ghc-optparse-applicative

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

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