[MacPorts] #25558: ghc: update to latest version

[MacPorts]

#25558: ghc: update to latest version
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 Reporter:  jwiegley@…          |       Owner:  gwright@…           
     Type:  update              |      Status:  assigned            
 Priority:  Normal              |   Milestone:                      
Component:  ports               |     Version:                      
 Keywords:                      |        Port:  ghc ghc-devel       
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Comment(by kitchen.andy@…):

 Thanks Cal,

 Damn, I didn't catch this because I already had ghc-7.4.2 installed in
 /usr/local as well,
 I should rename this temporarily while I'm hacking macports.

 I'm in the process of making my install name fixing code more general,
 I could set it up to fix /usr/local references as well.

 Although most of this might be moot, I've had to drop the
 ghc-boostrap version down to 7.0.4, because 7.4.2 ironically
 doesn't compile itself.

 Also, What's the best way to encode this fact in a portfile?

 Thanks in advance,

 AK

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Ticket URL: <https://trac.macports.org/ticket/25558#comment:24>
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