no terminal on windows

examples/env.py

@@ -0,0 +1,13 @@
+from textual.app import App, ComposeResult
+from textual.widgets import Pretty
+
+import os
+
+
+class TerminalEnv(App):
+    def compose(self) -> ComposeResult:
+        yield Pretty(dict(os.environ))
+
+
+if __name__ == "__main__":
+    TerminalEnv().run()

src/textual_web/cli.py

@@ -158,7 +158,9 @@ def app(
 
     if terminal:
         ganglion_client.add_terminal(
-            "Terminal", os.environ.get("SHELL", "bin/sh"), identity.generate().lower()
+            "Terminal",
+            os.environ.get("SHELL", "bin/sh"),
+            identity.generate().lower(),
         )
 
     if not ganglion_client.app_count:

src/textual_web/ganglion_client.py

@@ -293,6 +293,14 @@ class GanglionClient(Handlers):
             app.model_dump(include={"name", "slug", "color", "terminal"})
             for app in self.config.apps
         ]
+        if WINDOWS:
+            filter_apps = [app for app in apps if not app["terminal"]]
+            if filter_apps != apps:
+                log.warn(
+                    "Sorry, textual-web does not currently support terminals on Windows"
+                )
+            apps = filter_apps
+
         await self.send(packets.DeclareApps(apps))
 
     async def send(self, packet: Packet) -> bool: