* It works, but ccache seems to be broken.
```
=====
Directory '/var/cache/ccache' does not exist
Please create it with:
  sudo mkdir -m0770 '/var/cache/ccache'
  sudo chown root:nixbld '/var/cache/ccache'
=====

```

Of course this directory exists with required permissions.

```bash
❯ sudo ls -lha /var/cache | grep ccache
drwxrwx--- 1 root     nixbld    0 Jan  5 19:44 ccache
```