chore: move versions script to its own file

Author: doorgan

apps/expert/lib/expert/engine_node.ex

@@ -168,8 +168,9 @@ defmodule Expert.EngineNode do
     # we have the right version downloaded, and if not, we should download it.
     defp glob_paths(%Project{} = project) do
       {:ok, elixir, _} = Expert.Port.elixir_executable(project)
+      versions_script = Path.join([:code.priv_dir(:expert), "get_versions.exs"])
 
-      {output, _} = System.cmd(elixir, ["-e", get_versions_code()])
+      {output, _} = System.cmd(elixir, [versions_script])
 
       case output |> String.trim() |> String.split("-") do
         [elixir_vsn, erlang_vsn] ->
@@ -188,27 +189,6 @@ defmodule Expert.EngineNode do
       end
     end
 
-    defp get_versions_code() do
-      ~S"""
-      major = :otp_release |> :erlang.system_info() |> List.to_string()
-      version_file = Path.join([:code.root_dir(), "releases", major, "OTP_VERSION"])
-
-      erlang_vsn =
-        try do
-          {:ok, contents} = File.read(version_file)
-          String.split(contents, "\n", trim: true)
-        else
-          [full] -> full
-          _ -> major
-        catch
-          :error ->
-            major
-        end
-
-      IO.puts("#{System.version()}-#{erlang_vsn}")
-      """
-    end
-
     defp find_engine_build(elixir_vsn, erlang_vsn) do
       user_data_path = :filename.basedir(:user_data, "Expert", %{version: Expert.vsn()})
       engine_path = Path.join([user_data_path, "engine", "*-otp-*"])

apps/expert/priv/fetch_versions.exs

@@ -0,0 +1,16 @@
+major = :otp_release |> :erlang.system_info() |> List.to_string()
+version_file = Path.join([:code.root_dir(), "releases", major, "OTP_VERSION"])
+
+erlang_vsn =
+  try do
+    {:ok, contents} = File.read(version_file)
+    String.split(contents, "\n", trim: true)
+  else
+    [full] -> full
+    _ -> major
+  catch
+    :error ->
+      major
+  end
+
+IO.puts("#{System.version()}-#{erlang_vsn}")