anchor.diff:          sha512 = "fQRc4+RG+rEw1IdjFx/5t2AvOlJT8ktv2dfObD3aW838ohZxCx1QvFUY/Gdx5JA1JY/KrHRGuEqQLH9ayiexyg==";
         };
       };
  -    "@expo/dev-tools-0.2.13" = {
  +    "@expo/dev-tools-0.2.16" = {
         name = "_at_expo_slash_dev-tools";
         packageName = "@expo/dev-tools";
  -      version = "0.2.13";
  -      src = fetchurl {
  -        url = "https://registry.npmjs.org/@expo/dev-tools/-/dev-tools-0.2.13.tgz";
  -        sha512 = "3OyFQMpOMyMDvANAaztkHOvFxbe8wN77ooy0L7wz8xuSmRq06jaav7IAVXNodHjasWyDC4stdthr9Kxb9I2+QA==";
  +      version = "0.2.16";
  +      src = fetchurl {
  +        url = "https://registry.npmjs.org/@expo/dev-tools/-/dev-tools-0.2.16.tgz";
  +        sha512 = "n9WodkdMi0wYi0D0O9C5dDpQNirb3Duqps6oyXC+pc4LCrkG810dmvay69b37ka2h7wg8jFSzRnt5Wot9GOsMQ==";
         };
       };
       "@expo/json-file-8.1.0" = {
  
positive.code:   expo-cli = nodeEnv.buildNodePackage {
      name = "expo-cli";
      packageName = "expo-cli";
      version = "2.4.0";
      src = fetchurl {
        url = "https://registry.npmjs.org/expo-cli/-/expo-cli-2.4.0.tgz";
        sha512 = "Z4EWLDnn1LBcDdg3Gwq5VAc/2IeAhnoqNdgzxYMYAxYTPxbuvxEvu7UtnYkVsy6AylHdPWVCIv7uDX0D/Qr98A==";
      };
      dependencies = [
        sources."@babel/code-frame-7.0.0"
  
negative.code:         sha1 = "a5c6d532be656e23db820efb943a1f04998d63af";
        };
      };
      "yallist-3.0.3" = {
        name = "yallist";
        packageName = "yallist";
        version = "3.0.3";
        src = fetchurl {
          url = "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz";
          sha512 = "S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==";
        };
      };
      "zen-observable-0.8.11" = {
  