#567: Allow negation of language extension names by adding/removing "No" in
front
----------------------------+-----------------------------------------------
Reporter: SamB | Owner:
Type: enhancement | Status: new
Priority: normal | Milestone:
Component: Cabal library | Version: 1.6.0.1
Severity: normal | Resolution:
Keywords: | Difficulty: unknown
Ghcversion: | Platform:
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Comment (by duncan):
Specifically how about:
{{{
data Extension =
...
{- all the existing extensions -}
...
Negated Extension
}}}
and add a function:
{{{
negateExtension :: Extension -> Extension
negateExtension (Negated e) = e
negateExtension e = Negated e
}}}
and extend the parser and pretty printer. Specifically, all extensions are
to be negated syntactically by adding a 'No' prefix, or if it already
begins with 'No' then removing the prefix.
This is also related to the proposal to remove the 'NoMonoPatBinds'
extension and add an extension 'MonoPatBinds'. It's not immediately clear
if it affects it positively or negatively.
--
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/567#comment:1>
Hackage <http://haskell.org/cabal/>
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