app-admin/customrescuecd-x86_64 version bump to 0.12.1

Signed-off-by: Andrea Postiglione <andrea.postiglione@gmail.com>

app-admin/customrescuecd-x86_64/customrescuecd-x86_64-0.12.1.ebuild

@@ -0,0 +1,55 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+MY_P="CUSTOMRESCUECD-x86_64"
+DESCRIPTION="A system rescue cd or usbstick for desktop and server based on gentoo"
+HOMEPAGE="https://sourceforge.net/projects/customrescuecd"
+SRC_URI="mirror://sourceforge/customrescuecd/"${MY_P}"-"${PV}".iso"
+
+LICENSE="GPL-3"
+SLOT="${PV}"
+KEYWORDS="~amd64"
+RESTRICT="bindist mirror"
+
+S=${WORKDIR}
+
+src_unpack() { :; }
+
+src_install() {
+	insinto "/usr/share/${PN%-*}"
+	doins "${DISTDIR}/${MY_P}-${PV}.iso"
+}
+
+pkg_postinst() {
+	local f=${EROOT%/}/usr/share/${PN%-*}/${PN}-newest.iso
+
+	# no version newer than ours? we're the newest!
+	if ! has_version ">${CATEGORY}/${PF}"; then
+		ln -f -s -v "${MY_P}-${PV}.iso" "${f}" || die
+	fi
+}
+
+pkg_postrm() {
+	local f=${EROOT%/}/usr/share/${PN%-*}/${PN}-newest.iso
+
+	# if there is no version newer than ours installed
+	if ! has_version ">${CATEGORY}/${PF}"; then
+		# and we are truly and completely uninstalled...
+		if [[ ! ${REPLACED_BY_VERSION} ]]; then
+			# then find an older version to set the symlink to
+			local newest_version=$(best_version "<${CATEGORY}/${PF}")
+
+			if [[ ${newest_version} ]]; then
+				# update the symlink
+				ln -f -s -v "${newest_version%-r*}.iso" "${f}" || die
+			else
+				# last version removed? clean up the symlink
+				rm -v "${f}" || die
+				# and the parent directory
+				rmdir "${f%/*}" || die
+			fi
+		fi
+	fi
+}