ghc-hetmet.git
18 years agoPattern-match warning police
simonpj@microsoft.com [Wed, 6 Sep 2006 22:04:17 +0000 (22:04 +0000)]
Pattern-match warning police

18 years agoImprove error reporting for SigTvs, and add comments
simonpj@microsoft.com [Wed, 6 Sep 2006 22:03:09 +0000 (22:03 +0000)]
Improve error reporting for SigTvs, and add comments

18 years agoCheck that top-level binders are unqualified names
simonpj@microsoft.com [Wed, 6 Sep 2006 22:01:01 +0000 (22:01 +0000)]
Check that top-level binders are unqualified names

Not having this check led to strange error messages.
See test rnfail046.

18 years agoDon't fail on missing happy/alex if we don't need them
Ian Lynagh [Wed, 6 Sep 2006 19:54:15 +0000 (19:54 +0000)]
Don't fail on missing happy/alex if we don't need them

18 years agoMake record selection look cheap
simonpj@microsoft.com [Wed, 6 Sep 2006 11:52:42 +0000 (11:52 +0000)]
Make record selection look cheap

exprIsCheap was already making record selection look cheap, esp for
dictionary selection; e.g.
   (==) dEq

The idea is to allow those record selections to migrate inside a
lambda, because on the whole it's more expensive to share than
repeat them.

But sometimes dictionary selection is nested; e.g.
   (==) ($p1Num dNum)

This turned out to make a (fragile) rewrite rule fire a little
more robustly, but it seems like a good idea in any case.

This patch makes nested record selections also look cheap.

18 years agoDocumentation for lexically-scoped type variables
simonpj@microsoft.com [Wed, 6 Sep 2006 16:41:03 +0000 (16:41 +0000)]
Documentation for lexically-scoped type variables

GHC's design for lexically scoped type variables has changed.
Here, belatedly, is the documentation.

18 years agoFix the Windows "VirtualAlloc MEM_COMMIT failed" bug
Ian Lynagh [Wed, 6 Sep 2006 11:27:50 +0000 (11:27 +0000)]
Fix the Windows "VirtualAlloc MEM_COMMIT failed" bug
We had
    base=01100000 size=1048576 size_delta=0 it->size=2097152
    it->base=00F00000 base-it->base=00200000
in commitBlocks.
Esa Ilari Vuokko identified this inequality test as the cause.

18 years agoNow in the wiki
Simon Marlow [Wed, 6 Sep 2006 10:40:22 +0000 (10:40 +0000)]
Now in the wiki

18 years ago-threaded and -prof do not currently work together
Simon Marlow [Wed, 6 Sep 2006 09:31:58 +0000 (09:31 +0000)]
-threaded and -prof do not currently work together

18 years agoCorrect the Cabal version number and remove features.
Duncan Coutts [Tue, 5 Sep 2006 23:20:47 +0000 (23:20 +0000)]
Correct the Cabal version number and remove features.
We're not going to include cabal-setup and cabal-install in this release.

18 years agoStrip trailing CRs when comparing output for nofib. Fixes #797.
Ian Lynagh [Tue, 5 Sep 2006 18:49:10 +0000 (18:49 +0000)]
Strip trailing CRs when comparing output for nofib. Fixes #797.

18 years agonew RTS flag: -V to modify the resolution of the RTS timer
Ian Lynagh [Tue, 5 Sep 2006 14:15:45 +0000 (14:15 +0000)]
new RTS flag: -V to modify the resolution of the RTS timer
Fixed version of an old patch by Simon Marlow. His description read:
 Also, now an arbitrarily short context switch interval may now be
 specified, as we increase the RTS ticker's resolution to match the
 requested context switch interval.  This also applies to +RTS -i (heap
 profiling) and +RTS -I (the idle GC timer).  +RTS -V is actually only
 required for increasing the resolution of the profile timer.

18 years agoFix dependency analysis (notably bindInstsOfLocalFuns) in TcBinds
simonpj@microsoft.com [Tue, 5 Sep 2006 10:51:43 +0000 (10:51 +0000)]
Fix dependency analysis (notably bindInstsOfLocalFuns) in TcBinds

GHC 6.5 does enhanced dependency analysis for recursive bindings, to
maximise polymorphism based on type signatures.  (See Mark Jones's
THIH paper.)

