Fix maturin develop for arm64 Python on M1 Mac when default toolcha…

…in is x86_64

src/develop.rs

@@ -1,4 +1,5 @@
 use crate::build_options::CargoOptions;
+use crate::target::Arch;
 use crate::BuildOptions;
 use crate::PlatformTag;
 use crate::PythonInterpreter;
@@ -21,8 +22,28 @@ pub fn develop(
     strip: bool,
     extras: Vec<String>,
 ) -> Result<()> {
-    let target = Target::from_target_triple(None)?;
+    let mut target = Target::from_target_triple(None)?;
     let python = target.get_venv_python(&venv_dir);
+
+    // check python platform and architecture
+    match Command::new(&python)
+        .arg("-c")
+        .arg("import sysconfig; print(sysconfig.get_platform(), end='')")
+        .output()
+    {
+        Ok(output) if output.status.success() => {
+            let platform = String::from_utf8_lossy(&output.stdout);
+            if platform.contains("macos") {
+                if platform.contains("x86_64") && target.target_arch() != Arch::X86_64 {
+                    target = Target::from_target_triple(Some("x86_64-apple-darwin".to_string()))?;
+                } else if platform.contains("arm64") && target.target_arch() != Arch::Aarch64 {
+                    target = Target::from_target_triple(Some("aarch64-apple-darwin".to_string()))?;
+                }
+            }
+        }
+        _ => eprintln!("⚠️  Warning: Failed to determinate python platform"),
+    }
+
     // Store wheel in a unique location so we don't get name clashes with parallel runs
     let wheel_dir = TempDir::new().context("Failed to create temporary directory")?;