Warning on Elixir v1.14 about bunt HOT 5 CLOSED

Do you have any idea how to fix this?

I wrapped the code in question in a Version.match/2 if-clause, but still get the exact same warning (for the code in the else block):

  if Version.match?(System.version(), ">= 1.14.0-dev") do
    @color_aliases Application.compile_env(:bunt, :color_aliases, [])
  else
    @color_aliases Application.get_env(:bunt, :color_aliases, [])
  end

from bunt.

Do you have any idea how to fix this?

Not yet ; I wonder if the simple presence of the code in the AST is enough to raise the warning, in which case there wouldn't be a solution.

I am concerned that Elixir 1.14 would be released without this solved, actually. Maybe it's worth raising the point on the Elixir forum or at the right place, if you know one such place?

from bunt.

I believe https://elixirforum.com/t/elixir-v1-14-0-rc-1-released/49581 is the right place, actually!

from bunt.

If you want to maintain compatibility for elixir < 1.10 you can use a macro:

defmodule Helper do
  defmacro compile_env(app, key, default) do
    if Version.match?(System.version(), ">= 1.10.0") do
      quote do
        Application.compile_env(unquote(app), unquote(key), unquote(default))
      end
    else
      quote do
        Application.get_env(unquote(app), unquote(key), unquote(default))
      end
    end
  end
end

defmodule A do
  require Helper
  @color_aliases Helper.compile_env(:elixir, :time_zone_database, [])
  # Only warns about the unused module attribute
end

from bunt.

This was published in v.0.2.1. 👍

from bunt.