Use 

    import errors "golang.org/x/xerrors"

this way later you only have to replace it with `import "errors"` and 
`errors.Errorf` with `fmt.Errorf`.


2019. szeptember 6., péntek 16:50:10 UTC+2 időpontban changkun a következőt 
írta:
>
> I have upgraded my code to Go 1.13 with newly introduced errors APIs.
>
> However, I am not able to upgrade the production environment Go version 
> which is Go 1.11, which means I have to run Go 1.13 code on a Go 1.11 
> environment.
>
> What are the way to make my builds both happy on local and production 
> environment with a single code base?
>

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