Re: [bitbake-devel] [RFC PATCH] fetch: `touch` mirror tarball stamp files on download

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Wed, 2026-09-02 at 10:32 +0200, Philip Lorenz via lists.openembedded.org wrote:
> The mirror tarball stamp file's mtime is currently only updated on
> creation / initial download. This makes it difficult to detect whether a
> mirror tarball is still relevant in a given build.
> 
> Improve this by also `touch`ing the mirror tarball stamp files alongside
> the sources primary stamp file.

This gets a bit tricky as we don't touch every download file at every
download, we only touch the end stamp file.

This would mean we touch mirror files and stamp files but not main
download files and I think brings things into more disparity?

I'm reluctant on more complexity in this area, we already have a lot of
problems with the mirror tarballs and code structure.

I can also think of cases where updating the timestamp may cause things
to re-download the tarballs too since you can't know the content in
advance with many of them. This is perhaps the stronger reason not to
do this.

I was also going to say there shouldn't be hardcoded DL_DIR references
in there but I notice the fetcher has a few too many of them already.
That would be a separate bug/issue :(.

Cheers,

Richard