{cabal}:

cabal.mkDerivation (self : {
  pname = "mmap";
  version = "0.5.7";
  sha256 = "0f08x9kmv3a03kz5a6dpxr30nks55cs9sp55qpn2jnw31qx6hg6p";
  meta = {
    description = "Memory mapped files for POSIX and Windows";
  };
})