setsockopt on mac too

src/py/reactpy/.temp.py

@@ -0,0 +1,28 @@
+from reactpy import component, html, run, use_state
+from reactpy.core.types import State
+
+
+@component
+def Item(item: str, all_items: State[list[str]]):
+    color = use_state(None)
+
+    def deleteme(event):
+        all_items.set_value([i for i in all_items.value if (i != item)])
+
+    def colorize(event):
+        color.set_value("blue" if not color.value else None)
+
+    return html.div(
+        {"id": item, "style": {"background_color": color.value}},
+        html.button({"on_click": colorize}, f"Color {item}"),
+        html.button({"on_click": deleteme}, f"Delete {item}"),
+    )
+
+
+@component
+def App():
+    items = use_state(["A", "B", "C"])
+    return html._([Item(item, items, key=item) for item in items.value])
+
+
+run(App)

src/py/reactpy/reactpy/backend/utils.py

@@ -53,10 +53,10 @@ def find_available_port(host: str, port_min: int = 8000, port_max: int = 9000) -
     for port in range(port_min, port_max):
         with closing(socket.socket()) as sock:
             try:
-                if sys.platform == "linux":
-                    # Fixes bug where every time you restart the server you'll
-                    # get a different port on Linux. This cannot be set on Windows
-                    # otherwise address will always be reused.
+                if sys.platform in ("linux", "darwin"):
+                    # Fixes bug on Unix-like systems where every time you restart the
+                    # server you'll get a different port on Linux. This cannot be set
+                    # on Windows otherwise address will always be reused.
                     # Ref: https://stackoverflow.com/a/19247688/3159288
                     sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
                 sock.bind((host, port))