I don't have an answer on how exactly it the generating should look like but I'm thinking about situations when generics are useful to me.

Interfaces are some kind of generics but they don't cover all the cases. Let's consider the function below

func sortInt(in []int)[]int {
	//...
}

To implement sorting for float32, float64 etc I have to basically copy&paste the code and change types. To make it easier I can use go generate to automate it.

Writing another sub-program in my project which generates these functions shoulds a bit hacky to me and a bit too complicated compared to what I want to achieve.

What I want to suggest to create a simpler way to do so. What? I don't have a good answer to this question yet. One of my ideas is providing a new package that accepts a template and path to a file and does the generation for me.

go generate -from-file file.tmpl -target somefile.go

The file.tmpl file would be the Go template. Parameters would be bounded from the command line arguments.

go generate -from-file file.tmpl -target somefile.go -arg argName=value1,value2,value3