app-alternatives/gzip: add 1 with tighter pigz dep

This is needed for zlib-1.3 compat. This should help to get the upgrade
order right w/ zlib-1.3 and pigz.

Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 44 insertions, 0 deletions

diff --git a/app-alternatives/gzip/gzip-1.ebuild b/app-alternatives/gzip/gzip-1.ebuild
new file mode 100644
index 000000000000..8a083740abc5
--- /dev/null
+++ b/app-alternatives/gzip/gzip-1.ebuild
@@ -0,0 +1,44 @@
+# Copyright 2022-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+ALTERNATIVES=(
+	"reference:>=app-arch/gzip-1.12-r3"
+	"pigz:>=app-arch/pigz-2.8[-symlink(-)]"
+)
+
+inherit app-alternatives
+
+DESCRIPTION="gzip symlinks"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+IUSE="split-usr"
+
+RDEPEND="
+	!<app-arch/gzip-1.12-r3
+	!app-arch/pigz[symlink(-)]
+"
+
+src_install() {
+	local usr_prefix=
+	use split-usr && usr_prefix=../usr/bin/
+
+	case $(get_alternative) in
+		pigz)
+			dosym "${usr_prefix}pigz" /bin/gzip
+			dosym gzip /bin/gunzip
+			dosym gzip /bin/zcat
+			newman - gzip.1 <<<".so pigz.1"
+			;;
+		reference)
+			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"
+			;;
+	esac
+
+	newman - gunzip.1 <<<".so gzip.1"
+	newman - zcat.1 <<<".so gzip.1"
+}