bug#53194: System test partition.img differs in size across hosts(?)

[Leo Famulari]

On Tue, Jan 11, 2022 at 08:44:11PM +0100, Tobias Geerinckx-Rice via Bug reports 
for GNU Guix wrote:
> The most likely culprit is a change or difference in how the kernel answers
> FILE-SIZE's ‘how much disc space does FILE consume?’ — rounding it to N
> blocks or bytes, including or excluding directory sizes, differing reported
> directory sizes, etc.

I'm going to build the version of the kernel used on berlin and test
with that.

I do find myself wondering if something in Guix is measuring the wrong
thing: maybe we are measuring the size of files compressed in transit,
rather than their uncompressed size on disk. Or something like that.