app-text/xan: update 9999

changes:
 - modify src_unpack() internally instead of redefining:
   functions should be defined on the order that they are called
   for more info, check:
   https://github.com/gentoo/guru/commit/e19c6d574461655f11cb1c6e1b37ff22c9a6ff70#commitcomment-172006236

updates:
 - DEPEND and src_compile:
   a lot of project uses -sys crates, and some of them like to vendor
   deps, for more info check:
   https://wiki.gentoo.org/wiki/Project:Rust/sys_crates and
   https://wiki.gentoo.org/wiki/Why_not_bundle_dependencies
   This commit fixes the deps for zstd-sys, and jemalloc-sys, instead of
   the vendored deps, they now use the system libs. The -sys crates dep
   fix part was done using this script:
   https://codeberg.org/ingenarel-NeoJesus/gentoo-dev-scripts/src/commit/9b9bb737a8127582f431b646f4072d66d0165e0c/bins/apply-crates-fixes
 - copyright years

Signed-off-by: ingenarel (NeoJesus) <ingenarel_neojesus@disroot.org>
Part-of: https://codeberg.org/gentoo/guru/pulls/8

app-text/xan/xan-9999.ebuild

@@ -1,4 +1,4 @@
-# Copyright 2025 Gentoo Authors
+# Copyright 2025-2026 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 # Autogenerated by pycargoebuild 0.14.0
@@ -17,10 +17,6 @@ HOMEPAGE="https://github.com/medialab/xan"
 if [[ "${PV}" == *9999* ]]; then
 	inherit git-r3
 	EGIT_REPO_URI="https://github.com/medialab/xan"
-	src_unpack() {
-		git-r3_src_unpack
-		cargo_live_src_unpack
-	}
 else
 	SRC_URI="https://github.com/medialab/xan/archive/${PV}.tar.gz -> ${P}.tar.gz"
 	SRC_URI+=" ${CARGO_CRATE_URIS}"
@@ -35,11 +31,35 @@ LICENSE+="
 	Unlicense ZLIB
 "
 SLOT="0"
+# apply-crates-fixes start
+RDEPEND="
+	>=app-arch/zstd-1.5.7
+	>=dev-libs/jemalloc-5.3.0
+"
+DEPEND="${RDEPEND}"
+# apply-crates-fixes end
 
 QA_FLAGS_IGNORED="usr/bin/xan"
 
 DOCS=( README.md docs )
 
+src_unpack() {
+	if [[ "${PV}" == *9999* ]]; then
+		git-r3_src_unpack
+		cargo_live_src_unpack
+	else
+		cargo_src_unpack
+	fi
+}
+# apply-crates-fixes start
+src_compile() {
+	export ZSTD_SYS_USE_PKG_CONFIG=1 # fix for zstd-sys crate
+	JEMALLOC_OVERRIDE="/usr/$(get_libdir)/libjemalloc.so"
+	export JEMALLOC_OVERRIDE # fix for jemalloc-sys crate
+	cargo_src_compile
+}
+# apply-crates-fixes end
+
 src_install() {
 	cargo_src_install
 	einstalldocs