[darcs-users] darcs error: "cannot handle mergers" ??

Trent W. Buck trentbuck at gmail.com
Tue Mar 24 22:38:17 UTC 2009

Eric Kow <kowey at darcs.net> writes:

> Hi Steve and David,
> On Mon, Mar 23, 2009 at 06:44:56 -0400, Steven G. Johnson wrote:
>> I recompiled darcs 1.0.9 with this patch (added right after the Merger _ 
>> "0.9" line), and re-ran darcs optimize --modernize, but darcs version 
>> 2.0.2 still gives the same error message, unfortunately.
> Thanks for trying.
> I've established that the --modernize-patches first appeared in darcs
> 1.0.4... which I wasn't able to build with GHC 6.6.1.
> So right now, our easy options right now are to (a) look for a later
> version of darcs which still knows how to modernize those particular
> mergers and which compiles with a relatively recent GHC or (b) find a
> way to install GHC 6.4 on your machine (c) somehow convince darcs
> 1.0.4 to build with a relatively modern GHC (say 6.6).

There are binaries for 1.0.4 for Debian here:


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