Restore CARGO_HOME

PKGBUILD

@@ -45,7 +45,10 @@ export CARGO_PROFILE_RELEASE_DEBUG=2
 
 prepare() {
   cd $pkgname
-  cargo fetch --locked --target "$(rustc -vV | sed -n 's/host: //p')"
+
+  # Match CARGO_HOME in src/meson.build
+  CARGO_HOME="$srcdir/build/cargo-home" \
+    cargo fetch --locked --target "$(rustc -vV | sed -n 's/host: //p')"
 }
 
 build() {