dev-scheme/gerbil: new pkg; add version 0.16 and 9999

Package-Manager: Portage-3.0.13, Repoman-3.0.2
Signed-off-by: Maciej Barć <xgqt@protonmail.com>

dev-scheme/gerbil/metadata.xml

@@ -0,0 +1,34 @@
+<?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="leveldb">
+			Add support for using dev-libs/leveldb
+		</flag>
+		<flag name="lmdb">
+			Add support for using dev-db/lmdb
+		</flag>
+		<flag name="yaml">
+			Add support for yaml file format
+		</flag>
+	</use>
+	<longdescription lang="en">
+		Gerbil is an opinionated dialect of Scheme designed
+		for Systems Programming, with a state of the art macro
+		and module system on top of the Gambit runtime.
+		The macro system is based on quote-syntax, and provides
+		the full meta-syntactic tower with a native implementation
+		of syntax-case. It also provides a full-blown module system,
+		similar to PLT Scheme’s (Racket) modules. The main difference
+		from Racket is that Gerbil modules are single instantiation,
+		supporting high performance ahead of time compilation
+		and compiled macros.
+	</longdescription>
+	<upstream>
+		<remote-id type="github">vyzo/gerbil</remote-id>
+	</upstream>
+</pkgmetadata>