How to enable Ligatures in Emacs 28?

Emacs 28 built with `HARFBUZZ` supports ligatures via `composite` (`(featurep 'composite)` to check)

Using DOOM Emacs , ligatures do not work with Inconsolata (and Ligconsolata) while they work for other fonts (without their specific config flags).

https://github.com/hlissner/doom-emacs/blob/f6f90c9791fa4a5e433bc42af52823bccfe1a362/modules/ui/ligatures/config.el#L174

Since the ligatures are exposed differently, I tried this, but to no avail:

`(font-spec :family "Ligconsolata" :size 17 :otf '(latn nil nil (liga)))`
`(font-spec :family "Inconsolata" :size 17 :otf '(latn nil nil (dlig)))`

```
:otf

VALUE must be a list (SCRIPT-TAG LANGSYS-TAG GSUB [ GPOS ]) to specify
required OpenType features.

SCRIPT-TAG: OpenType script tag symbol (e.g. deva).
LANGSYS-TAG: OpenType language system tag symbol,
or nil for the default language system.
GSUB: List of OpenType GSUB feature tag symbols, or nil if none required.
GPOS: List of OpenType GPOS feature tag symbols, or nil if none required.

GSUB and GPOS may contain nil elements. In such a case, the font
must not have any of the remaining elements.

For instance, if the VALUE is (thai nil nil (mark)), the font must
be an OpenType font whose GPOS table of thai script's default
language system must contain mark feature.
```

Modifying a `Customize` entry:

```
(custom-set-faces
'(default ((t (:family "Inconsolata"
:otf '(latn nil nil (dlig))
)))))
```

Does not work either.

I'd preferably sort this out in vanilla Emacs first, but I've had no luck there either.

Any help is appreciated!