I didn't do the bindInstsOfLocalFuns part correctly though, and jhc
showed up the bug.  (It only matters when you have a recursive group
of two or more functions with a type signature, not at top level, which
is why it hasn't shown up till now.)

Test is tc207.hs

18 years agoAdd note about overlapping instances
simonpj@microsoft.com [Tue, 5 Sep 2006 09:22:01 +0000 (09:22 +0000)]
Add note about overlapping instances

18 years agoRecord that TH doesn't support pattern types signature
simonpj@microsoft.com [Tue, 5 Sep 2006 09:18:34 +0000 (09:18 +0000)]
Record that TH doesn't support pattern types signature

18 years agoFix typos.
Ian Lynagh [Mon, 4 Sep 2006 19:09:58 +0000 (19:09 +0000)]
Fix typos.

18 years agoRefactoring for derived Read
simonpj@microsoft.com [Mon, 4 Sep 2006 13:22:12 +0000 (13:22 +0000)]
Refactoring for derived Read

There are no functional changes in this commit.  But the code for
derived Read is refactored to make it tidier --- and also to make
it very easy if we want derived Read to parse the prefix form of
infix ocnstructors.

For example,
data T = Int `T1` Int
According to the H98 report, the derived Read instance will parse
infix uses of T1, but not prefix uses (T1 4 3).  It's arguable that it
should parse both -- and easy to implement, but it would cause a little bit
of code bloat.

Similarly records.

Anyway this commit doesn't implement the change; just makes it easy
to do so.

18 years agoEnable bang-patterns only when the flag says so (had missed a case before)
simonpj@microsoft.com [Mon, 4 Sep 2006 13:14:12 +0000 (13:14 +0000)]
Enable bang-patterns only when the flag says so (had missed a case before)

18 years agoImprove pretty-printing for HsExpr
simonpj@microsoft.com [Mon, 4 Sep 2006 13:13:34 +0000 (13:13 +0000)]
Improve pretty-printing for HsExpr

18 years agoRemove linear implicit parameters, and document in release notes
simonpj@microsoft.com [Mon, 4 Sep 2006 12:51:05 +0000 (12:51 +0000)]
Remove linear implicit parameters, and document in release notes

18 years agoRelease notes should mention better newtype-deriving
simonpj@microsoft.com [Mon, 4 Sep 2006 12:44:58 +0000 (12:44 +0000)]
Release notes should mention better newtype-deriving

18 years agoDocumentation for bang patterns, and other improvements
simonpj@microsoft.com [Mon, 4 Sep 2006 12:34:38 +0000 (12:34 +0000)]
Documentation for bang patterns, and other improvements

18 years agoAdd a hint on tab completion
Ian Lynagh [Sun, 3 Sep 2006 22:48:23 +0000 (22:48 +0000)]
Add a hint on tab completion

18 years agoAdd :main docs to ghci commands page
Ian Lynagh [Sun, 3 Sep 2006 22:31:07 +0000 (22:31 +0000)]
Add :main docs to ghci commands page

18 years agoAmbiguities are now allowed in ghci command names
Ian Lynagh [Sun, 3 Sep 2006 22:21:15 +0000 (22:21 +0000)]
Ambiguities are now allowed in ghci command names

18 years agoMore output updates
Ian Lynagh [Sun, 3 Sep 2006 22:19:33 +0000 (22:19 +0000)]
More output updates

18 years agoAdd docs for :main
Ian Lynagh [Sun, 3 Sep 2006 22:01:30 +0000 (22:01 +0000)]
Add docs for :main

18 years agoMore doc output fixes
Ian Lynagh [Sun, 3 Sep 2006 21:57:48 +0000 (21:57 +0000)]
More doc output fixes

18 years agoUpdate ghci output in docs
Ian Lynagh [Sun, 3 Sep 2006 21:41:28 +0000 (21:41 +0000)]
Update ghci output in docs

18 years agoFix typo
Ian Lynagh [Sun, 3 Sep 2006 21:26:51 +0000 (21:26 +0000)]
Fix typo

18 years agoUpdate ghci output in docs
Ian Lynagh [Sun, 3 Sep 2006 21:08:05 +0000 (21:08 +0000)]
Update ghci output in docs

18 years agoRemove a tab causing ghci's :? alignment to go wrong
Ian Lynagh [Sun, 3 Sep 2006 21:03:49 +0000 (21:03 +0000)]
Remove a tab causing ghci's :? alignment to go wrong

