\begin{frame}{Interfacing with Git}
  Need to work on a Git repository? Try \ext{hg-git}!
  \begin{itemize}
  \item Mercurial extension: you get the nice \cmd{hg} command line
  \item round-tripping: changeset hashes are preserved
  \end{itemize}

  % TODO: add colors, improve boxes.
  \begin{center}
    \begin{tikzpicture}
      \tikzstyle{every node}=[repository, minimum height=16mm, text width=12mm,]
      \tikzstyle{every path}=[<->, short]

      \node (a) at ( 90:2) {Git};
      \node (b) at (210:2) {Hg};
      \node (c) at (-30:2) {Hg};
      \draw (a) -- (b);
      \draw (b) -- (c);
      \draw (c) -- (a);
    \end{tikzpicture}
  \end{center}
\end{frame}