bug#35283: ISO images are not reproducible

[Thomas Schmitt]

Hi,

Ludovic Courtès wrote:
> AFAICS, setting SOURCE_DATE_EPOCH didn’t have a noticeable impact on
> Xorriso, or at least it was overridden by the “-volume_date” options
> that I pass.

Probably. Among the automatic grub-mkrescue options for xorriso's mkisofs
emulation is

  --modification-date=2019042117165600

The equivalent native command is

  -volume_date uuid 2019042117165600

So you indeed have to override this by an own subsequent command.

(SOURCE_DATE_EPOCH overrides defaults of xorriso. But commands or options
 override the overridden defaults.)


Have a nice day :)

Thomas