void-packages/srcpkgs/dot-xsession/files/dot-xsession

#!/bin/sh

exit_msg() {
    xmessage -buttons Exit "$@"
    exit 1
}

[ ! -e ~/.xsession ] && exit_msg "File ~/.xsession doesn't exist."
[ ! -x ~/.xsession ] && exit_msg "File ~/.xsession not executable."

exec ~/.xsession