import from Go module

[orangecms]

Hey, I'm trying to use the codegen in Fiano, but I have cloned the repo somewhere in my projects directory, not in ~/go/src:

$ go run ./pkg/intel/metadata/common/manifestcodegen/cmd/manifestcodegen -package bg ./pkg/intel/metadata/bg/bgkey            
2023/01/15 17:54:56 an error: unable to analyze path './pkg/intel/metadata/bg/bgkey': unable to get the package from directory './pkg/intel/metadata/bg/bgkey': unable to open go directory: unable to normalize pkg path '': unable to find directory './pkg/intel/metadata/bg/bgkey' in paths [/usr/lib/go-1.18/src /home/dama/go/src]

So I ended up here:

https://github.com/xaionaro-go/gosrc/blob/master/directory.go#L148-L156

Coming from:
https://github.com/linuxboot/fiano/blob/8a127a636eef8e937572f050fad083972dff737a/pkg/intel/metadata/common/manifestcodegen/pkg/analyze/scan.go#L46

So I tried the following:

adding this

// essentially https://stackoverflow.com/a/67997080
func lookup(name string) (io.ReadCloser, error) {
    f, err := os.Open(name)
    if err != nil {
        return nil, err
    }
    // f implements io.ReadCloser interface as *os.File
    // has Read and Close methods.
    return f, nil
}

and then later, instead of nil, passing the above function to the importer:

  conf = types.Config{Importer: importer.ForCompiler(token.NewFileSet(), "source", lookup)}

However, this errors:

panic: source importer for custom import path lookup not supported (issue #13847).

Indeed, this is not yet supported: https://github.com/golang/go/blob/1c65b69bd1dbc930c6246877f6c21c81f2a60d55/src/go/importer/importer.go#L62

However, said issue is closed: golang/go#13847

Do you have any idea how to solve this? It looks to me like the Go compiler needs a fix. Not sure though.

[xaionaro]

Initially the code of gosrc was written for pre-gomodules environment :(
So basically it works only with GO111MODULE=off. I've provided a bit more details in the initial task.