anchor.diff:        '';
         meta = with stdenv.lib; {
           description = "Evolve your Database Schema easily and reliably across all your instances";
  +        longDescription = ''
  +          The Flyway command-line tool is a standalone Flyway distribution.
  +          It is primarily meant for users who wish to migrate their database from the command-line
  +          without having to integrate Flyway into their applications nor having to install a build tool.
  +
  +          This package is only the Community Edition of the Flyway command-line tool.
  +        '';
           homepage = "https://flywaydb.org/";
           license = licenses.asl20;
           platforms = platforms.unix;
  
positive.code: { stdenv, fetchurl, jre_headless, makeWrapper }:
    let
      version = "5.2.4";
    in
      stdenv.mkDerivation {
        pname = "flyway";
        inherit version;
        src = fetchurl {
          url = "https://repo1.maven.org/maven2/org/flywaydb/flyway-commandline/${version}/flyway-commandline-${version}.tar.gz";
          sha256 = "16ia6nlvj4cgmdkn66bjg73h5vah82hpzk9mf0n5kmqnwcaa8hmc";
        };
        nativeBuildInputs = [ makeWrapper ];
        dontBuild = true;
  
negative.code:       installPhase = ''
          mkdir -p $out/bin $out/share/flyway
          cp -r sql jars drivers conf $out/share/flyway
          install -Dt $out/share/flyway/lib lib/community/*.jar lib/*.jar
          makeWrapper "${jre_headless}/bin/java" $out/bin/flyway \
            --add-flags "-Djava.security.egd=file:/dev/../dev/urandom" \
            --add-flags "-classpath '$out/share/flyway/lib/*:$out/share/flyway/drivers/*'" \
  