On 2018-01-24 at 11:51, Michael Fothergill wrote: > I fired up Debian stretch here and ran the following: > > > r > oot@mikef-PC:/etc/apt# apt-get update > Ign:1 http://ftp.uk.debian.org/debian stretch InRelease > Hit:2 http://ftp.uk.debian.org/debian stretch Release > Hit:3 http://security.debian.org stretch/updates InRelease > Reading package lists... Done > root@mikef-PC:/etc/apt# apt-get -t experimental install > linux-headers-4.15.0-rc8-all-amd64 > Reading package lists... Done > > and got the following error: > > > E: The value 'experimental' is invalid for APT::Default-Release as such a > release is not available in the sources > > Mysources file looks like this: > > > root@mikef-PC:/etc/apt# more sources.list > # > > > > ###### Debian Main Repos > deb http://ftp.uk.debian.org/debian/ stretch main experimental contrib > non-free
stretch is a suite; more specifically, it is a codename for something that used to be AKA "stable". main, contrib, and non-free are components within stretch. experimental is not part of stable, testing, or unstable. It is its own suite. It goes in place of 'stretch' in the line, not into the list of components after the suite. As the (badly line-wrapped) script from a few posts ago would indicate, you need a line reading something like deb http://ftp.uk.debian.org/debian/ experimental main contrib non-free -- The Wanderer The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man. -- George Bernard Shaw
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