#1212: Add IPv6 support to network library
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Reporter: [EMAIL PROTECTED] | Owner:
Type: proposal | Status: new
Priority: normal | Milestone: Not GHC
Component: libraries/network | Version: 6.6
Severity: normal | Resolution:
Keywords: | Difficulty: Moderate (1 day)
Testcase: | Architecture: Multiple
Os: Multiple |
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Comment (by panne):
I haven't looked into the patch in detail, but I have one general remark:
It is very bad if the set of exported entities of a Haskell module is
platform-dependent. This leads to the need of an "autoconf at the Haskell
level", which is not very desirable. Your suggested patch is not the only
culprit in the standard libraries, but let at least not make things worse.
A better strategy is to supply default values and/or fallback
implementations for things not directly supported on the platform in
question, even if the implementation is more limited or even 'ioError
(userError "not supported")'. This way, platform differences can be
handled at runtime, often during normal error handling.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1212>
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