Here is my current progress on porting import of file moves
from Owen's darcs-bridge. It is a feature that would help
create much better darcs imports (one can see in any big git repository
that file moves often happen: `git fast-export -M | grep "^R "`).

I need help with the compilation errors I'm getting:

<http://lpaste.net/4673015084807618560>

To port the code I looked, in the repository [1], at the following diff:

    darcs diff --from-hash b138854b72  --to-hash dd804b514f0

Which contains two patches (the first one changing InCommit so that it
contains an RL, and the second one that parses and interpret file moves).

I also looked at the latest recorded state of the darcs-bridge repository.

[1] http://hub.darcs.net/owst/darcs-bridge-export-branch

1 patch for repository http://darcs.net:

patch 0d401b983e53a52e3f8892425bb0f41c81b2292d
Author: Guillaume Hoffmann <guillaumh@gmail.com>
Date:   Fri Jan 22 16:20:56 ART 2016
  * WIP handle file moves when importing from git

Attachments

• patch-preview.txt
• unnamed
• wip-handle-file-moves-when-importing-from-git.dpatch

The correct command to see file moves is:

    git fast-export HEAD -M | grep "^R "

The file that does not compile:

<http://hub.darcs.net/gh/darcs-screened_1/browse/src/Darcs/UI/Commands/Convert.hs>

Patch now compiles, but it breaks the existing test on
deleting empty directories during import.


1 patch for repository http://darcs.net:

patch 05cc941e4a6e57a87a6c27b39f677942a8aaa27d
Author: Guillaume Hoffmann <guillaumh@gmail.com>
Date:   Fri Jan 22 16:52:57 ART 2016
  * WIP handle file moves when importing from git

Attachments

• patch-preview.txt
• unnamed
• wip-handle-file-moves-when-importing-from-git.dpatch

A working version.

I tested it with various git repositories I had on my
machine (cryptol, pandoc, gitit, git, ghc, learn you a haskell)
which helped me found cases where the interaction between file moves
and new directories could be problematic. Also (and unlike Owen's
darcs-bridge if I'm not mistaken), this current code does delete empty
directories after a file move.

In the shell tests, after converting to darcs it is important
to run "darcs check" since I had cases where I made the import code
create inconsistent pristines.

I've added an explicit dependency on the patch that modifies RL. This also
implies that the bundle will not make it to branch 2.10.

3 patches for repository http://darcs.net:

patch 21d147a476e4db70e66bc26d1259742f1f2f1215
Author: Guillaume Hoffmann <guillaumh@gmail.com>
Date:   Mon Jan 25 11:21:11 ART 2016
  * tests related to git import of file moves

patch ccaa9c41ffc77ee08eba120ca33ef47bbbc4a5a6
Author: Guillaume Hoffmann <guillaumh@gmail.com>
Date:   Mon Jan 25 11:22:08 ART 2016
  * recommend using -M flag on git fast-export

patch 2a6b06f9a17ec0bcf28cb164684e6c678bc86631
Author: Guillaume Hoffmann <guillaumh@gmail.com>
Date:   Mon Jan 25 11:40:46 ART 2016
  * handle file moves and copies when importing from git
  Ported from Owen Stephen's darcs-bridge

Attachments

• patch-preview.txt
• tests-related-to-git-import-of-file-moves.dpatch
• unnamed

Tried again with curl's git repository (HEAD), succesfully created a >
20K darcs repo with file moves). Self-accept.