bug_ebuild/gentoo/dev-scheme/scm/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer type="project">
		<email>scheme@gentoo.org</email>
		<name>Gentoo Scheme Project</name>
	</maintainer>
	<longdescription lang="en">
SCM is a  Scheme implementation conforming to  Revised5 Report on the Algorithmic Language Scheme and the IEEE P1178 specification.
	</longdescription>
	<use>
		<flag name="arrays">Support for  arrays, uniform-arrays and
			uniform-vectors.</flag>
		<flag name="bignums">Support for large precision integers.</flag>
		<flag name="cautious">SCM will always check the number of arguments to
			interpreted closures.</flag>
		<flag name="dynamic-linking">Be able to load compiled files while
			running.</flag>
		<flag name="engineering-notation">Floats to display in engineering
			notation (exponents always multiples of 3) instead of scientific
			notation.</flag>
		<flag name="gsubr">generalized c arguments: for arbitrary 
			(more then 11) arguments to C functions.</flag>
		<flag name="inexact">Support for floating point numbers.</flag>
		<flag name="ioext">Commonly available I/O extensions: line I/O, file
			positioning, file delete and rename, and directory functions.</flag>
		<flag name="libscm">Build and install libscm.a and related headers</flag>
		<flag name="macro">C level support for hygienic and referentially 
			transparent macros (syntax-rules macros).</flag>
		<flag name="regex">String regular expression matching.</flag>
		<flag name="unix">Support for: nice, acct, lstat, readlink, symlink,
			mknod and sync.</flag>
	</use>
</pkgmetadata>