title: pub get failed. exit code 65. flutter
body: <p>Everything is ok. every package is working. but the shimmer package not working.
  <a href="https://i.stack.imgur.com/MBEKb.png" rel="nofollow noreferrer">this is my implementation.</a></p>
  <pre><code>version: 1.0.0+1
  environment:
    sdk: &quot;&gt;=2.12.0 &lt;3.0.0&quot;
  
  dependencies: 
    flutter:
      sdk: flutter
    shimmer:
    cupertino_icons: ^1.0.2 
  
  dev_dependencies:
    flutter_test:
      sdk: flutter 
  </code></pre>
  <hr />
  <p>error:</p>
  <pre><code>[shimmer] flutter pub get
  Running &quot;flutter pub get&quot; in shimmer...                         
  Error on line 26, column 3 of pubspec.yaml: A package may not list itself as a dependency.
  
     ╷
  
  
  26 │   shimmer:
     │   ^^^^^^^
  
     ╵
  pub get failed (65;    ╵)
  exit code 65
  </code></pre>