#2116: ghci should try to read erroneous modules partially
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Reporter: j.waldmann | Owner:
Type: feature request | Status: reopened
Priority: normal | Milestone: 6.10 branch
Component: Compiler | Version: 6.8.2
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: Unknown
Os: Unknown |
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Changes (by claus):
* cc: claus (added)
Comment:
i don't know whether type errors can be caught locally, without ghci
losing its place during load, but if yes, one could try to replace each
erroneous definition with calls to error:
{{{
f x = x+True
}}}
might become
{{{
f x = error "No instance for (Num Bool)
arising from a use of `+' at <interactive>:1:10-15
Possible fix: add an instance declaration for (Num Bool)
In the expression: x + True
In the definition of `f': f x = x + True"
}}}
while trying to continue loading the rest of the module (which should be
marked as partially loaded).
does that sound plausible?
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2116#comment:4>
GHC <http://www.haskell.org/ghc/>
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