[ghci] unknown symbol in base-unicode-symbols-0.2.1.2 ...
Hi everyone ! I'm having a problem in GHCi when loading modules relying on the base-unicode-symbols package. My prompt gives me the following message:
ghci $ GHCi, version 7.0.2: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> :m +System.USB Prelude System.USB> newCtx Loading package array-0.3.0.2 ... linking ... done. Loading package containers-0.4.0.0 ... linking ... done. Loading package deepseq-1.1.0.2 ... linking ... done. Loading package bytestring-0.9.1.10 ... linking ... done. Loading package text-0.11.0.5 ... linking ... done. Loading package base-unicode-symbols-0.2.1.2 ... linking ... <interactive>: /home/john/.cabal/lib/base-unicode-symbols-0.2.1.2/ghc-7.0.2/HSbase-unicode-symbols-0.2.1.2.o: unknown symbol `__stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziCategoryziUnicode_' ghc: unable to load package `base-unicode-symbols-0.2.1.2' Prelude System.USB>
I thought this was due to me screwing around cabal/ghc-pkg caches but after a fresh install of Fedora15-alpha / cabal update / cabal install usb I'm still getting the same error. Moreover, a quick `nm HSbase-unicode-symbols-*.o | grep ControlziCategoryziUnicode` give me the following output.
nm HSbase-unicode-symbols-0.2.1.2.o | grep -C 4 'ControlziCategoryziUnicode_' 0000000000000070 T __stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziApplicativeziUnicode 0000000000000040 T __stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziApplicativeziUnicode_ 0000000000000120 T __stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziArrowziUnicode 00000000000000d8 T __stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziArrowziUnicode_ U __stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziCategoryziUnicode_ 00000000000001b8 T __stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziMonadziUnicode 0000000000000188 T __stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziMonadziUnicode_ 0000000000000250 T __stginit_basezmunicodezmsymbolszm0zi2zi1zi2_DataziBoolziUnicode 0000000000000220 T __stginit_basezmunicodezmsymbolszm0zi2zi1zi2_DataziBoolziUnicode_
Could someone please explain to me what's happening ? regards, /John
On Wed, Mar 30, 2011 at 10:37:47PM +0200, John Obbele wrote:
I'm having a problem in GHCi when loading modules relying on the base-unicode-symbols package. My prompt gives me the following message:
ghci $ Loading package base-unicode-symbols-0.2.1.2 ... linking ... <interactive>: /home/john/.cabal/lib/base-unicode-symbols-0.2.1.2/ghc-7.0.2/HSbase-unicode-symbols-0.2.1.2.o: unknown symbol `__stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziCategoryziUnicode_' ghc: unable to load package `base-unicode-symbols-0.2.1.2'
Oki, so I'm answering to myself: the base-unicode-symbols cabal file introduces a quirk concerning 'base' version which hides the symbols in Control.Category.Unicode.
base-unicode-symbols.cabal -- line 42-46 if !flag(old-base) build-depends: base >= 3.0 && < 4.4 else build-depends: base >= 3.0.3.1 && < 4.4 exposed-modules: Control.Category.Unicode
I should contact the maintainer about this … regards, /john
I can reproduce the problem on my system with GHC-7.0.3.
The flag old-base is meant for base libraries before 3.0.3.1 which
didn't export a Control.Category module. It looks like I accidentally
inverted the logic of the flag. What is weird is that is still builds
okay on my system. I would expect that, given the inverted flag logic,
Control.Category.Unicode would be missing from the installed package's
exposed module list.
I fixed the logic of the flag and the bug appears to be gone. I
uploaded the fixed version 0.2.1.3.
Thanks for the bug report!
On 31 March 2011 00:05, John Obbele
On Wed, Mar 30, 2011 at 10:37:47PM +0200, John Obbele wrote:
I'm having a problem in GHCi when loading modules relying on the base-unicode-symbols package. My prompt gives me the following message:
ghci $ Loading package base-unicode-symbols-0.2.1.2 ... linking ... <interactive>: /home/john/.cabal/lib/base-unicode-symbols-0.2.1.2/ghc-7.0.2/HSbase-unicode-symbols-0.2.1.2.o: unknown symbol `__stginit_basezmunicodezmsymbolszm0zi2zi1zi2_ControlziCategoryziUnicode_' ghc: unable to load package `base-unicode-symbols-0.2.1.2'
Oki, so I'm answering to myself: the base-unicode-symbols cabal file introduces a quirk concerning 'base' version which hides the symbols in Control.Category.Unicode.
base-unicode-symbols.cabal -- line 42-46 if !flag(old-base) build-depends: base >= 3.0 && < 4.4 else build-depends: base >= 3.0.3.1 && < 4.4 exposed-modules: Control.Category.Unicode
I should contact the maintainer about this …
participants (2)
-
John Obbele -
Roel van Dijk