Default to twsearch for the cargo run and cargo test.

This is done by specifing a single default package in the top-level `Cargo.toml`: rust-lang/cargo#7290

Cargo.toml

@@ -4,3 +4,6 @@ members = [
   "src/cpp",
   "src/rs",
 ]
+default-members = [
+  "src/rs"
+]

Makefile

@@ -37,21 +37,19 @@ test-rs-all: \
 	test-rs-orientation_packer \
 	test-rs-no_orientation_mod
 
-TEST_RS = cargo test --package twsearch
-
 .PHONY: test-rs-default
 test-rs-default:
-	${TEST_RS}
+	cargo test
 
 .PHONY: test-rs-orientation_packer
 test-rs-orientation_packer:
-	${TEST_RS} --features orientation_packer
+	cargo test --features orientation_packer
 
 .PHONY: test-rs-no_orientation_mod
 test-rs-no_orientation_mod:
-	${TEST_RS} --features no_orientation_mod
+	cargo test --features no_orientation_mod
 
-BENCHMARK_RS = cargo run --package twsearch --release --example benchmark
+BENCHMARK_RS = cargo run --release --example benchmark
 
 .PHONY: benchmark-rs-all
 benchmark-rs-all: \

src/cpp/examples/lib/common.rs

@@ -42,6 +42,8 @@ impl CliCommand {
             CliCommand::Cpp() => &[],
             CliCommand::Rust() => &[
                 "run",
+                "--package",
+                "twsearch-cpp-wrapper",
                 "--quiet", // Suppress deprecation warnings for transitive dependencies (`buf_redux`, `multipart`): https://github.com/tomaka/rouille/issues/271
                 "--",
                 "search",

src/rs/Cargo.toml

@@ -10,14 +10,18 @@ no_orientation_mod = []
 
 [dependencies]
 cityhash = "0.1.1"
-clap = "4.3.24"
+clap = { version = "4.3.24", features = ["derive"] }
 clap_complete = "4.3.2"
 cubing = "0.5.4"
 derive_more = "0.99.17"
-serde = "1.0.186"
+serde = { version = "1.0.186", features = ["derive", "rc"] }
 
 [dev-dependencies]
 wait-timeout = "0.2.0"
 
 [lib]
 path = "./mod.rs"
+
+[[bin]]
+name = "twsearch"
+path = "./cli/main.rs"

src/rs/cli/main.rs

@@ -0,0 +1,27 @@
+use std::process::exit;
+
+use twsearch::_internal::cli::{get_options_cpp_wrapper, CliCommand};
+
+fn main() {
+    let args = get_options_cpp_wrapper();
+
+    let result: Result<(), String> = match args.command {
+        CliCommand::Completions(_completions_args) => {
+            panic!("Completions should have been printed during options parsing, followed by program exit.");
+        }
+        CliCommand::Search(_search_command_args) => todo!(),
+        CliCommand::Serve(_serve_command_args) => {
+            eprintln!("Skipping `serve` command.");
+            Ok(())
+        }
+        // TODO: consolidate def-only arg implementations.
+        CliCommand::SchreierSims(_schreier_sims_command_args) => todo!(),
+        CliCommand::GodsAlgorithm(_gods_algorithm_args) => todo!(),
+        CliCommand::TimingTest(_args) => todo!(),
+        CliCommand::CanonicalAlgs(_args) => todo!(),
+    };
+    if let Err(err) = result {
+        eprintln!("{}", err);
+        exit(1);
+    }
+}