Problem 1 --------- > Darcs has just gone into an infinite loop, when doing a 'pull' of a > few dozen patches from GHC's HEAD repository into a partial repository > on my laptop.
I'm going to shift discussion of that patch to http://bugs.darcs.net/issue378 Side note --------- > sh-2.04$ darcs get http://darcs.haskell.org/ghc --repo-name HEAD > > -- Wait 1.5 hrs for darcs to download 15,000 patches One not-very-nice way to avoid this is to make a tarball, copy that tarball by hand, and darcs get from untarred directory. This also side-steps the unapplicable patch problem below, because darcs does not attempt to do its patch work. This is not very useful for day-to-day operations like darcs pull, but for an initial 'get', it might be worthwhile. Problem 2 --------- > darcs failed: Error applying hunk to file ./ghc/includes/rtsTypes.lh > Unapplicable patch: > Thu Jan 11 14:26:13 GMT Standard Time 1996 partain > * [project @ 1996-01-11 14:06:51 by partain] For what it's worth, I get the same problem with darcs 1.0.9rc2 on my Mac. The problem seems to be that the patch attempts to remove a file ./ghc/includes/rtsTypes.lh This is normally fine; however, previous patches had created the files ./ghc/includes/RtsTypes.lh ./ghc/includes/rtsTypes.lh I'm betting that if you did the same thing on a case-sensitive file system, everything is ok. On machines with case-insensitive files systems, e.g. my Mac, darcs does the wrong thing. Darcs tries to avoid this possibility by warning you when you add a file that has the same name, modulo case (either this is relatively new in darcs, or the --case-ok override was used). It would be good if darcs had a a more robust treatment of such cases, because shit does happen (and people do use --case-ok). What that treatment would be, I do not know. See http://bugs.darcs.net/issue53 for some prior discussion on the matter. The workaround used by the HaXmL developers is to use --partial, but sadly, this has other problems! It seems also that what the darcs universe really needs is a darcs-firstaid kit which will let you swap out a bad patch for an almost equivalent "good" one. For example, the bad patch in question might be the patch that adds RtsTypes.lh, and its swapee might be the same, sans that file. This would normally be a dangerous thing (I presume), and people might need to re-do their darcs get because the patch in question and the subsequent patches are no longer the same (???), but it would save some users a lot of grief in the here and now. Such a tool could also help with things like Kirsten was suggesting on the mailing list (i.e. patch swapping might just be one of the elements of the kit, hunting down conflict-prone patches might be another) -- Eric Kow http://www.loria.fr/~kow PGP Key ID: 08AC04F9 Merci de corriger mon français.
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