\TestPackage{covington}
\TestPackage{cprotect}
\TestPackage{csquotes}
+\TestPackage{drs}
\TestPackage[koi8-r.def]{cyrillic}
\TestPackage{dvipost}
\TestPackage{endnotes}
\TestPackage{pdfcomment}
\TestPackage{pdfpages}
\TestPackage{pgf} % required by tcolorbox
+\TestPackage{pict2e}
\TestPackage{prettyref}
\TestPackage{preview}
\TestPackage{refstyle}