Re: [Haskell-cafe] darcs to mercurial migration

On Fri, May 7, 2010 at 2:29 AM, Nicolas Pouillard < nicolas.pouillard@gmail.com> wrote:

On Thu, 06 May 2010 01:08:08 +0200, Günther Schmidt wrote:

...

Hello,

I'm switching from darcs to mercurial with some of my projects.

I'd like to retain as much of the history as possible, what tools are there available for this?

I recommend you darcs-fast-export and then use the/a mercurial fast-import.

http://vmiklos.hu/project/darcs-fast-export/

Does this tool use libdarcs to read the darcs repository data and metadata? I see the claim that it is correct on the page you linked to:

Correct

darcs-fast-export produces correct results in any extreme cases. It has been tested with a collection of large darcs repos (called big-zoohttp://code.haskell.org/darcs/big-zoo/). And several testcases under the t/ directory.

The correctness argument is solely based on testing of the conversion on repositories? If so, how can it remain correct when darcs changes the format or semantics of its data? Tailor on the other hand, invokes the various vcs directly and transfers the diffs between the repositories. This seems inherently safer to me. Jason