Merge pull request #127 from sirhcel/unstable-options

Allow passing unstable options to Cargo

Author: MabezDev

cargo-espflash/src/main.rs

@@ -211,6 +211,13 @@ fn build(
         args.extend(features.iter().map(|f| f.as_str()));
     }
 
+    if let Some(unstable) = build_options.unstable.as_deref() {
+        for item in unstable.iter() {
+            args.push("-Z");
+            args.push(item);
+        }
+    }
+
     // Invoke the 'cargo build' command, passing our list of arguments.
     let output = Command::new("cargo")
         .arg("build")

espflash/src/cli/clap.rs

@@ -29,6 +29,9 @@ pub struct BuildArgs {
     /// Target to build for
     #[clap(long)]
     pub target: Option<String>,
+    /// Unstable (nightly-only) flags to Cargo, see 'cargo -Z help' for details
+    #[clap(short = 'Z')]
+    pub unstable: Option<Vec<String>>,
 }
 
 #[derive(Parser)]