Make Livebook version accessible at compile time

lib/livebook/config.ex

@@ -616,7 +616,7 @@ defmodule Livebook.Config do
   @doc """
   Returns the current version of running Livebook.
   """
-  def app_version, do: Application.spec(:livebook, :vsn) |> List.to_string()
+  def app_version(), do: Mix.Project.config()[:version]
 
   defp parse_connection_config!(config) do
     {node, cookie} = split_at_last_occurrence(config, ":")

lib/livebook/hubs/team_client.ex

@@ -85,7 +85,7 @@ defmodule Livebook.Hubs.TeamClient do
     derived_key = Teams.derive_key(team.teams_key)
 
     headers = [
-      {"x-lb-version", to_string(Application.spec(:livebook, :vsn))},
+      {"x-lb-version", Livebook.Config.app_version()},
       {"x-user", to_string(team.user_id)},
       {"x-org", to_string(team.org_id)},
       {"x-org-key", to_string(team.org_key_id)},

lib/livebook/teams/requests.ex

@@ -149,7 +149,7 @@ defmodule Livebook.Teams.Requests do
     token = "#{team.user_id}:#{team.org_id}:#{team.org_key_id}:#{team.session_token}"
 
     [
-      {"x-lb-version", to_string(Application.spec(:livebook, :vsn))},
+      {"x-lb-version", Livebook.Config.app_version()},
       {"authorization", "Bearer " <> token}
     ]
   end

lib/livebook_cli.ex

@@ -73,7 +73,7 @@ defmodule LivebookCLI do
     IO.puts(:erlang.system_info(:system_version))
     IO.puts("Elixir " <> System.build_info()[:build])
 
-    version = Application.spec(:livebook, :vsn)
+    version = Livebook.Config.app_version()
     IO.puts("\nLivebook #{version}")
   end
 end

lib/livebook_web/live/app_helpers.ex

@@ -141,9 +141,9 @@ defmodule LivebookWeb.AppHelpers do
 
   defp zta_options(), do: @zta_options
 
-  defp docker_tag_options() do
-    for image <- Livebook.Config.docker_images(), do: {image.tag, image.name}
-  end
+  @docker_tag_options for image <- Livebook.Config.docker_images(), do: {image.tag, image.name}
+
+  defp docker_tag_options(), do: @docker_tag_options
 
   @doc """
   Renders Docker deployment instruction for an app.

lib/livebook_web/live/layout_helpers.ex

@@ -94,7 +94,7 @@ defmodule LivebookWeb.LayoutHelpers do
                 </span>
               </.link>
               <span class="text-gray-300 text-xs font-normal font-sans mx-2.5 pt-3 cursor-default">
-                v<%= Application.spec(:livebook, :vsn) %>
+                v<%= Livebook.Config.app_version() %>
               </span>
             </div>
             <.sidebar_link title="Home" icon="home-6-line" to={~p"/"} current={@current_page} />

lib/livebook_web/live/settings_live.ex

@@ -60,7 +60,7 @@ defmodule LivebookWeb.SettingsLive do
                   <% end %>
                 </.labeled_text>
                 <.labeled_text label="Livebook">
-                  v<%= Application.spec(:livebook, :vsn) %>
+                  v<%= Livebook.Config.app_version() %>
                 </.labeled_text>
                 <.labeled_text label="Elixir">
                   v<%= System.version() %>