From e020a9f6cdf6d7d73023f4175d5faffc0cc12417 Mon Sep 17 00:00:00 2001
From: Wez Furlong <wez@wezfurlong.org>
Date: Mon, 19 Dec 2022 15:21:13 -0700
Subject: [PATCH] fix windows build

---
 mux/src/domain.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mux/src/domain.rs b/mux/src/domain.rs
index ca9b19494..ba253ad39 100644
--- a/mux/src/domain.rs
+++ b/mux/src/domain.rs
@@ -223,7 +223,9 @@ impl LocalDomain {
 
     #[cfg(windows)]
     fn is_conpty(&self) -> bool {
-        self.pty_system
+        let pty_system = self.pty_system.lock();
+        let pty_system: &dyn PtySystem = &**pty_system;
+        pty_system
             .downcast_ref::<portable_pty::win::conpty::ConPtySystem>()
             .is_some()
     }