anchor.diff:  
       # Copy application.ini and modify
       cp assets/application.ini "$out/libexec/zotero/application.ini"
  -    perl -pi -e "s/{{VERSION}}/$version/" "$out/libexec/zotero/application.ini"
  -    perl -pi -e "s/{{BUILDID}}/$BUILDID/" "$out/libexec/zotero/application.ini"
  +    perl -pi -e "s/\{\{VERSION}}/$version/" "$out/libexec/zotero/application.ini"
  +    perl -pi -e "s/\{\{BUILDID}}/$BUILDID/" "$out/libexec/zotero/application.ini"
       perl -pi -e "s/^MaxVersion.*\$/MaxVersion=$GECKO_VERSION/" "$out/libexec/zotero/application.ini"
   
       # Copy prefs.js and modify
  
positive.code: { stdenv, fetchurl, bash, firefox, perl, unzipNLS, xorg }:
  
  let
  
  
negative.code:     unzip "${xpi}" -d "$out/libexec/zotero"
  
      BUILDID=`date +%Y%m%d`
      GECKO_VERSION="${lib.removeSuffix "esr" firefox.passthru.version}"
      UPDATE_CHANNEL="default"
  
      # Copy branding
  