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List:       linux-doc
Subject:    RE: [PATCH 00/13] [RFC] Rust support
From:       David Laight <David.Laight () ACULAB ! COM>
Date:       2021-04-30 8:30:08
Message-ID: ac41b3c803364f0cbc6c931449c2a51d () AcuMS ! aculab ! com
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From: Thomas Schoebel-Theuer
> Sent: 30 April 2021 07:40
...
> Industry (where I am working) often requires a "second source" to avoid
> the so-called "vendor lock-in", which is the key point of this part of
> the discussion.

There is also the related problem that you need to be able to come
back in 5 years time and re-build the original image.
You can then make minor changes, rebuild, and have a reasonable
confidence that there are no side effects.

This means that web-based and auto-updated tools cannot be used.
Even a VM image might suddenly fall foul of changes to hypervisors.
So you need to keep (at least) 2 system than contain all the build
tools just in case you need to do a maintenance build of an old release.

But even then we can no longer build drivers for some windows
systems because we can't sign them with the old keys.

	David

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