[darcs-devel] [issue2479] BUG: Error descending in modifyTree

[Ganesh Sittampalam]

Ganesh Sittampalam <ganesh at earth.li> added the comment:

>From a bit of experimenting, the problem comes from the inclusion of the '.' folder in the 
list of things to move. If you try `darcs mv . a` you get a proper error:

    darcs-ghc710:[ganesh at paxton:~/temp/d]$ darcs mv . ./b

    darcs failed:  Cannot move the root of the repository

I'm not sure that `$(darcs list files)` is the right thing to do here anyway. You only need 
to move the top-level items to `a`. Everything else would be moved implicitly anyway.

Unfortunately `darcs mv * a` doesn't work either because it tries to move `a`, so I can't 
think of a clean way to do what you want.

In any case the actual error you're getting is clearly a bug we should fix to produce the 
error message about not being able to move the root.

I guess darcs could also filter out the invalid things being requested and just move the 
valid things. That might be a bit harder to implement.

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status: unknown -> needs-diagnosis/design

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<http://bugs.darcs.net/issue2479>
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