hsregex provides:

RRegex         - PCRE if available, else Posix, (compatible with Text.Regex)
RRegex.PCRE    - Perl compatible regular expressions 
RRegex.Posix   - POSIX regular extensions (compatible with Text.Regex.Posix)
RRegex.TH      - template Haskell compile-time checked regular expressions
RRegex.Syntax  - Perl like overloaded matching syntax


Main.hs - simple grep-like demonstration program


be sure to define HAVE_REGEX_H and HAVE_PCRE_H as appropriate and pass them to hsc2hs