gentoo-overlay/app-emacs/calfw/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="person">
  <email>naota@gentoo.org</email>
</maintainer>
<maintainer type="project">
  <email>gnu-emacs@gentoo.org</email>
  <name>Gentoo GNU Emacs project</name>
</maintainer>
<stabilize-allarches/>
<use>
  <flag name="howm">Add support for the <pkg>app-emacs/howm</pkg>
    note-taking tool</flag>
</use>
<upstream>
  <remote-id type="github">kiwanami/emacs-calfw</remote-id>
</upstream>
</pkgmetadata>