anchor.diff:        owner = "mattermost";
         repo = "mattermost-server";
         rev = "v${version}";
  -      sha256 = "y3VTDl01UrMpgoN06lf98C+uTu2N9u0EAWYADPpOI3w=";
  +      sha256 = "cUeGjKutz6Yeq/cP7nYx0zPJ87GKOQWRyNSERzq/nPw=";
       };
   
       ldflags = [
  
positive.code: 
      src = fetchurl {
        url = "https://releases.mattermost.com/${version}/mattermost-${version}-linux-amd64.tar.gz";
        sha256 = "PqinkPC7J6Ng1fjTrcAa6ZqiyB2JKkGRdvJ6h2wNS5w=";
      };
  
      installPhase = ''
  
negative.code: , storePathAsBuildHash ? false }:
  
  let
    version = "6.3.1";
  
    goPackagePath = "github.com/mattermost/mattermost-server";
  
  