Adds a buildGo.external function that can build packages following the
default go-tool package layout. Dependencies work the same way as they
do for other buildGo-packages, but instead of being passed straight to
the compiler a fake GOPATH is assembled using a symlink forest.
External currently supports very few direct configuration options and
was primarily created to build the protobuf packages, but it is also
useful for including external dependencies in buildGo-native projects.
The previous complex build logic for the protobuf package has been
replaced with a call to `external`.
Adds a 'buildGo.proto' function which takes a single .proto file as
its source and generates a corresponding Go library which can then be
imported.
'proto' takes these arguments (Yants-style type definition):
struct "protoArgs" {
# required:
name = string;
proto = path;
# optional:
extraDeps = list goLib; # defaults to [ ]
protocFlags = option string;
}
Note that proto libraries will automatically have dependencies for the
required protobuf Go libraries added to them.
gRPC is not (yet) supported.
