Fix Elixir 1.19 warnings

Author: fhunleth

lib/circuits_quickstart/application.ex

@@ -26,7 +26,7 @@ defmodule CircuitsQuickstart.Application do
       ssid = kv["wifi_ssid"]
       passphrase = kv["wifi_passphrase"]
 
-      unless empty?(ssid) do
+      if !empty?(ssid) do
         _ = VintageNetWiFi.quick_configure(ssid, passphrase)
         :ok
       end

mix.exs

@@ -28,8 +28,7 @@ defmodule CircuitsQuickstart.MixProject do
       archives: [nerves_bootstrap: "~> 1.10"],
       start_permanent: Mix.env() == :prod,
       deps: deps(),
-      releases: [{@app, release()}],
-      preferred_cli_target: [run: :host, test: :host]
+      releases: [{@app, release()}]
     ]
   end
 
@@ -40,6 +39,10 @@ defmodule CircuitsQuickstart.MixProject do
     ]
   end
 
+  def cli do
+    [preferred_targets: [run: :host, test: :host]]
+  end
+
   defp deps do
     [
       # Dependencies for all targets