18 years agoDon't lose linked list tail
Esa Ilari Vuokko [Thu, 31 Aug 2006 22:33:15 +0000 (22:33 +0000)]
Don't lose linked list tail

18 years agoFix Windows MBlock alloctor bookkeeping bug
Esa Ilari Vuokko [Wed, 30 Aug 2006 18:55:40 +0000 (18:55 +0000)]
Fix Windows MBlock alloctor bookkeeping bug

18 years ago-fglasgow-exts no longer implies -fbang-patterns
simonpj@microsoft.com [Fri, 1 Sep 2006 12:57:14 +0000 (12:57 +0000)]
-fglasgow-exts no longer implies -fbang-patterns

18 years agoFix error in release notes, spotted by Esa Ilari Vuokko
Ian Lynagh [Fri, 1 Sep 2006 12:58:41 +0000 (12:58 +0000)]
Fix error in release notes, spotted by Esa Ilari Vuokko

18 years agoRemove changes in packages we don't build
Ian Lynagh [Fri, 1 Sep 2006 12:54:36 +0000 (12:54 +0000)]
Remove changes in packages we don't build

18 years agoDon't enable SMP if we are unregisterised
Ian Lynagh [Tue, 29 Aug 2006 12:32:28 +0000 (12:32 +0000)]
Don't enable SMP if we are unregisterised

18 years agoAdd a pointer to the fundeps paper
simonpj@microsoft.com [Thu, 31 Aug 2006 13:55:11 +0000 (13:55 +0000)]
Add a pointer to the fundeps paper

18 years agofree the task *after* calling closeCond and closeMutex
Simon Marlow [Thu, 31 Aug 2006 10:36:48 +0000 (10:36 +0000)]
free the task *after* calling closeCond and closeMutex

18 years agoadd missing ghc_ge_605
Simon Marlow [Thu, 31 Aug 2006 10:18:13 +0000 (10:18 +0000)]
add missing ghc_ge_605

18 years agodon't closeMutex() the Capability lock
Simon Marlow [Thu, 31 Aug 2006 08:57:28 +0000 (08:57 +0000)]
don't closeMutex() the Capability lock
There might be threads in foreign calls that will attempt to return
via resumeThread() and grab this lock, so we can't safely destroy it.

Fixes one cause of

   internal error: ASSERTION FAILED: file Capability.c, line 90

although I haven't repeated that assertion failure in the wild, only
with a specially crafted test case, so I can't be sure I really got
it.

18 years agofix Unix build
Simon Marlow [Wed, 30 Aug 2006 14:15:29 +0000 (14:15 +0000)]
fix Unix build

18 years agoadd sysErrorBelch() for reporting system call errors
Simon Marlow [Wed, 30 Aug 2006 14:02:52 +0000 (14:02 +0000)]
add sysErrorBelch() for reporting system call errors

18 years agocall ShutdownIOManager() before closing handles
Simon Marlow [Wed, 30 Aug 2006 12:31:31 +0000 (12:31 +0000)]
call ShutdownIOManager() before closing handles
To avoid IO requests completing only to discover that the
completed_table_sema has been CloseHandle()'d.  This all looks a bit
wrong, though: we shouldn't really be waiting for these requests to
complete, they might take forever.

18 years agoWindows: make some soft failures into fatal errors
Simon Marlow [Wed, 30 Aug 2006 09:18:59 +0000 (09:18 +0000)]
Windows: make some soft failures into fatal errors
Some of the memory allocation calls were being checked for error, but
the RTS was printing a message and continuing.  These error cases
lead to crashes later, so better to just fail immediately.

18 years agoMAYBE_GC: initialise HpAlloc
Simon Marlow [Wed, 30 Aug 2006 09:15:29 +0000 (09:15 +0000)]
MAYBE_GC: initialise HpAlloc
HpAlloc was not being set when returning to the scheduler via MAYBE_GC(),
which at the least was just wrong (the scheduler might allocate a large
block more than once), and at worst could lead to crashes if HpAlloc contains
garbage.

Fixes at least one threaded2 test on Windows.

