Platform sources for Go

Is there a way to have go_binary and go_library to include only the source files compatible with current platform (OS/arch)? The native go build <package> command does that automatically, but I don’t know how to configure buck to have the same behavior.

For example, the following command shows the list of files included in go build when I am building the package:

go list -f '{{.GoFiles}}' github.com/jessevdk/go-flags

[nemith]

That functionality doesn’t exist yet. At facebook we wrote a small go utility that creates BUCK files with the correct files based off of build.Package (https://golang.org/pkg/go/build/#Context.Import)

Less than ideal but it works. Buck doesn’t inspect the contents of files so it cannot work the same as go build.

[linzhp]

The native Go compiler does filter files. If you run go build github.com/jessevdk/go-flags, only source files in the package compatible with the current platform are included. I am trying to figure out how Buck turns that filtering off and how I can turn it on again. Any hint?