There is no possibility of changing the way error styles are applied to inputs

[melantser]

Currently, input is marked as having errors using the following styles

.p-inputtext.ng-dirty.ng-invalid { @include invalid-input(); }

In my opinion, it is not entirely correct. Let's say I want to show errors only when the user performs some action, and not immediately when he changes the input.
I suggest doing the following:

.p-show-error .p-inputtext.ng-invalid { @include invalid-input(); }

In that case, I can decide when to apply the error state to inputs simply by adding .p-show-error to the parent.
Now I have to modify the theme base to achieve this result, so theme updates take a lot of time.