the create-databases.sh included in /usr/share/webapps/davical/1.0.2-r1/sqlscripts/ looks for dev-php/awl in the wrong directories. On gentoo it is installed in /usr/share/php/awl.
Created attachment 313625 [details, diff] patch for create-database.sh
Created attachment 313627 [details] new ebuild to patch create-database.sh
The patch works.