ghc fails to parse versioned GPL and LGPL license from package configuration

I used this shell script to reproduce the problem:

{{{ #! /bin/sh

DIR=$(mktemp -d); cd ${DIR}; trap "cd /; rm -r ${DIR}" EXIT

echo "[]" > P ghc-pkg -f P register - > /dev/null <<EOF name: dummy-gpl license: GPL EOF ghc-pkg -f P register - > /dev/null <<EOF name: dummy-lgpl license: LGPL-3 EOF ghc -package-conf P -e 'putStrLn "success"' || echo fail }}}

which fails like this:

ghc-stage2: P:1:163: parse error on input `Nothing'
fail

It turns out that ghc-pkg uses Cabal's code to manipulate the package configuration, while ghc comes with its own parser in ParsePkgConf.y - possible reasons include: historic reasons, better error messages, better performance.

See also this recent thread: http://www.haskell.org/pipermail/glasgow-haskell-users/2009-July/017600.html

Trac metadata

Trac field	Value
Version	6.11
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture