func (a *App) Implicit(ctx *app.Context) (*appfile.File, error) { // For Wordpress we implicitly depend on MySQL var result appfile.File if ctx.Tuple.App == "wordpress" { result.Application = &appfile.Application{ Dependencies: []*appfile.Dependency{ &appfile.Dependency{ Source: "github.com/hashicorp/otto/examples/mysql", }, }, } } return &result, nil }