gentoo-overlay/media-gfx/librecad/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <!-- maintainer-needed -->
  <use>
    <flag name="3d">Require all 2D coordinates stored as 3D</flag>
    <flag name="tools">Build additional tool programs: tff2lff</flag>
  </use>
  <upstream>
    <remote-id type="github">LibreCAD/LibreCAD</remote-id>
  </upstream>
</pkgmetadata>