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[34.105.102.170]) by smtp.gmail.com with ESMTPSA id p11-20020a654bcb000000b0050376cedb3asm1448662pgr.24.2023.04.20.12.52.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Apr 2023 12:52:55 -0700 (PDT) Sender: Junio C Hamano From: Junio C Hamano To: Taylor Blau Cc: git@vger.kernel.org, Jeff King , Derrick Stolee Subject: Re: [PATCH] builtin/pack-objects.c: introduce `pack.extraCruftTips` References: <8af478ebe34539b68ffb9b353bbb1372dfca3871.1682011600.git.me@ttaylorr.com> Date: Thu, 20 Apr 2023 12:52:55 -0700 In-Reply-To: (Taylor Blau's message of "Thu, 20 Apr 2023 15:30:05 -0400") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Taylor Blau writes: >> But it makes me wonder if it would make the life of end-users simpler >> if we reserve a special ref hierarchy, say "refs/crufts/*", than >> having to write a program for doing something like this. > > Ideally, yes. But I think there are certain instances where there are > far too many (disconnected) objects that creating a reference for each > part of the unreachable object graph that we want to keep is infeasible. > > Another way to think about pack.extraCruftTips is that the program > invocation is acting like the refs/crufts hierarchy would if it existed, > but without actually having to write all of those references down. I do not need another way, actually. If it is infeasible to keep track of what we want to keep from expiration because they are too numerous and disconnected, I have to wonder how a programatic way to enumerate them is feasible, especially the enumeration is for doing something useful. You can write a program that enumerates all the loose objects and existing object names that appear in .idx files and such a program will cover "everything is too disconnected" case, but that does not count as a useful use case---disabling cruft expiration would achieve the same thing. Is there a less hand-wavy use case you have in mind? THanks.