18 years agoFILL_SLOP: don't fill slop for BLACKHOLE/CAF_BLACKHOLE
Simon Marlow [Wed, 30 Aug 2006 08:33:11 +0000 (08:33 +0000)]
FILL_SLOP: don't fill slop for BLACKHOLE/CAF_BLACKHOLE
This affects -debug only, avoids crash with test conc012.

18 years agooops, got the sense of the error case wrong
Simon Marlow [Tue, 29 Aug 2006 15:17:51 +0000 (15:17 +0000)]
oops, got the sense of the error case wrong

18 years agofix some rerrors in the worker counting
Simon Marlow [Tue, 29 Aug 2006 13:51:50 +0000 (13:51 +0000)]
fix some rerrors in the worker counting

18 years agoadd missing case for BlockedOnDoProc
Simon Marlow [Tue, 29 Aug 2006 11:33:45 +0000 (11:33 +0000)]
add missing case for BlockedOnDoProc

18 years agoomit HGL on Windows
Simon Marlow [Tue, 29 Aug 2006 10:49:21 +0000 (10:49 +0000)]
omit HGL on Windows

18 years agoDon't trust "ln -sf" to do the right thing (it doesn't on Solaris)
Simon Marlow [Tue, 29 Aug 2006 09:37:35 +0000 (09:37 +0000)]
Don't trust "ln -sf" to do the right thing (it doesn't on Solaris)
Patch from: Roman Leshchinskiy

18 years agodon't include HaXml, Japi and monads in a GHC checkout
Simon Marlow [Tue, 29 Aug 2006 08:59:46 +0000 (08:59 +0000)]
don't include HaXml, Japi and monads in a GHC checkout
They aren't built as part of a GHC build anyway, it doesn't make much
sense to include them in checkouts or source tarballs.

18 years agodon't include .depend (attempt to fix Windows stage2 build failure)
Simon Marlow [Tue, 29 Aug 2006 08:38:42 +0000 (08:38 +0000)]
don't include .depend (attempt to fix Windows stage2 build failure)

18 years agoAdd mipsel case to configure.ac
Ian Lynagh [Fri, 25 Aug 2006 19:36:03 +0000 (19:36 +0000)]
Add mipsel case to configure.ac

18 years agoincremented versions of arrows and X11
Ross Paterson [Fri, 25 Aug 2006 16:24:15 +0000 (16:24 +0000)]
incremented versions of arrows and X11

18 years agoomit Control.Sequential.STM
Ross Paterson [Fri, 25 Aug 2006 16:16:45 +0000 (16:16 +0000)]
omit Control.Sequential.STM

It's an internal module used by non-GHC implementations only.

18 years agovarious minor tweaks, and rearrange to put "important" changes near the top
Simon Marlow [Fri, 25 Aug 2006 15:49:55 +0000 (15:49 +0000)]
various minor tweaks, and rearrange to put "important" changes near the top

18 years agomention -fno-mono-pat-binds, since this is a diversion from Haskell 98
Simon Marlow [Fri, 25 Aug 2006 15:26:13 +0000 (15:26 +0000)]
mention -fno-mono-pat-binds, since this is a diversion from Haskell 98

18 years agoDocument SMP support
Simon Marlow [Fri, 25 Aug 2006 15:12:36 +0000 (15:12 +0000)]
Document SMP support

18 years agoLoad the target of a dynamic foreign call into a temporary
Simon Marlow [Fri, 25 Aug 2006 14:09:06 +0000 (14:09 +0000)]
Load the target of a dynamic foreign call into a temporary
Fixes ffi011(opt) on x86_64.  I don't know why this has only just
appeared today, it's apparently been broken for some time.

18 years agoSparc supports SMP too
Simon Marlow [Fri, 25 Aug 2006 13:36:28 +0000 (13:36 +0000)]
Sparc supports SMP too

18 years agoFix rewriting of Control.Exception.Assert; fixes 875
Ian Lynagh [Fri, 25 Aug 2006 01:02:19 +0000 (01:02 +0000)]
Fix rewriting of Control.Exception.Assert; fixes 875

18 years agoAdd the regex reshuffle to the release notes
Ian Lynagh [Fri, 25 Aug 2006 11:05:20 +0000 (11:05 +0000)]
Add the regex reshuffle to the release notes

18 years agoparsec is now a core library
Ian Lynagh [Fri, 25 Aug 2006 10:24:18 +0000 (10:24 +0000)]
parsec is now a core library

18 years agoAdd a default case to pprDynamicLinkerAsmLabel
Roman Leshchinskiy [Fri, 25 Aug 2006 10:18:46 +0000 (10:18 +0000)]
Add a default case to pprDynamicLinkerAsmLabel

This is mainly for the benefit of Solaris. I'll fix this properly later.

