55 lines
1.7 KiB
Markdown
55 lines
1.7 KiB
Markdown
# Known Issues
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## MacOS 10.15 "Catalina"
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There is an unsolved issue with the root(`/`) file system in `10.15` being read-only:
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https://github.com/NixOS/nix/issues/2925
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Our current recommended workaround is putting `/nix` under `/opt/nix` and symlinking it via `/etc/synthetic.conf`:
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```bash
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sudo mkdir /opt/nix
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sudo chown ${USER} /opt/nix
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sudo sh -c "echo 'nix\t/opt/nix' >> /etc/synthetic.conf"
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reboot
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```
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After the system reboots you should see the `/nix` symlink in place:
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```bash
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% ls -l /nix
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lrwxr-xr-x 1 root wheel 8 Oct 11 13:53 /nix -> /opt/nix
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```
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In order to be able to use Nix with a symlinked `/nix` you need to include this in your shell:
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```bash
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export NIX_IGNORE_SYMLINK_STORE=1
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```
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Add it to your `.bashrc` or any other shell config file.
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__NOTE__: Your old `/nix` directory will end up in `/Users/Shared/Relocated Items/Security/nix` after OS upgrade.
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## Cache Downloads Timing Out
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If copying from Nix Cache times out you can adjust the timeout by changing [`nix/nix.conf`](/nix/nix.conf):
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```conf
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stalled-download-timeout = 9001
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```
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## `extra-sandbox-paths` Is a Restricted Setting
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When building Android on NixOS you might encounter the following error:
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```
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ignoring the user-specified setting 'extra-sandbox-paths', because it is a restricted setting and you are not a trusted user
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```
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You can mitigate this by setting the [`nix.trustedUsers`](https://nixos.org/nixos/options.html#nix.trustedusers) property.
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## NixOS Prioritizes System Config
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Currently on NixOS `NIX_CONF_DIR` is being ignored in favor of the default `/etc/nix/nix.conf`.
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This will be possible to fix once Nix `2.4` comes out with support for `NIX_USER_CONF_FILES`.
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For more details see https://github.com/NixOS/nix/issues/3723.
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