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

[James Y Knight via llvm-dev]

Personally I'd like a "git llvm fetch-diff D1234" subcommand, which outputs
a patch in the format of "git format-patch", which, you could then pipe to
"git am", say, providing whatever prefix options you like.

On Fri, Feb 8, 2019 at 2:41 PM Mehdi AMINI via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> 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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>>
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