tree 1033ca39322d8e417839cc12055cdaea1ec6eb4b
parent 64dc6f681062822d3823f74c615e3f6c1f79a30c
author Roland Schilter <roli@schilter.me> 1470381499 +0200
committer Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com> 1470381499 +0200

Reset cache on config name change

I stumbled over this when trying to merge multiple configs.

```
viper.SetConfigName("default")
err := viper.MergeInConfig()
```
which caches file path resolvemenet in `v.configFile`

and then
```
viper.SetConfigName("prod")
err := viper.MergeInConfig()
```

which reuses `v.configFile` without updating it accordingly to the new name.

See https://github.com/spf13/viper/blob/c1ccc378a054ea8d4e38d8c67f6938d4760b53dd/viper.go#L1240