sys-fs/ncdu: adjust ebuild for slotted Zig

Signed-off-by: Eric Joldasov <bratishkaerik@getgoogleoff.me>

sys-fs/ncdu/ncdu-2.2.2-r1.ebuild

@@ -0,0 +1,136 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit verify-sig edo
+
+DESCRIPTION="NCurses Disk Usage"
+HOMEPAGE="https://dev.yorhel.nl/ncdu"
+SRC_URI="
+	https://dev.yorhel.nl/download/${P}.tar.gz
+	verify-sig? ( https://dev.yorhel.nl/download/${P}.tar.gz.asc )
+"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+
+EZIG_MIN="0.10.0"
+EZIG_MAX_EXCLUSIVE="0.11.0"
+
+DEPEND="sys-libs/ncurses:=[unicode(+)]"
+RDEPEND="${DEPEND}"
+BDEPEND="
+	|| ( dev-lang/zig:0.10 dev-lang/zig-bin:0.10 )
+	virtual/pkgconfig
+	dev-lang/perl
+	verify-sig? ( sec-keys/openpgp-keys-yorhel )
+"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="${BROOT}"/usr/share/openpgp-keys/yoranheling.asc
+
+# see https://github.com/ziglang/zig/issues/3382
+# For now, Zig doesn't support CFLAGS/LDFLAGS/etc.
+QA_FLAGS_IGNORED="usr/bin/ncdu"
+
+# Many thanks to Florian Schmaus (Flowdalic)!
+# Adapted from https://github.com/gentoo/gentoo/pull/28986
+# Set the EZIG environment variable.
+zig-set_EZIG() {
+	[[ -n ${EZIG} ]] && return
+
+	if [[ -n ${EZIG_OVERWRITE} ]]; then
+		export EZIG="${EZIG_OVERWRITE}"
+		return
+	fi
+
+	local candidates candidate selected selected_ver
+
+	candidates=$(compgen -c zig-)
+
+	for candidate in ${candidates}; do
+		if [[ ! ${candidate} =~ zig(-bin)?-([.0-9]+) ]]; then
+			continue
+		fi
+
+		local ver
+		if (( ${#BASH_REMATCH[@]} == 3 )); then
+			ver="${BASH_REMATCH[2]}"
+		else
+			ver="${BASH_REMATCH[1]}"
+		fi
+
+		if [[ -n ${EZIG_EXACT_VER} ]]; then
+			ver_test "${ver}" -ne "${EZIG_EXACT_VER}" && continue
+
+			selected="${candidate}"
+			selected_ver="${ver}"
+			break
+		fi
+
+		if [[ -n ${EZIG_MIN} ]] \
+			   && ver_test "${ver}" -lt "${EZIG_MIN}"; then
+			# Candidate does not satisfy EZIG_MIN condition.
+			continue
+		fi
+
+		if [[ -n ${EZIG_MAX_EXCLUSIVE} ]] \
+			   && ver_test "${ver}" -ge "${EZIG_MAX_EXCLUSIVE}"; then
+			# Candidate does not satisfy EZIG_MAX_EXCLUSIVE condition.
+			continue
+		fi
+
+		if [[ -n ${selected_ver} ]] \
+			   && ver_test "${selected_ver}" -gt "${ver}"; then
+			# Candidate is older than the currently selected candidate.
+			continue
+		fi
+
+		selected="${candidate}"
+		selected_ver="${ver}"
+	done
+
+	if [[ -z ${selected} ]]; then
+		die "Could not find (suitable) zig installation in PATH"
+	fi
+
+	export EZIG="${selected}"
+	export EZIG_VER="${ver}"
+}
+
+# Invoke zig with the optionally provided arguments.
+ezig() {
+	zig-set_EZIG
+
+	# Unfortunately, we cannot add more args here, since syntax is different
+	# for every subcommands. Yes, even target/cpu :( f.i. :
+	# -target/-mcpu for zig build-exe vs -Dtarget/-Dcpu for zig build-
+	# -OReleaseSafe for zig build-exe vs -DReleaseSafe for zig build
+	# (or even none, if hardcoded by upstream so choice is -Drelease=true/false)
+	# Ofc we can patch this, but still...
+
+	edo "${EZIG}" "${@}"
+}
+
+src_unpack() {
+	if use verify-sig; then
+		verify-sig_verify_detached "${DISTDIR}"/${P}.tar.gz{,.asc}
+	fi
+	default
+}
+
+src_compile() {
+	ezig build -Drelease-fast
+	edo pod2man --center "ncdu manual" --release "ncdu-${PV}" ncdu.pod >ncdu.1
+}
+
+src_test() {
+	ezig build test -Drelease-fast
+}
+
+src_install() {
+	emake PREFIX="${ED}"/usr install
+
+	dodoc README.md ChangeLog
+}