[Tex/LaTex] Two column minted listing inside tcolorbox

Question

I have a quite long but narrow code I want to typeset inside a tcolorbox.
Is it possible to enable a two (or more) column mode inside the box (not break the box and set the parts adjacent). The remaining part of the document is single-column.
If possible I would like it to still be floatable if enabled, it doesn't need to be breakable.

EDIT: it seems not to be enough to escape \tcblower from the minted part. I tried it with the listings package and it just broke the layout.

\documentclass{report}
\usepackage{tcolorbox}
\tcbuselibrary{minted}
\usepackage{blindtext}
\begin{document}
\blindtext
\begin{tcblisting}{title=This is source code in another language (XML),
minted language=XML,listing only}
<project 
    name="Package tcolorbox" 
    default="documentation" 
    basedir="."
    >
</project>
<project 
    name="Package tcolorbox" 
    default="documentation" 
    basedir="."
    >
</project>
<project 
    name="Package tcolorbox" 
    default="documentation" 
    basedir="."
    >
</project>
\end{tcblisting}
\blindtext
\end{document}

Answer 1

It's not perfect (I personally don't like how the code cuts mid tag) but it should do the job.

Basically, I unpacked the tcblisting environment and added a multicols environment.

\documentclass{report}
\usepackage{tcolorbox}
\tcbuselibrary{minted}
\usepackage{blindtext}
\usepackage{multicol} % added package
\begin{document}
\blindtext
\begin{tcolorbox}[title=This is source code in another language (XML)]
  %add special color box to list of listings
  \makeatletter
  \addcontentsline{lol}{subsection}{\kvtcb@title}
  \makeatother

  \begin{multicols}{2}
    \begin{minted}{xml}

      <project 
      name="Package tcolorbox" 
      default="documentation" 
      basedir="."
      >
      </project>
      <project 
      name="Package tcolorbox" 
      default="documentation" 
      basedir="."
      >
      </project>
      <project 
      name="Package tcolorbox" 
      default="documentation" 
      basedir="."
      >
      </project>
    \end{minted}
  \end{multicols}
\end{tcolorbox}
\blindtext
\end{document}