An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.

hackage.haskell.org "diagnostics" keyword

pretty-loc 0.1.0.1
2 versions - Latest release: over 6 years ago - 1.13 thousand downloads total - 1 maintainer
chapelure 0.0.1.0
Chapelure is a diagnostics library for Haskell.
1 version - Latest release: almost 4 years ago - 152 downloads total - 46 stars on GitHub - 1 maintainer
Top 2.9% on hackage.haskell.org
trifecta 2.1.4
A modern parser combinator library with slicing and Clang-style colored diagnostics For example:
93 versions - Latest release: about 2 years ago - 13 dependent packages - 220 dependent repositories - 123 thousand downloads total - 297 stars on GitHub - 4 maintainers