@cardano optparse-applicative-fork0.18.1.0

optparse-applicative-fork is a haskell library for parsing options on the command line, and providing a powerful applicative interface for composing them.

optparse-applicative-fork takes care of reading and validating the arguments passed to the command line, handling and reporting errors, generating a usage line, a comprehensive help screen, and enabling context-sensitive bash, zsh, and fish completions.

See the included README for detailed instructions and examples, which is also available on github https://github.com/pcapriotti/optparse-applicative-fork.