[llvm-dev] arc patch with the new git workflow

[Mehdi AMINI via llvm-dev]

Hi,

Are you trying to apply a revision that was uploaded to Phabricator from
one of the individual repository (or from SVN)?
The issue if I remember correctly is that a patch uploaded from an SVN
checkout would not start with `llvm/` or `clang/` and wouldn't be able to
be applied in the monorepo. Conversely, a revision created from the
monorepo can't be applied by `arc patch` in a single subproject checkout.
I don't think there is a way around this, maybe `--strip-prefix` and
`--add-prefix` options could be added to `arc patch`, but I'm not sure it
would fit the expectation of `arc` upstream.

-- 
Mehdi


On Fri, Feb 8, 2019 at 10:42 AM Nicolas Lesser via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi all,
>
> The Phabricator docs seem to say that downloading a patch goes with `arc
> patch`. However, I tried it on several revisions and they all fail with:
>
> Checking patch some/path/to/a/file/that/exists ...
> error: some/path/to/a/file/that/exists: does not exist in index
>
> With the svn repo I found that command to be really useful. But now it
> seems like I have to download the patch manually, create a new branch,
> apply it and create a commit for it. Having `arc patch` would be a really
> great improvement to that - since it also does arc specific stuff I believe
> that I can't do manually (like arc diff telling me which patch to commit).
>
> Is there a way I can make it work?
>
> Thanks
> P.S: I'm not on llvm-dev list, so any replies would have to mention my
> email I guess :)
> - Nicolas
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> llvm-dev at lists.llvm.org
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