error: invalid definition of the runtime `close` symbol used by the standard library
  --> /wrkdirs/usr/ports/x11/squeekboard/work/squeekboard-v1.43.1/src/vkeyboard.rs:49:9
   |
49 |         fn close(fd: u32);
   |         ^^^^^^^^^^^^^^^^^^
   |
   = note: expected `unsafe extern "C" fn(i32) -> i32` (for the current target)
           found    `unsafe extern "C" fn(u32)`
   = help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "close")]`, or `#[link_name = "close"]`
   = note: `#[deny(invalid_runtime_symbol_definitions)]` on by default


--- src/vkeyboard.rs.orig	2026-10-12 16:25:55 UTC
+++ src/vkeyboard.rs
@@ -39,14 +39,13 @@ pub mod c {
     impl Drop for KeyMap {
         fn drop(&mut self) {
             unsafe {
-                close(self.fd as u32);
+                close(self.fd as i32);
             }
         }
     }
 
     extern "C" {
-        // From libc, to let KeyMap get deallocated.
-        fn close(fd: u32);
+        fn close(fd: i32) -> i32;
 
         pub fn eek_virtual_keyboard_v1_key(
             virtual_keyboard: ZwpVirtualKeyboardV1,