Breaking change for NewProviderGroup in 1.3.0? about config HOT 2 OPEN

Any suggestions on what I'm doing wrong/how to adjust?

from config.

@tormoder Apologies for a long turn-around. This seems to have slipped under the cracks.

It's not entirely clear what you are trying to do since you're doing overrides in the same file. I can only assume that you have some sort of a base configuration object and you introduce new flavors as you go along. If that is the case, you can use YAML itself, rather than relying on the config library.

The Go yaml parser supports anchors as far as I can tell (although I've never used it in any meaningful capacity).

Here is an example.

Config file that has an object with base values and a,b that inherit and override values.

❯ cat config.yaml
base: &base
  foo: bar
  herp: derp
a:
  <<: *base
  foo: baz
b:
  <<: *base
  herp: NOPE

❯ cat main.go
package main

import (
        "fmt"

        "go.uber.org/config"
)

func main() {
        type obj struct {
                Foo  string `yaml:"foo"`
                Herp string `yaml:"herp"`
        }
        var conf struct {
                A obj `yaml:"a"`
                B obj `yaml:"b"`
        }

        provider, err := config.NewYAMLProviderFromFiles("config.yaml")
        if err != nil {
                panic(err)
        }

        if err := provider.Get(config.Root).Populate(&conf); err != nil {
                panic(err)
        }

        fmt.Println("A >>", conf.A)
        fmt.Println("B >>", conf.B)
}

As you can see running it produces the correct A,B structs that contain the override values, and the inheritance from default.

❯ go run main.go
A >> {baz derp}
B >> {bar NOPE}

Perhaps that is what you are looking for?

from config.