Serve the app on 7860 without Gradio's SSR server

app.py

@@ -18,6 +18,9 @@ sys.path[:0] = [str(ROOT / "core"), str(ROOT / "openenv")]
 os.environ.setdefault("RAIL_TASKS_DIR", f"{ROOT / 'tasks' / 'rail-v1-eval'}:{ROOT / 'tasks' / 'rail-v1-train'}")
 os.environ.setdefault("RAIL_RUNS_DIR", str(ROOT / "runs"))
 os.environ.setdefault("ENABLE_WEB_INTERFACE", "true")
+# Spaces turn on Gradio's server-side rendering, whose Node server takes port 7860 before uvicorn can; the web UI
+# renders in the browser anyway.
+os.environ["GRADIO_SSR_MODE"] = "false"
 
 # The web UI shows a README: this card, without its front matter.
 card = (ROOT / "README.md").read_text(encoding="utf-8")
@@ -43,31 +46,7 @@ from rail_openenv.server import create_server  # noqa: E402
 
 app = create_server()
 
-def _diag():
-    import glob
-    print("DIAG argv", sys.argv, "pid", os.getpid(), "name", __name__, flush=True)
-    for d in sorted(glob.glob("/proc/[0-9]*")):
-        try:
-            cmd = open(f"{d}/cmdline", "rb").read().replace(b"\0", b" ").decode()[:300]
-        except OSError:
-            continue
-        print("DIAG proc", d.rsplit("/", 1)[1], cmd, flush=True)
-    keys = sorted(k for k in os.environ if k.startswith(("GRADIO", "SPACE", "PORT", "ZERO", "SYSTEM")))
-    print("DIAG env", {k: os.environ[k] for k in keys if "TOKEN" not in k and "KEY" not in k}, flush=True)
-    for f in ("/proc/net/tcp", "/proc/net/tcp6"):
-        try:
-            for ln in open(f).read().splitlines()[1:]:
-                parts = ln.split()
-                if parts[3] == "0A":
-                    print("DIAG listen", f, int(parts[1].split(":")[1], 16), flush=True)
-        except OSError:
-            pass
-
-
-_diag()
-
 if __name__ == "__main__":
-    _diag()
     if spaces is not None:
         from spaces import zero