From 7dbd9efce69d73d24db421189e4d2beccbcd6da2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Thu, 1 Dec 2022 17:11:04 +0100
Subject: [PATCH] app-alternatives/gzip: Add a package for gzip symlinks
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Closes: https://bugs.gentoo.org/868648
Signed-off-by: Michał Górny <mgorny@gentoo.org>
Signed-off-by: Sam James <sam@gentoo.org>
---
 app-alternatives/gzip/gzip-0.ebuild | 45 +++++++++++++++++++++++++++++
 app-alternatives/gzip/metadata.xml  | 20 +++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 app-alternatives/gzip/gzip-0.ebuild
 create mode 100644 app-alternatives/gzip/metadata.xml

diff --git a/app-alternatives/gzip/gzip-0.ebuild b/app-alternatives/gzip/gzip-0.ebuild
new file mode 100644
index 0000000000000..29e0808da4539
--- /dev/null
+++ b/app-alternatives/gzip/gzip-0.ebuild
@@ -0,0 +1,45 @@
+# Copyright 2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DESCRIPTION="gzip symlinks"
+HOMEPAGE="https://wiki.gentoo.org/wiki/Project:Base/Alternatives"
+SRC_URI=""
+S=${WORKDIR}
+
+LICENSE="CC0-1.0"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="pigz +reference split-usr"
+REQUIRED_USE="^^ ( pigz reference )"
+
+RDEPEND="
+	pigz? ( app-arch/pigz[-symlink(-)] )
+	reference? ( >=app-arch/gzip-1.12-r3 )
+	!<app-arch/gzip-1.12-r3
+	!app-arch/pigz[symlink(-)]
+"
+
+src_install() {
+	local usr_prefix=
+	use split-usr && usr_prefix=../usr/bin/
+
+	if use pigz; then
+		dosym "${usr_prefix}pigz" /bin/gzip
+		dosym gzip /bin/gunzip
+		dosym gzip /bin/zcat
+		newman - gzip.1 <<<".so pigz.1"
+	elif use reference; then
+		dosym gzip-reference /bin/gzip
+		# gzip uses shell wrappers rather than argv[0]
+		dosym gunzip-reference /bin/gunzip
+		dosym zcat-reference /bin/zcat
+		newman - gzip.1 <<<".so gzip-reference.1"
+	else
+		die "Invalid USE flag combination (broken REQUIRED_USE?)"
+	fi
+
+	newman - gunzip.1 <<<".so gzip.1"
+	newman - zcat.1 <<<".so gzip.1"
+}
diff --git a/app-alternatives/gzip/metadata.xml b/app-alternatives/gzip/metadata.xml
new file mode 100644
index 0000000000000..6a439f199cb15
--- /dev/null
+++ b/app-alternatives/gzip/metadata.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>base-system@gentoo.org</email>
+		<name>Gentoo Base System</name>
+	</maintainer>
+	<maintainer type="person">
+		<email>mgorny@gentoo.org</email>
+		<name>Michał Górny</name>
+	</maintainer>
+	<use>
+		<flag name="pigz">
+			Symlink to <pkg>app-arch/pigz</pkg>.
+		</flag>
+		<flag name="reference">
+			Symlink to <pkg>app-arch/gzip</pkg>.
+		</flag>
+	</use>
+</pkgmetadata>