dev-zig/zls: adjust ebuild (9999) for slotted Zig

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

1 files changed, 91 insertions, 8 deletions

diff --git a/dev-zig/zls/zls-9999.ebuild b/dev-zig/zls/zls-9999.ebuild
index 267e3221ac..f38e48ae05 100644
--- a/dev-zig/zls/zls-9999.ebuild
+++ b/dev-zig/zls/zls-9999.ebuild
@@ -1,42 +1,125 @@
-# Copyright 2022 Gentoo Authors
+# Copyright 2022-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-inherit git-r3
+inherit edo git-r3
 
 EGIT_REPO_URI="https://github.com/zigtools/zls"
 
-HOMEPAGE="https://github.com/zigtools/zls"
 DESCRIPTION="The officially unofficial Ziglang language server"
+HOMEPAGE="https://github.com/zigtools/zls"
 
 LICENSE="MIT"
 SLOT="0"
 
-DEPEND="~dev-lang/zig-9999"
+EZIG_MIN="9999"
+EZIG_MAX_EXCLUSIVE="99991"
+
+DEPEND="dev-lang/zig:${EZIG_MIN}"
 RDEPEND="${DEPEND}"
 
 # see https://github.com/ziglang/zig/issues/3382
 # For now, Zig Build System doesn't support CFLAGS/LDFLAGS/etc.
 QA_FLAGS_IGNORED="usr/bin/zls"
 
+# : copied from sys-fs/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}" "${@}"
+}
+
 src_unpack() {
 	git-r3_src_unpack
 	cd "${S}" || die
 	# "zig build" doesn't have "fetch" subcommand yet
-	zig build --help || die "Fetching Zig modules failed"
+	ezig build --help || die "Fetching Zig modules failed"
 }
 
 src_compile() {
-	zig build -Doptimize=ReleaseSafe -Ddata_version=master --verbose || die
+	ezig build -Doptimize=ReleaseSafe -Ddata_version=master --verbose || die
 }
 
 src_test() {
-	zig build test -Doptimize=ReleaseSafe -Ddata_version=master --verbose || die
+	ezig build test -Doptimize=ReleaseSafe -Ddata_version=master --verbose || die
 }
 
 src_install() {
-	DESTDIR="${ED}" zig build install --prefix /usr -Doptimize=ReleaseSafe -Ddata_version=master --verbose || die
+	DESTDIR="${ED}" ezig build install --prefix /usr -Doptimize=ReleaseSafe -Ddata_version=master --verbose || die
 	dodoc README.md
 }