dev-ml/metrics: initial import

Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>

dev-ml/metrics/Manifest

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+DIST metrics-0.2.0.tbz 18159 BLAKE2B d480c9c9bd6600748bbe747ef3a10909cfc3e0d65039eadc28c6bc065d6bc1739833bcd3093ae146630a38168cb27df0484f7d6942a53a51f220a43aeebc22f6 SHA512 3f1a6cfbcc674409a7382446084c11c3646e6b380e4972306334e7fa0e558d256dadfd39f7f3acd32afffe78757f66ecefc1b7960ae366afe09397ba0bbdaf68

dev-ml/metrics/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="person">
+    <description>co-maintainers welcome</description>
+    <email>lssndrbarbieri@gmail.com</email>
+    <name>Alessandro Barbieri</name>
+  </maintainer>
+  <upstream>
+    <remote-id type="github">mirage/metrics</remote-id>
+  </upstream>
+  <use>
+    <flag name="influx">Influx reporter for the Metrics library</flag>
+    <flag name="lwt">Lwt backend for the Metrics library</flag>
+    <flag name="rusage">Resource usage (getrusage) sources for the Metrics library</flag>
+    <flag name="unix">Unix backend for the Metrics library</flag>
+  </use>
+</pkgmetadata>

dev-ml/metrics/metrics-0.2.0.ebuild

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+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit dune multiprocessing
+
+DESCRIPTION="Infrastructure to collect metrics from OCaml applications"
+HOMEPAGE="https://github.com/mirage/metrics"
+SRC_URI="https://github.com/mirage/metrics/releases/download/${PV}/${P}.tbz"
+
+LICENSE="ISC"
+SLOT="0/${PV}"
+KEYWORDS="~amd64"
+IUSE="influx lwt ocamlopt rusage test unix"
+
+RDEPEND="
+	dev-ml/fmt
+	influx? (
+		dev-ml/duration
+		dev-ml/lwt
+	)
+	lwt? (
+		dev-ml/lwt
+		dev-ml/logs
+	)
+	rusage? ( dev-ml/logs )
+	unix? (
+		dev-ml/uuidm
+		dev-ml/mtime
+		sci-visualization/gnuplot
+	)
+"
+DEPEND="
+	${RDEPEND}
+	test? ( dev-ml/alcotest )
+"
+
+RESTRICT="!test? ( test )"
+REQUIRED_USE="test? ( lwt unix )"
+
+src_compile() {
+	local pkgs="metrics"
+	for u in influx lwt unix rusage ; do
+		if use ${u} ; then
+			pkgs="${pkgs},metrics-${u}"
+		fi
+	done
+	dune build --only-packages "${pkgs}" -j $(makeopts_jobs) --profile release || die
+}
+
+src_install() {
+	dune_src_install metrics
+	use influx && dune_src_install metrics-influx
+	use lwt && dune_src_install metrics-lwt
+	use rusage && dune_src_install metrics-rusage
+	use unix && dune_src_install metrics-unix
+}