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remove no-op command in troubleshooting advice

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`nix-store --init` doesn't actually do anything [0] and is not even
documented in the Nix manual

[0]: 9651034dc2/src/nix-store/nix-store.cc (L736-L744)
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Valentin Gagarin 2024-01-05 18:50:50 +01:00
parent 6a7d821003
commit 15dfbcf6c3
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source/guides/troubleshooting.md
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@ -36,13 +36,12 @@ This is a [known issue](https://github.com/NixOS/nix/issues/1251).
It means that using a new version of Nix upgraded the SQLite schema of the [database](https://nix.dev/manual/nix/2.18/glossary#gloss-nix-database), and then you tried to use an older version Nix. It means that using a new version of Nix upgraded the SQLite schema of the [database](https://nix.dev/manual/nix/2.18/glossary#gloss-nix-database), and then you tried to use an older version Nix.
The solution is to dump the database, use the old Nix version to initialize it, and then re-import the data: The solution is to dump the database, and use the old Nix version to re-import the data:
```shell-session ```shell-session
$ /path/to/nix/unstable/bin/nix-store --dump-db > /tmp/db.dump $ /path/to/nix/unstable/bin/nix-store --dump-db > /tmp/db.dump
$ mv /nix/var/nix/db /nix/var/nix/db.toonew $ mv /nix/var/nix/db /nix/var/nix/db.toonew
$ mkdir /nix/var/nix/db $ mkdir /nix/var/nix/db
$ nix-store --init # this is the old nix-store
$ nix-store --load-db < /tmp/db.dump $ nix-store --load-db < /tmp/db.dump
``` ```