18 years agoReserve a register for REG_Base on the Sparc
Roman Leshchinskiy [Fri, 25 Aug 2006 10:18:20 +0000 (10:18 +0000)]
Reserve a register for REG_Base on the Sparc

18 years agoAdd atomic SMP primitives for the Sparc
Roman Leshchinskiy [Fri, 25 Aug 2006 10:17:53 +0000 (10:17 +0000)]
Add atomic SMP primitives for the Sparc

18 years agoMake sure GCC uses the Sparc V9 instruction set
Roman Leshchinskiy [Fri, 25 Aug 2006 10:16:46 +0000 (10:16 +0000)]
Make sure GCC uses the Sparc V9 instruction set

We only support Sparc V9 and better as V8 lacks an atomic CAS instruction
which we need for SMP. This means that we have to pass -mcpu=v9 to GCC when
compiling and assembling. Hardcoding the flag is hackish but seems to be
our best bet at the moment. It can still be overridden by the user as GCC
picks the best -mcpu flag regardless of the ordering.

18 years agoshutdownCapability(): don't bail out after 50 iterations
Simon Marlow [Fri, 25 Aug 2006 10:02:44 +0000 (10:02 +0000)]
shutdownCapability(): don't bail out after 50 iterations
See comments for details.  Fixes assertion failures in stage 3 build
which appeared after recent closeMutex() addidion.  May fix other
shutdown issues.

18 years agoadd dependency on regex-compat
Simon Marlow [Fri, 25 Aug 2006 09:32:26 +0000 (09:32 +0000)]
add dependency on regex-compat

18 years agomove parsec into $(GhcBootLibs); tidy up
Simon Marlow [Fri, 25 Aug 2006 09:10:13 +0000 (09:10 +0000)]
move parsec into $(GhcBootLibs); tidy up

18 years agoMips registerised support
Simon Marlow [Fri, 25 Aug 2006 08:57:12 +0000 (08:57 +0000)]
Mips registerised support
Contributed by: Thiemo Seufer <ths@networkno.de>

18 years agoparsec is required to be a core package, genprimopcode uses it
Simon Marlow [Fri, 25 Aug 2006 08:46:07 +0000 (08:46 +0000)]
parsec is required to be a core package, genprimopcode uses it

18 years agoFree Win32 Handles on shutdown
Simon Marlow [Fri, 25 Aug 2006 08:44:35 +0000 (08:44 +0000)]
Free Win32 Handles on shutdown
patch from #878

18 years agoFix unregisterised builds, and building on non-x86/amd64/powerpc
Ian Lynagh [Fri, 25 Aug 2006 00:39:45 +0000 (00:39 +0000)]
Fix unregisterised builds, and building on non-x86/amd64/powerpc

18 years agoRelease notes for GHC 6.6
Ian Lynagh [Thu, 24 Aug 2006 21:16:46 +0000 (21:16 +0000)]
Release notes for GHC 6.6

18 years agoUpdate for changes to packages
Simon Marlow [Thu, 24 Aug 2006 15:35:00 +0000 (15:35 +0000)]
Update for changes to packages
Not much has changed really: just the removal of the overlap
restriction, and the re-instatement of the requirement that
-package-name must be used when compiling a package now.

18 years agosomehow I lost the unix subdir; recover it
Simon Marlow [Thu, 24 Aug 2006 15:25:29 +0000 (15:25 +0000)]
somehow I lost the unix subdir; recover it

18 years agoexpand the section on getting the source.
Simon Marlow [Thu, 24 Aug 2006 15:06:47 +0000 (15:06 +0000)]
expand the section on getting the source.

