proto-lens

A lens-based implementation of protocol buffers in Haskell.

https://github.com/google/proto-lens

Version on this page:	0.2.1.0
LTS Haskell 24.28:	0.7.1.6
Stackage Nightly 2025-07-14:	0.7.1.6
Latest on Hackage:	0.7.1.6

See all snapshots proto-lens appears in

BSD-3-Clause licensed by Judah Jacobson

Maintained by [email protected]

This version can be pinned in stack with:proto-lens-0.2.1.0@sha256:29f4e90620cce1042e6f571d23974319c59534751060a5f84c8a43700e3fdd26,1646

Module documentation for 0.2.1.0

Data
- Data.ProtoLens

Depends on 11 packages(full list with versions):

attoparsec, base, bytestring, containers, data-default-class, lens-family, parsec, pretty, text, transformers, void

Used by 5 packages in lts-8.19(full list with versions):

proto-lens-arbitrary, proto-lens-combinators, proto-lens-descriptors, proto-lens-optparse, proto-lens-protoc

The proto-lens library provides to protocol buffers using modern Haskell language and library patterns. Specifically, it provides:

Composable field accessors via lenses
Simple field name resolution/overloading via type-level literals
Type-safe reflection and encoding/decoding of messages via GADTs