*/*: update for slotted Rust

guru version of this commit:
https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=01ba4dc61965ef7658a24728841c04c9a1ce4871

Closes: https://bugs.gentoo.org/943170
Closes: https://bugs.gentoo.org/943223
Closes: #260
Signed-off-by: Takuya Wakazono <pastalian46@gmail.com>

net-misc/warp/warp-0.7.0-r2.ebuild

@@ -439,6 +439,11 @@ PATCHES=(
 
 QA_FLAGS_IGNORED="usr/bin/warp"
 
+pkg_setup() {
+	python-any-r1_pkg_setup
+	rust_pkg_setup
+}
+
 src_prepare() {
 	default
 	python_fix_shebang build-aux/meson-cargo-manifest.py