anchor.diff:      };
       swiftpm = fetchSwiftRelease {
         repo = "swift-package-manager";
  -      sha256 = "0hdjvb2asfi6h3x9bjssxkc3bgjn3idlmyga3dl3lscfq88hjxr9";
  +      sha256 = "0z90mg837jzwh516pypn48r3wsjf0lqymsyigdhgr7j2sgcckrr1";
       };
       syntax = fetchSwiftRelease {
         repo = "swift-syntax";
  
positive.code:   # - integration-tests
  
    versions = {
      swift = "5.5.2";
      yams = "4.0.2";
      argumentParser = "0.4.3";
      format = "swift-5.5-branch";
  
negative.code:     };
      corelibsFoundation = fetchSwiftRelease {
        repo = "swift-corelibs-foundation";
        sha256 = "06gkdliihl1l86jx5khzwkjmjk45fq290x033rscramzcdxh7d1b";
      };
      corelibsLibdispatch = fetchSwiftRelease {
        repo = "swift-corelibs-libdispatch";
  