18 years agoconfig in regex-posix too
Simon Marlow [Thu, 24 Aug 2006 14:57:17 +0000 (14:57 +0000)]
config in regex-posix too

18 years agomake all AC_CONFIG_SUBDIRS optional
Simon Marlow [Thu, 24 Aug 2006 14:30:16 +0000 (14:30 +0000)]
make all AC_CONFIG_SUBDIRS optional

18 years agoAdd dynCompileExpr
Esa Ilari Vuokko [Wed, 23 Aug 2006 22:18:28 +0000 (22:18 +0000)]
Add dynCompileExpr

18 years agoRemove duplicate documentation of -package flag
Ian Lynagh [Thu, 24 Aug 2006 12:18:06 +0000 (12:18 +0000)]
Remove duplicate documentation of -package flag

18 years agoRemove a reference to -fglobalise-toplev-names that got left behind
Ian Lynagh [Thu, 24 Aug 2006 12:14:42 +0000 (12:14 +0000)]
Remove a reference to -fglobalise-toplev-names that got left behind

18 years agoAdd closeMutex and use it on clean up
Esa Ilari Vuokko [Wed, 23 Aug 2006 19:46:04 +0000 (19:46 +0000)]
Add closeMutex and use it on clean up

18 years agoAdd shared Typeable support
Esa Ilari Vuokko [Wed, 23 Aug 2006 00:30:41 +0000 (00:30 +0000)]
Add shared Typeable support

18 years agoIgnore sections generated from .ident
Esa Ilari Vuokko [Wed, 23 Aug 2006 15:50:23 +0000 (15:50 +0000)]
Ignore sections generated from .ident

18 years agoupdate with respect to darcs-all changes
Simon Marlow [Thu, 24 Aug 2006 11:55:35 +0000 (11:55 +0000)]
update with respect to darcs-all changes

18 years agodivide packages into "core" and "extra" packages
Simon Marlow [Thu, 24 Aug 2006 11:49:02 +0000 (11:49 +0000)]
divide packages into "core" and "extra" packages
The following packages are now "core" packages:

  base, Cabal, haskell98, readline, regex-base, regex-compat
  regex-posix, stm, template-haskell, unix, Win32

Core packages are those packages required to bootstrap GHC, or are
closely tied to GHC (stm, template-haskell).  These are the packages
that will be provided in a source distribution from now on.

All other packages are classified as "extra" packages.  As far as
binary distributions and nightly builds go, nothing will change -
we'll still build and include all these packages in the distributions.

NOTE: 'sh darcs-all get' will now get the core packages only.  To get
the extra packages too, use 'sh darcs-all --extra get'.

18 years agoSparc fix: work around gcc optimising away the reserved stack chunk
Simon Marlow [Thu, 24 Aug 2006 11:37:50 +0000 (11:37 +0000)]
Sparc fix: work around gcc optimising away the reserved stack chunk
This bug causes crashse on Sparc when calling foreign functions with
more than 13 arguments.

18 years agoadd new regex packages
Simon Marlow [Thu, 24 Aug 2006 09:44:43 +0000 (09:44 +0000)]
add new regex packages

18 years agoClean up coding style
Esa Ilari Vuokko [Wed, 23 Aug 2006 07:58:22 +0000 (07:58 +0000)]
Clean up coding style

18 years agoUse stgMallc and stgFree instead of malloc/free
Esa Ilari Vuokko [Wed, 23 Aug 2006 00:29:02 +0000 (00:29 +0000)]
Use stgMallc and stgFree instead of malloc/free

18 years agoRemove wrong VirtualAlloc MEM_DECOMMITs on cleanup
Esa Ilari Vuokko [Mon, 21 Aug 2006 18:03:32 +0000 (18:03 +0000)]
Remove wrong VirtualAlloc MEM_DECOMMITs on cleanup

18 years agoRemove few format-warnings by adding casts
Esa Ilari Vuokko [Sun, 13 Aug 2006 11:10:29 +0000 (11:10 +0000)]
Remove few format-warnings by adding casts

18 years agoRemove warning: Correct includes for mingw
Esa Ilari Vuokko [Sun, 13 Aug 2006 00:22:16 +0000 (00:22 +0000)]
Remove warning: Correct includes for mingw

18 years agoAdd few more guesses where to find bits of mingw-gcc
Esa Ilari Vuokko [Sat, 12 Aug 2006 02:09:01 +0000 (02:09 +0000)]
Add few more guesses where to find bits of mingw-gcc

18 years agoin the GHCi prompt, print ModuleNames not Modules
Simon Marlow [Wed, 23 Aug 2006 09:52:58 +0000 (09:52 +0000)]
in the GHCi prompt, print ModuleNames not Modules