title: Flutter packages get does not install new package
body: <p>I'm trying to install a package (dynamic_theme) in flutter. When I run <code>flutter packages get -v</code> it does not even try to install the package.</p>
  
  <p>So far I've tried:</p>
  
  <ul>
  <li>Running <code>flutter packages get</code></li>
  <li>Running <code>flutter packages get</code></li>
  <li>Restarting my computer</li>
  <li>Updated flutter</li>
  <li>Added another package but that did not install either</li>
  <li>Updated Android Studio</li>
  </ul>
  
  <p>In my pubspec.yaml I've put:</p>
  
  <pre><code>dependencies:
    flutter:
      sdk: flutter
    firebase_core:
    cupertino_icons: ^0.1.2
    dynamic_theme: ^1.0.1 # the package does not install
    uuid: 2.0.0 # the package does not install
  </code></pre>
  
  <p>In the logs for the verbose run of <code>flutter packages get</code> where it installs the packages it outputs:</p>
  
  <pre><code>[ +422 ms] Running "flutter packages get" in quiz_app... (completed in 0.4s)
  [  +57 ms] Found plugin firebase_core at E:\Other\SDKs\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_core-0.3.4\
  [  +13 ms] Found plugin shared_preferences at E:\Other\SDKs\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.2\
  [ +141 ms] Found plugin firebase_core at E:\Other\SDKs\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_core-0.3.4\
  [   +6 ms] Found plugin shared_preferences at E:\Other\SDKs\flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.2\
  [  +26 ms] "flutter get" took 718ms.
  </code></pre>
  
  <p>I expected that flutter downloaded and installed the packages, but it does just check for updates on the already installed packages like <code>firebase_core</code>.</p>