File fcitx5-karukan-skip-cargo-build.patch of Package karukan

--- a/karukan-im/fcitx5-addon/CMakeLists.txt
+++ b/karukan-im/fcitx5-addon/CMakeLists.txt
@@ -29,7 +29,7 @@
 # Build Rust library as a custom target
 find_program(CARGO cargo REQUIRED)
 add_custom_target(karukan_rust_lib ALL
-    COMMAND ${CARGO} build --release -p karukan-im
+    COMMAND true
     WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/../.."
     COMMENT "Building karukan-im Rust library"
     BYPRODUCTS "${KARUKAN_RUST_LIB}"