Build with go1.25, `governer` cannot recognize type aliases in `// goverter:extend`

[wufeng5702]

Describe the bug
some convert function for grpc:

import (
	"time"

	"google.golang.org/protobuf/types/known/timestamppb"
)

// goverter:converter
// goverter:extend TimeToTimestamppb
type ConverterTimeToTimestamppb interface {
	ConverterTimeToTimestamppb(source Input) Output
}

type Input struct {
	Time time.Time
}

type Output struct {
	Time *timestamp.Timestamp
}

// not work
// goverter build with go1.25 cannot recognize `type timestamp.Timestamp = timestamppb.Timestamp`
func TimeToTimestamppb(time time.Time) *timestamppb.Timestamp {
	return timestamppb.New(time)
}

To Reproduce

exec command (it work on goverter with go1.23), I got this:

$ goverter gen -g 'ignoreUnexported yes'  ./convert
Error while creating converter method:
    ./convert/convert.go:19
    func (convert.ConverterTimeToTimestamppb).ConverterTimeToTimestamppb(source convert.Input) convert.Output
        [source] convert.Input
        [target] convert.Output

| convert.Input
|
|      | time.Time
|      |
source.Time .???
target.Time*.Seconds
|      |   | |
|      |   | | int64
|      |   |
|      |   | google.golang.org/protobuf/types/known/timestamppb.Timestamp
|      |
|      | *github.com/golang/protobuf/ptypes/timestamp.Timestamp
|
| convert.Output

Cannot match the target field with the source entry: "Seconds" does not exist.

Expected behavior
recognize type alias.

By the way, I found a solution, change the output type of the function from *timestamppb.Timestamp to *timestamp.Timestamp,

func TimeToTimestamp(time time.Time) *timestamp.Timestamp {
	return timestamppb.New(time)
}

[jmattheis]

It's somewhat unrelated to go1.25. It's related to the x/tools updated shipped in v1.9.1

$ cat input.go
package example

// goverter:converter
// goverter:extend Conv
type Converter interface {
        Convert(source Input) Output
}

type InputAlias = Input
type OutputAlias = Output

type ID = string

func Conv(i int) *string {
        return nil
}

type Input struct{ Name int }
type Output struct{ Name *ID }

$ GOTOOLCHAIN=go1.24.0 go run github.com/jmattheis/goverter/cmd/goverter@v1.9.0 gen ./
# no output here, generation succeeded.

$ GOTOOLCHAIN=go1.24.0 go run github.com/jmattheis/goverter/cmd/goverter@v1.9.1 gen ./
Error while creating converter method:
    /home/jm/src/goverterissue/input.go:6
    func (goverter/example.Converter).Convert(source goverter/example.Input) goverter/example.Output
        [source] goverter/example.Input
        [target] goverter/example.Output

| goverter/example.Input
|
|      | int
|      |
|      |   | int
|      |   |
source.Name*
target.Name*
|      |   |
|      |   | string
|      |
|      | *goverter/example.ID
|
| goverter/example.Output

TypeMismatch: Cannot convert int to string

You can define a custom conversion method with extend:
https://goverter.jmattheis.de/reference/extend
exit status 1

But yeah, should be fixed.

[jmattheis]

Could you try out the fix in the branch nested-aliases?

$ go run github.com/jmattheis/goverter/cmd/goverter@nested-aliases gen ./

[wufeng5702]

Could you try out the fix in the branch nested-aliases?

$ go run github.com/jmattheis/goverter/cmd/goverter@nested-aliases gen ./

Thank you for the quick fix, it work.

[jmattheis]

Released with v1.9.2.