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+regex-applicative is a Haskell library for parsing using regular
+expressions. Parsers can be built using Applicative interface.
+Perl programmers often use regular expressions for parsing, even if it is not
+an appropriate tool for the job, because Perl has so good support for regexps.
+The opposite seems to be valid about Haskell programmers -- they use parsing
+combinators (which recognize context-free or even context-sensitive grammars),
+even when the language is actually regular!
+Hopefully, this library will improve the situation.
+After uninstalling, run this command to unregister the package from
+the ghc package database: ghc-pkg recache