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Tue, 05 Sep 2023 12:01:08 -0700 (PDT) From: Simon Tournier In-Reply-To: <87fs3tobju.fsf@gnu.org> References: <87bkejc7go.fsf@inria.fr> <87fs3tobju.fsf@gnu.org> Date: Tue, 05 Sep 2023 20:59:07 +0200 Message-ID: <86edjcqwec.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: bug-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN X-Migadu-Scanner: mx2.migadu.com X-Spam-Score: -5.12 X-Migadu-Queue-Id: 20607307D4 X-Migadu-Spam-Score: -5.12 X-TUID: hZkn6jvOJ2i9 Hi, On Mon, 04 Sep 2023 at 23:47, Ludovic Court=C3=A8s wrote: >> It would seem that libgit2 doesn=E2=80=99t do the equivalent of =E2=80= =98git gc=E2=80=99. > > Confirmed: . Ouch! The goals of the project haven't changed, and neither have the tradeoffs. If one were to rewrite git-gc on top of libgit2, the best-case scenario is ending up with what we already had. If you want to use regular maintenance on some repostories, use git gc, that's what it's there for. https://github.com/libgit2/libgit2/issues/3247#issuecomment-1525080= 40 > My inclination for the short term would be to work around this > limitation by (1) finding a heuristic to determine is a checkout has > likely accumulated too much cruft, and (2) considering such checkouts > as expired (thereby forcing a re-clone) or running =E2=80=98git gc=E2=80= =99 on them if > =E2=80=98git=E2=80=99 is available. About (1) maybe we could add a =E2=80=9Ccounter=E2=80=9D and teach after X = updates of the checkout then let run (2). Well, I guess the number of crufts is more or less proportional with the number of checkout updates; that=E2=80= =99s the heuristic I would use. The most annoying is (2). Because forcing a re-clone does not appear to me a solution; I prefer to waste disk space (and probably run myself and manually =E2=80=98git gc=E2=80=99) than re-clone=E2=80=A6 Somehow this re-c= lone would always happen when I am using a poor network. Moreover, assuming this clean-up (2) would be run once every while, we could imagine to invoke something like, guix shell -C git-minimal -- git -C ~/.cache/guix/checkouts/pjmkglp4t7znuugeurpurzikxq3tnlaywmisyr2= 7shj7apsnalwq gc when the checkout is updated. And maybe we could provide another =E2=80=9C= guix pull=E2=80=9D command-line option for turning off this and mark it as done (reset the =E2=80=9Ccounter=E2=80=9D). Well, that=E2=80=99s a poor solution but we can assume that git-minimal is = at worse available using =E2=80=9Cguix shell git-minimal=E2=80=9D. Note that = the closure of git-minimal is far less than re-cloning the full Guix repository. Cheers, simon