media-video/tsukimi: add clang use and change .desktop resource

Signed-off-by: irort <irort3124@gmail.com>

media-video/tsukimi/files/tsukimi.desktop

@@ -1,7 +0,0 @@
-[Desktop Entry]
-Name=Tsukimi
-Exec=tsukimi
-Type=Application
-Icon=tsukimi
-Categories=AudioVideo;
-StartupWMClass=moe.tsuna.tsukimi

media-video/tsukimi/metadata.xml

@@ -9,4 +9,7 @@ pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 	<upstream>
 		<remote-id type="github">tsukinaha/tsukimi</remote-id>
 	</upstream>
+	<use>
+		<flag name="clang">Use clang compiler instead of GCC</flag>
+	</use>
 </pkgmetadata>

media-video/tsukimi/tsukimi-0.20.0-r1.ebuild

@@ -433,6 +433,8 @@ LICENSE+="
 SLOT="0"
 KEYWORDS="~amd64"
 
+IUSE="clang"
+
 RDEPEND="
 	>=gui-libs/gtk-4.14
 	>=gui-libs/libadwaita-1.6
@@ -442,25 +444,40 @@ RDEPEND="
 
 DEPEND="${RDEPEND}"
 BDEPEND="
-	$(llvm_gen_dep '
-		llvm-core/clang:${LLVM_SLOT}
-		llvm-core/llvm:${LLVM_SLOT}
-		llvm-core/lld:${LLVM_SLOT}
-	')
+	clang? (
+		$(llvm_gen_dep '
+			llvm-core/clang:${LLVM_SLOT}
+			llvm-core/llvm:${LLVM_SLOT}
+			llvm-core/lld:${LLVM_SLOT}
+		')
+	)
 "
 
 pkg_setup() {
-	if tc-is-clang; then
-		export RUSTFLAGS="${RUSTFLAGS} -C linker=clang -C link-arg=-fuse-ld=lld"
+	if use clang && ! tc-is-clang; then
+		llvm-r1_pkg_setup
+		export CC=clang
+		export CXX=clang++
+		export AR=llvm-ar
+		export NM=llvm-nm
+		export STRIP=llvm-strip
+		export RANLIB=llvm-ranlib
 	fi
-	llvm-r1_pkg_setup
 	rust_pkg_setup
 }
 
+src_prepare() {
+	default
+
+	sed -i -e \
+		's/^Icon=moe.tsuna.tsukimi/Icon=tsukimi/' \
+		"${S}/resources/moe.tsuna.tsukimi.desktop.in" || die
+}
+
 src_install() {
 	dobin $(cargo_target_dir)/tsukimi
 	newicon -s 256 "resources/icons/moe.tsuna.tsukimi.png" "${PN}.png"
-	domenu "${FILESDIR}/${PN}.desktop"
+	newmenu "resources/moe.tsuna.tsukimi.desktop.in" "${PN}.desktop"
 	insinto /usr/share/glib-2.0/schemas
 	doins resources/moe.tsuna.tsukimi.gschema.xml
 	insinto /usr/share