readme: mention that Nix 2.4 is not supported

Improves experience before people manually find #1561.
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Ivan Tham 2020-10-27 00:08:16 +08:00 committed by Robert Helgesson
parent c8746fb588
commit a98ec6ec15
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@ -61,6 +61,8 @@ Currently the easiest way to install Home Manager is as follows:
control this option using the
[`nix.allowedUsers`][nixosAllowedUsers] system option.
Note that Nix 2.4 (`nixUnstable`) is not yet supported.
2. Add the appropriate Home Manager channel. Typically this is
```console