--- a/project.py	2020-09-27 14:28:27.338774698 +0700
+++ b/project.py	2020-09-27 14:28:29.317795099 +0700
@@ -51,6 +51,15 @@
             _QOpenGLFunctions_2_1, _QOpenGLFunctions_4_1_Core,
             _QOpenGLFunctions_ES2, pylupdate, pyrcc]
 
+    def run_command(self, args, *, fatal=True):
+        """ Run a command and display the output if requested. """
+        qemu_machine = os.environ.get("XBPS_TARGET_QEMU_MACHINE")
+        builddir = os.environ.get("XBPS_BUILDDIR")
+        if qemu_machine and args[0].startswith(os.path.join(builddir, "PyQt5")):
+            qemu = "qemu-{}-static".format(qemu_machine)
+            args.insert(0, qemu)
+        super().run_command(args, fatal=fatal)
+
     def apply_user_defaults(self, tool):
         """ Set default values where needed. """