extopenscad: Compatibility with optparse-applicative-0.5 #93

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This actually bumps the lower bound for optparse-applicative, which allows us to rely on its export of (<>).

extopenscad.hs:57:54: Not in scope: `<>'

extopenscad.hs:67:17: Not in scope: `<>'


I'm not sure what is going on with later versions. I suspect that this is it, though:

  • Early Data.Monoid dosn't export (<>)
  • Other libraries that import and re-export it thus do/don't in earlier/later versions.

I think my solution (hiding (<>) and reimplementing it) is probably the most widely compatible approach.

@colah colah closed this Jan 5, 2013
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