[bug#44039] [PATCH] gnu: Add slade.

[Ludovic Courtès]

Hi,

Tobias Geerinckx-Rice <me@tobias.gr> skribis:

> The following made multiple builds on one machine identical, but was
> not consistent between file systems, probably due to readdir order:
>
> + (add-before 'build 'reset-slade.pk3-timestamps
> +   ;; This appears sufficient to make slade.pk3 reproducible.
> +   (lambda _
> +     (invoke "find" "../source/dist/res" "-exec" "touch"
> +             "--no-dereference" "-t" "197001010000.00" "{}" "+")))

It’s surprising that this is necessary because the ‘unpack’ phase copies
the source directory preserving the mtime of files and since those files
are in the store, their mtime is 1:

        ;; Preserve timestamps (set to the Epoch) on the copied tree so that
        ;; things work deterministically.
        (copy-recursively source "."
                          #:keep-mtime? #t)

Thoughts?

Anyhow, we can probably push v2.

Thanks,
Ludo’.