clive@CLIVE-WXP ~/repository/vultures
$ darcs optimize +RTS -M1G -RTS --verbose --checkpoint --reorder-patches
Reordering the inventory.
Writing out a nice copy of the inventory.
Checkpointing tag:
Thu Nov 10 18:34:58 South Africa Standard Time 2005  Clive Crous
<clive@darkarts.co.za>
  tagged 1.10.1
darcs.exe: bug in darcs!
fromJust error at DarcsRepo.lhs:507 compiled 18:16:41 Dec  5 2005
Please report this to bugs@darcs.net,
If possible include the output of 'darcs --exact-version'.

clive@CLIVE-WXP ~/repository/vultures
$ darcs --exact-version
darcs compiled on Dec  5 2005, at 18:28:08
# configured Mon Dec  5 18:03:48 USMST 2005
./configure --disable-mmap

Context:

[TAG 1.0.5rc2
Tommy Pettersson <ptp@lysator.liu.se>**20051204152416]

clive@CLIVE-WXP ~/repository/vultures
$ darcs --version
1.0.5rc2 (release candidate )

Thanks for the bug report.  Could you please try the same command with the
current stable release -- 1.0.5?

Regards,

Zooko

#
# Zooko <zooko@zooko.com> added the comment:
#
# Thanks for the bug report.  Could you please try the same command with the
# current stable release -- 1.0.5?
#
# Regards,
#
# Zooko
#

I get exactly the same output on FreeBSD with 1.0.5 stable final release

Is this a partial repo by any chance?

For the record, it appears that get_patches_in_tag returns Nothing in the second
component.  If this is a partial repo, it's a missing feature (although the lack
of a useful error message is a bug).  If it's not partial, that's definitely a
bug.

Yes, it is a partial repo

When the error message is fixed, this should be degraded to wishlist status.

I believe this is "resolved-in-unstable", because the darcs-2 format doesn't
have checkpointing. See discussion and test in issue517.