GNU bug report logs - #74862
`tests/store-deduplication.scm` fails on Asahi Linux

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From: Lukas Navickas <l.navickas@HIDDEN>
Subject: `tests/store-deduplication.scm` fails on Asahi Linux
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`copy-file/deduplicate, sparse files` tests fail on asahi linux.

i do not have adequate grounding on this topic, but i made a few empirical =
tests changing the inputs.

the original tests create a file in `/tmp`, and fail.
if instead the file is on disk, some(all?) tests pass.
if instead the inputs are changed from 2*4096 to 2*16834, some tests pass.

tmpfs on apple silicon has a block size of 16834. i'm guessing this corresp=
onds to its RAM page size.

i'm inferring that this test has a hidden dependency: the block size of the=
 underlying filesystem that contains the tested files. it may be desirable =
to account for this dependency.