anchor.diff:    unpackCmd = "${dpkg}/bin/dpkg-deb -x $src debcontents";
   
     installPhase = ''
  +    runHook preInstall
       substituteInPlace usr/share/jicofo/jicofo.sh \
         --replace "exec java" "exec ${jre_headless}/bin/java"
   
  
positive.code:     mv etc $out/
      cp ${./logging.properties-journal} $out/etc/jitsi/jicofo/logging.properties-journal
      ln -s $out/share/jicofo/jicofo.sh $out/bin/jicofo
    '';
  
    passthru.tests = {
  
negative.code: { lib, stdenv, fetchurl, dpkg, jre_headless, nixosTests }:
  
  let
    pname = "jicofo";
  