[ptxdist] Purpose of ptxd_install_fixup_timestamps

[ptxdist] Purpose of ptxd_install_fixup_timestamps

[Albert Antony]

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Hi all,

Could someone please explain what the purpose of the
ptxd_install_fixup_timestamps function is? It is called in the
targetinstall stage just before xpkg generation, seemingly in order to
change the timestamps on all soon-to-be-packaged files to the date
indicated by the PTXdist version. Why would one want to do that? Or am I
missing something here?

Thanks,
Albert.

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Re: [ptxdist] Purpose of ptxd_install_fixup_timestamps

[Michael Olbrich]

Hi,

On Mon, Jan 18, 2016 at 02:59:56PM +0100, Albert Antony wrote:
> Could someone please explain what the purpose of the
> ptxd_install_fixup_timestamps function is? It is called in the
> targetinstall stage just before xpkg generation, seemingly in order to
> change the timestamps on all soon-to-be-packaged files to the date
> indicated by the PTXdist version. Why would one want to do that? Or am I
> missing something here?

This is to minimize the differences between two builds. We're still a long
way from 100% reproducible builds, but it's one step in that directions.

It also reduces unnecessary changes when doing things like binary diff
updates with filesystems like squashfs.

Michael

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