Hello,
tl;dr - What is the correct way to make well-known types available to
protoc when targeting Go?
In the protobuf documentation [1], well-known types are imported with proto
package path "google/protobuf/[...].proto".
In order for protoc to find such files, it is my understanding that they
must be available within a "google/protobuf" subdir of a provided import
path (protoc -I vendor/[...]).
However, github.com/golang/protobuf provides these files only under a
"ptypes/protobuf" directory, which can not be successfully pointed to by
protoc ("ptypes" != "google", import fails with not found).
They are available under google/protobuf within
github.com/protocolbuffers/protobuf/src and
github.com/googleapis/googleapis, among other places, but these are full of
other extraneous files.
I could also play games with protoc arguments like
`Mgoogle/protobuf/timestamp.proto=github.com/golang/protobuf/ptypes/protobuf/timestamp`
to remap every path from google to ptypes, but this most definitely seems
wrong...
Any hints appreciated.
Thanks,
Jean-Philippe
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