Eelco Dolstra wrote:
Bill Trost wrote:
> Yesterday I did an update from the nixpkgs-unstable channel and at some
> point during the upgrade process is automatically upgraded to schema
> version six. I thought that was fine, but now when I try to run nix-env or
> nix-channel, I get the error message
>
> error: current Nix store schema is version 6, but I only support 5
>
> Uh, now what? How do I recover from this situation?
...
To revert to the old Nix store schema, do:
$ echo -n 5 > /nix/var/nix/db/schema
That helped, but the next run of nix-env totally destroyed the profile. I
probably should have run "nix-env --rollback" immediately after
downgrading the schema. Instead, I had to dig a slightly older version of
nix-env out of the store and run "nix-env -u \*" manually to recover
everything.
In any case, it appears to be all better now.
Thanks,
Bill
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