This package provides Cabal support for the proto-lens package.
It automatically generates Haskell source files from protocol buffer
files (.proto).
To generate Haskell modules for a Cabal package, import
Data.ProtoLens.Setup from the Setup.hs file. For example:
import Data.ProtoLens.Setup
-- Here, "src" is the directory where .proto source files may be found
main = defaultMainGeneratingProtos "src"
Then, edit the .cabal file of your project to:
Specify build-type: Custom, and add a custom-setup clause that
depends on proto-lens-setup.
List the .proto files in extra-source-files. Note that the field belongs
at the top level of the .cabal file, rather than once per
library/executable/etc.
List the generated modules (e.g. Proto.Foo.Bar) in exposed-modules
or other-modules of the rule(s) that use them (e.g. the library or
executables). Additionally, add proto-lens-runtime to the build-depends
of those rules.
For example, in foo-bar-proto.cabal:
build-type: Custom
extra-source-files: src/foo/bar.proto
...
custom-setup
setup-depends: base, Cabal, proto-lens-setup
library
exposed-modules: Proto.Foo.Bar, Proto.Foo.Bar_Fields
autogen-modules: Proto.Foo.Bar, Proto.Foo.Bar_Fields
build-depends: proto-lens-runtime, ...
