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Document manual migration for use-xdg-base-directories (#8044)

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* Document manual migration for use-xdg-base-directories

As there's currently no automatic migration for use-xdg-base-directories
option, add instructions for manual migration to the option's
description.

Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
This commit is contained in:
Alexander Bantyev 2023-06-02 15:38:17 +00:00 committed by GitHub
parent 527eb4a99a
commit a15b2c01c0
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src/libstore/globals.hh
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@ -995,6 +995,18 @@ public:
| `~/.nix-profile` | `$XDG_STATE_HOME/nix/profile` | | `~/.nix-profile` | `$XDG_STATE_HOME/nix/profile` |
| `~/.nix-defexpr` | `$XDG_STATE_HOME/nix/defexpr` | | `~/.nix-defexpr` | `$XDG_STATE_HOME/nix/defexpr` |
| `~/.nix-channels` | `$XDG_STATE_HOME/nix/channels` | | `~/.nix-channels` | `$XDG_STATE_HOME/nix/channels` |
If you already have Nix installed and are using [profiles](@docroot@/package-management/profiles.md) or [channels](@docroot@/package-management/channels.md), you should migrate manually when you enable this option.
If `$XDG_STATE_HOME` is not set, use `$HOME/.local/state/nix` instead of `$XDG_STATE_HOME/nix`.
This can be achieved with the following shell commands:
```sh
nix_state_home=${XDG_STATE_HOME-$HOME/.local/state}/nix
mkdir -p $nix_state_home
mv $HOME/.nix-profile $nix_state_home/profile
mv $HOME/.nix-defexpr $nix_state_home/defexpr
mv $HOME/.nix-channels $nix_state_home/channels
```
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}; };
}; };