bash-3.2$ port installed 'hs-*'
The following ports are currently installed:
  hs-base64-bytestring @1.0.0.1_2 (active)
  hs-bibutils @5.0_0 (active)
  hs-binary @0.7.1.0_1 (active)
  hs-blaze-builder @0.3.1.1_0 (active)
  hs-blaze-html @0.6.1.1_2 (active)
  hs-blaze-markup @0.5.1.5_3 (active)
  hs-citeproc @0.3.8_4 (active)
  hs-data-default @0.5.3_0 (active)
  hs-data-default-class @0.0.1_0 (active)
  hs-data-default-instances-base @0.0.1_0 (active)
  hs-data-default-instances-containers @0.0.1_0 (active)
  hs-data-default-instances-dlist @0.0.1_0 (active)
  hs-data-default-instances-old-locale @0.0.1_0 (active)
  hs-digest @0.0.1.2_2 (active)
  hs-dlist @0.5_2 (active)
  hs-extensible-exceptions @0.1.1.4_0 (active)
  hs-highlighting-kate @0.5.5_0 (active)
  hs-http @4000.2.8_3 (active)
  hs-json @0.7_2 (active)
  hs-mtl @2.1.2_2 (active)
  hs-network @2.4.1.2_1 (active)
  hs-pandoc-types @1.10_3 (active)
  hs-parsec @3.1.3_3 (active)
  hs-pcre-light @0.4_2 (active)
  hs-random @1.0.1.1_2 (active)
  hs-sha @1.6.1_3 (active)
  hs-syb @0.4.0_2 (active)
  hs-tagsoup @0.13_0 (active)
  hs-temporary @1.1.2.4_2 (active)
  hs-texmath @0.6.1.5_0 (active)
  hs-text @0.11.3.1_0 (active)
  hs-transformers @0.3.0.0_2 (active)
  hs-utf8-string @0.3.7_2 (active)
  hs-xml @1.3.13_0 (active)
  hs-zip-archive @0.1.3.4_3 (active)
  hs-zlib @0.5.4.1_1 (active)