Feature request: easy constructor wrapper for named/grouped values

[oakad]

fx.Annotated makes it easy to produce named and grouped values. But on the consumer side things are less pretty.

Let's say we have a constructor with many parameters and we want to make some of them named/grouped. Right now, the only option to address this is by creating a wrapper function taking an fx.In derived parameter resulting in a rather long winded and untidy boilerplate code with some one off struct types on top.

It may be possible to come with a constructor wrapper accepting a hint of some sort in addition to the constructor; possibly as simple as a specially coded string:

fx.New(
  fx.Provide(
    fx.WithNames(", , funnyName,", myCons),
  ),
)

The implied meaning being that third argument of myCons must come from a provider annotated with name "funnyName"

.

[abhinav]

Hey there! This was added in #757. You should be able to do:

fx.Provide(
  fx.Annotate(myCons, fx.ParamTags("", "", `name:"funnyName"`)),
)

We haven't released it yet—we're hoping to do that right after we finish work on #795.
Stay tuned!

Closing the ticket pending release of the feature.