bug#39575: guix time-machine fails when a tarball was modified in-place

[Giovanni Biscuolo <g@xelera.eu>]

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Hello Ludo'

Ludovic Courtès <ludo@gnu.org> writes:

[...]

> The problem here is really that we fall back to content-addressed
> mirrors instead of using them directly:
>
>   https://issues.guix.gnu.org/issue/28659

Given the natute (AFAIU) of this issue is the very same of the bug you
mention, shouldn't this bug be merged (forcemerged?) whith #28659?

If you agree and have no time, I can try doing this

> The file itself is still available on our machines though, and you can
> get it with:
>
>   guix download -o harfbuzz-2.4.0.tar.bz2 \
>   https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/0vrkvdlmihdg62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l
>
>   guix download file://$PWD/harfbuzz-2.4.0.tar.bz2
>
> After that, re-running ‘guix time-machine’ should work.

Does make it sense to make this workaround more general and add this as
a Cookbook or blog entry? If the patch you propose in #28659 solve any
issue and is ready to be merget of course it's not worth the effort

[...]

Thanks! Gio'

-- 
Giovanni Biscuolo

Xelera IT Infrastructures

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