src_prepare-overlay/dev-scheme/racket/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
    <maintainer type="person">
        <email>xgqt@protonmail.com</email>
        <name>Maciej Barć</name>
    </maintainer>
    <use>
        <flag name="futures">
            Enable racket/future library for fine-grained hardware parallelism
        </flag>
        <flag name="graphics">
            Enable support for graphics
        </flag>
        <flag name="places">
            Enable racket/place library for share-nothing parallelism and message-passing communication. Compared to futures, places are heavyweight, but they have a simpler performance model.
        </flag>
        <flag name="threads">
            Enable support for green threads
        </flag>
    </use>
    <upstream>
        <remote-id type="github">racket/racket</remote-id>
    </upstream>
</pkgmetadata>