proto-lens-setup: Cabal support for codegen with proto-lens.

[ bsd3, library, unclassified ] [ Propose Tags ]

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
  setup-depends: base, Cabal, proto-lens-setup
    exposed-modules: Proto.Foo.Bar, Proto.Foo.Bar_Fields
    autogen-modules: Proto.Foo.Bar, Proto.Foo.Bar_Fields
    build-depends: proto-lens-runtime, ...


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Dependencies base (>=4.10 && <4.19), bytestring (>=0.10 && <0.12), Cabal (>=2.0 && <3.12), containers (>=0.5 && <0.7), deepseq (>=1.4 && <1.5), directory (>=1.2 && <1.4), filepath (>=1.4 && <1.6), process (>=1.2 && <1.7), proto-lens-protoc (>=0.4 && <0.9), temporary (>=1.2 && <1.4), text (>=1.2 && <2.2) [details]
License BSD-3-Clause
Copyright Google Inc.
Author Judah Jacobson
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Source repo head: git clone
Uploaded by gnezdo at 2023-12-23T22:13:20Z
Reverse Dependencies 1 direct, 0 indirect [details]
Downloads 3837 total (73 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2023-12-24 [all 1 reports]