Remove create hub feature flag, warn if using production servers in dev

config/dev.exs

@@ -16,11 +16,10 @@ config :livebook, LivebookWeb.Endpoint,
     npm: ["run", "watch", cd: Path.expand("../assets", __DIR__)]
   ]
 
-config :livebook, :iframe_port, 4001
-config :livebook, :shutdown_callback, {System, :stop, []}
-
-# Feature flags
-config :livebook, :feature_flags, create_hub: true
+config :livebook,
+  iframe_port: 4001,
+  shutdown_callback: {System, :stop, []},
+  warn_on_live_teams_server: true
 
 # ## SSL Support
 #

config/test.exs

@@ -6,13 +6,14 @@ config :livebook, LivebookWeb.Endpoint,
   http: [port: 4002],
   server: false
 
-config :livebook, :iframe_port, 4003
-
 # Print only warnings and errors during test
 config :logger, level: :warning
 
 # Disable authentication mode during test
-config :livebook, :authentication_mode, :disabled
+config :livebook,
+  authentication_mode: :disabled,
+  check_completion_data_interval: 300,
+  iframe_port: 4003
 
 data_path = Path.expand("tmp/livebook_data/test")
 
@@ -23,14 +24,8 @@ end
 
 config :livebook, :data_path, data_path
 
-# Feature flags
-config :livebook, :feature_flags, create_hub: true
-
 # Use longnames when running tests in CI, so that no host resolution is required,
 # see https://github.com/livebook-dev/livebook/pull/173#issuecomment-819468549
 if System.get_env("CI") == "true" do
   config :livebook, :node, {:longnames, :"livebook@127.0.0.1"}
 end
-
-# Teams
-config :livebook, check_completion_data_interval: 300

lib/livebook.ex

@@ -126,7 +126,7 @@ defmodule Livebook do
     end
 
     if url = Livebook.Config.teams_url!("LIVEBOOK_TEAMS_URL") do
-      config :livebook, :teams_url, url
+      config :livebook, teams_url: url, warn_on_live_teams_server: false
     end
 
     if Livebook.Config.boolean!("LIVEBOOK_SHUTDOWN_ENABLED", false) do

lib/livebook/config.ex

@@ -312,6 +312,13 @@ defmodule Livebook.Config do
     Application.fetch_env!(:livebook, :random_boot_id)
   end
 
+  @doc """
+  If we should warn when using production servers.
+  """
+  def warn_on_live_teams_server?() do
+    Application.get_env(:livebook, :warn_on_live_teams_server, false)
+  end
+
   ## Parsing
 
   @doc """

lib/livebook/teams/org.ex

@@ -49,7 +49,7 @@ defmodule Livebook.Teams.Org do
     |> cast(attrs, @fields)
     |> validate_required(@required_fields)
     |> validate_format(:name, ~r/^[a-z0-9][a-z0-9\-]*$/,
-      message: "should only contain alphanumeric characters and dashes"
+      message: "should only contain lowercase alphanumeric characters and dashes"
     )
   end
 

lib/livebook_web/live/hub/new_live.ex

@@ -15,13 +15,10 @@ defmodule LivebookWeb.Hub.NewLive do
 
   @impl true
   def mount(_params, _session, socket) do
-    enabled? = Livebook.Config.feature_flag_enabled?(:create_hub)
-
     socket =
       assign(socket,
         selected_option: "new-org",
         page_title: "Hub - Livebook",
-        enabled?: enabled?,
         requested_code: false,
         org: nil,
         verification_uri: nil,
@@ -36,44 +33,14 @@ defmodule LivebookWeb.Hub.NewLive do
   end
 
   @impl true
-  def render(%{enabled?: false} = assigns) do
-    ~H"""
-    <LayoutHelpers.layout current_page="/hub" current_user={@current_user} saved_hubs={@saved_hubs}>
-      <div class="p-4 md:px-12 md:py-7 max-w-screen-md mx-auto space-y-6">
-        <div>
-          <LayoutHelpers.title text="Livebook Teams is coming soon!" />
-          <p class="mt-4 text-gray-700">
-            Livebook Teams will amplify Livebook with features designed for teams and businesses.
-          </p>
-        </div>
-        <p class="text-gray-700">
-          It will allow you to share notebooks, manage secrets, and deploy Livebook apps within your organization.
-        </p>
-        <p class="text-gray-700">
-          The product is still in development. We want to get feedback from beta users and understand
-          their use cases before the public launch.
-        </p>
-        <p class="text-gray-700">
-          <a
-            class="font-medium underline text-gray-900 hover:no-underline"
-            href="https://livebook.dev/teams?ref=LivebookApp"
-            target="_blank"
-          >
-            Learn more about Livebook Teams
-          </a>
-          and join the beta program.
-        </p>
-        <p class="text-gray-700">
-          - The Livebook crew
-        </p>
-      </div>
-    </LayoutHelpers.layout>
-    """
-  end
-
   def render(assigns) do
     ~H"""
     <LayoutHelpers.layout current_page="/hub" current_user={@current_user} saved_hubs={@saved_hubs}>
+      <LayoutHelpers.topbar :if={Livebook.Config.warn_on_live_teams_server?()} variant={:warning}>
+        <strong>Beware!</strong>
+        You are running Livebook in development but this page communicates with production servers.
+      </LayoutHelpers.topbar>
+
       <div class="flex flex-col p-4 md:px-12 md:py-7 max-w-screen-md mx-auto space-y-8">
         <div>
           <LayoutHelpers.title text="Add Hub" />