gentoo-overlay/dev-haskell/linear/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer type="project">
  <email>haskell@gentoo.org</email>
  <name>Gentoo Haskell</name>
	</maintainer>
	<longdescription>
		Types and combinators for linear algebra on free vector spaces
	</longdescription>
<use>
  <flag name="template-haskell">You can disable the use of the
  `template-haskell` package using `-f-template-haskell`. Disabling this is an
  unsupported configuration, but it may be useful for accelerating builds in
  sandboxes for expert users.</flag>
</use>
</pkgmetadata>