Re: [PATCH gentoolkit] bin: Add merge-driver-ekeyword

Zac Medico <[email protected]> Thu, 31 Dec 2020 12:05:50 -0800

Newsgroups	gmane.linux.gentoo.portage.devel
Message-ID	<[email protected]>

On 12/31/20 11:47 AM, Matt Turner wrote:
> Since the KEYWORDS=... assignment is a single line, git struggles to
> handle conflicts. When rebasing a series of commits that modify the
> KEYWORDS=... it's usually easier to throw them away and reapply on the
> new tree than it is to manually handle conflicts during the rebase.
> 
> git allows a 'merge driver' program to handle conflicts; this program
> handles conflicts in the KEYWORDS=... assignment. E.g., given an ebuild
> with these keywords:
> 
> KEYWORDS="~alpha amd64 arm arm64 ~hppa ppc ppc64 x86"
> 
> One developer drops the ~alpha keyword and pushes to gentoo.git, and
> another developer stabilizes hppa. Without this merge driver, git
> requires the second developer to manually resolve the conflict which is
> tedious and prone to mistakes when rebasing a long series of patches.
> With the custom merge driver, it automatically resolves the conflict.
> 
> To use the merge driver, configure your gentoo.git as such:
> 
> gentoo.git/.git/config:
> 
> 	[merge "keywords"]
> 		name = KEYWORDS merge driver
> 		driver = merge-driver-ekeyword %O %A %B %P
> 
> gentoo.git/.git/info/attributes:
> 
> 	*.ebuild merge=keywords
> 
> Signed-off-by: Matt Turner <[email protected]>
> ---
> v3: Address Zac's feedback: use tempfile.TemporaryDirectory

Looks great!
-- 
Thanks,
Zac

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