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 - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
