Quoting Dan Ritter (2019-10-23 20:52:07) > An Liu wrote: > > > > > > > > > > > > Reason this option is not enabled by default is, as I understand it, > > > that a) downgrades are officially unsupported (in reality they commonly > > > work, > > > > > > Glad to hear this. Now i had a answer to this question: does debian > > package management system have > > a downgrade mechanism similar to 'yum'. > > > > we hardly need it, but if it is the time you need it, it could save you > > from chaos. :) > > Figure out the package versions you want, and tell apt to > install them directly; to install foobar version 3.2.1-1+deb9u1: > > apt install foobar=3.2.1-1+deb9u1 > > You can specify multiple packages this way, and remove packages > by appending a - to the end of their name instead of a version.
Or if you have temporarily added testing suite to an otherwise unstable system - e.g. to escape a mess like the one initiating this thread: apt install foobar/testing ...but in this current case you would need to juggle some 20-30 library conflicts at once, so you would be tremendously helped by the fullscreen mode of aptitude where you can interactively compose a complex _set_ of changes and then apply all changes in one go (literally executing the set by pressing "g" as in go). Now, to repeat myself, because this is important: It is *NOT* supported to mix multiple suites, and it is *NOT* supported to downgrade packages. Do whatever you like on your systems - blow thenm up or pollute them with deb-multimedia crap if that's your fancy - just please pretty please _mention_ that you run a Frankendeb system when reporting bugs experienced on such systems. - Jonas -- * Jonas Smedegaard - idealist & Internet-arkitekt * Tlf.: +45 40843136 Website: http://dr.jones.dk/ [x] quote me freely [ ] ask before reusing [ ] keep private
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