deriveKeys cannot deal with type alias

[deosjr]

Consider the following code:

type X struct {}

type Y map[string]*X

func test(y Y) {
    yy := map[string]*X(y)
    for _, k := range deriveSorted(deriveKeys(yy)) {
        fmt.Println(y[k])
    }
}

If we remove the typecast on y and try to use deriveKeys on y directly, removing yy entirely, goderive will fail saying:

could not yet generate: deriveSorted(deriveKeys(y))
Generator Error: keys:deriveKeys, the first argument, github.com/deosjr/test.Y, is not of type map

The first line is still shown when deriving on the typecast yy map, but derive works correctly in that case

[awalterschulze]

Thank you for reporting. This should be fixable using the .Underlying() method, if I recall correctly.