). Expected Results: horde application framework functioning normally.
file a bug with upstream horde devs please