The current instructions for building the Nix manual include a command that doesn't work as described. Specifically:
```
nix build .#nix^doc
```
Running this command results in the error:
```
error: derivation '/nix/store/hddqxzfqgx2fhj8q66ss3idym7pk7aj1-nix-2.26.0pre20250107_383ab87.drv' does not have wanted outputs 'doc'
```
However, this command works if you specify the Nix version explicitly, such as:
```
nix build nix/2.24.11#nix^doc
```
Additionally, these commands are run within the Nix root directory.
However, the nix build .#nix^doc command does work when run from the nixpkgs directory and generates the NixOS manual.
I'm not sure if I'm missing something. Is the `nix^doc` supposed to be added somehow to flake outputs?
The incremental build section does not work since as make has been decommissioned in favor of Meson. Should this be simply deleted?
