Add support for external cargo subcommand

src/bin/cargo-xwin.rs

@@ -1,5 +1,7 @@
-use anyhow::Context;
-use cargo_options::Metadata;
+use std::env;
+use std::ffi::OsString;
+use std::process::Command;
+
 use cargo_xwin::{Build, Check, Clippy, Run, Rustc, Test};
 use clap::{Parser, Subcommand};
 
@@ -21,14 +23,14 @@ pub enum Opt {
     Build(Build),
     Check(Check),
     Clippy(Clippy),
-    #[command(name = "metadata")]
-    Metadata(Metadata),
     #[command(name = "run", alias = "r")]
     Run(Run),
     #[command(name = "rustc")]
     Rustc(Rustc),
     #[command(name = "test", alias = "t")]
     Test(Test),
+    #[command(external_subcommand)]
+    External(Vec<OsString>),
 }
 
 fn main() -> anyhow::Result<()> {
@@ -38,21 +40,21 @@ fn main() -> anyhow::Result<()> {
     match cli {
         Cli::Opt(opt) | Cli::Cargo(opt) => match opt {
             Opt::Build(build) => build.execute()?,
-            Opt::Metadata(metadata) => {
-                let mut cmd = metadata.command();
-                let mut child = cmd.spawn().context("Failed to run cargo metadata")?;
-                let status = child
-                    .wait()
-                    .expect("Failed to wait on cargo metadata process");
-                if !status.success() {
-                    std::process::exit(status.code().unwrap_or(1));
-                }
-            }
             Opt::Run(run) => run.execute()?,
             Opt::Rustc(rustc) => rustc.execute()?,
             Opt::Test(test) => test.execute()?,
             Opt::Check(check) => check.execute()?,
             Opt::Clippy(clippy) => clippy.execute()?,
+            Opt::External(args) => {
+                let mut child = Command::new(env::var_os("CARGO").unwrap_or("cargo".into()))
+                    .args(args)
+                    .env_remove("CARGO")
+                    .spawn()?;
+                let status = child.wait().expect("Failed to wait on cargo process");
+                if !status.success() {
+                    std::process::exit(status.code().unwrap_or(1));
+                }
+            }
         },
     }
     Ok(())