[MacPorts] #54363: hs-bytestring-show: fails on 10.7

[MacPorts]

#54363: hs-bytestring-show: fails on 10.7
---------------------------------+-------------------
  Reporter:  mojca               |      Owner:  kencu
      Type:  defect              |     Status:  new
  Priority:  Normal              |  Milestone:
 Component:  ports               |    Version:
Resolution:                      |   Keywords:  lion
      Port:  hs-bytestring-show  |
---------------------------------+-------------------

Comment (by kencu):

 `ghc needs a runtime dependency for it's build compiler` describes the
 situation.

  It's not actually ghc, but the ghc port scripts that needs this, but same
 thing in the end. At least the error quite reasonably announces the
 compiler it is looking for.

 The inelegant but easy workaround for systems that have this problem is to
 install the missing compiler manually, once you see which one it is
 looking for. Or force a rebuild of ghc from source, which fixes it (until
 the user someday uninstalls that compiler, like I did).

 The elegant solution would be to rewrite/overwrite/edit the `clang-
 wrapper` script with some suitable compiler the machine has installed
 already, if there is one, and if there is not, to request or require the
 installation of one. No idea how that might accomplished, though.

 Clemens is likely more interested in working on ghc version 8 than going
 back to spend time on this, I imagine.

--
Ticket URL: <https://trac.macports.org/ticket/54363#comment:9>
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