RE: improving error messages
| as you may remember, in GHC survey awkward error messages was named as | one of most serious GHC drawbacks. i propose to start collecting | examples of bad error messages together with what we want to see in | these cases. as first contribution, i've added this text as | http://hackage.haskell.org/trac/ghc/ticket/956 Thank you! It'll be very useful to have such a collection. Simon ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
RE: [Hugs-users] Record puns, time for removal?
| There was some discussion on the haskell' list about bring back | record puns, which were once in ghc. | | Record punning would have been very helpful on one of my recent | projects, where I had some large arrays of statically initialized | records. | The longFieldSelectorNamesToAvoidNamespaceClashes are just | noise is such a case. I always thought it was a mistake to remove record puns in H98. I would not be against re-introducing them into GHC, since they appear to remain in Hugs and are in Yhc. Simon ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: OpenGL failing with Mac Intel 6.6 distribution
On Oct 30, 2006, at 8:47 AM, Deborah Goldsmith wrote: Since the files are not in the distribution itself, they can hardly be installed. :-) It looks like the Mac OS X Intel distribution has a problem. I'll check the PPC distribution later to see if it has the same problem. I checked and the Mac OS X PowerPC binary distribution does not have this problem; only Mac OS X Intel. Deborah ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: Bad control characters in GHCi 6.6 (Mac OS X PPC)
On Oct 23, 2006, at 8:59 AM, Björn Buckwalter wrote:
On 10/19/06, Simon Marlow [EMAIL PROTECTED] wrote:
See this page that I just created:
http://hackage.haskell.org/trac/ghc/wiki/Building/MacOSX
I tried these instructions, first by using my existing (darwinports)
readline in /opt/local, and when that failed by first installing
readline in /usr/local per the instructions. Neither fixed the
problem. I don't know why but perhaps I failed to remove the traces of
my initial install completely. In the end I gave up and installed Greg
Heartsfield's binary package which remedied my problems (thanks
Greg!).
I think I have this partially figured out.
When I install version 5.1 of readline, rl_readline_version is
defined as follows in readline/readline.h:
/* */
/* */
/* Well Published Variables*/
/* */
/* */
/* The version of this incarnation of the readline library. */
extern const char *rl_library_version; /* e.g., 4.2 */
extern int rl_readline_version; /* e.g., 0x0402 */
However, in ghc-6.6, libraries/readline/configure has the following:
cat conftest.$ac_ext _ACEOF
/* end confdefs.h. */
/* Override any gcc2 internal prototype to avoid an error. */
#ifdef __cplusplus
extern C
#endif
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char rl_readline_version ();
int
main ()
{
rl_readline_version ();
;
return 0;
}
_ACEOF
which is looking for rl_readline_version as a *function*. This fails
(at the link stage on Darwin/Intel), even though GNU readline is
installed, because the symbol type is wrong. The configure script
concludes that libedit is being used, even though it's using GNU
Readline v5.1.
Was rl_readline_version a function in earlier versions of GNU Readline?
Deborah
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Re: [Hugs-users] Record puns, time for removal?
On Mon, Oct 30, 2006 at 12:11:23PM -, Simon Peyton-Jones wrote:
I always thought it was a mistake to remove record puns in H98. I would
not be against re-introducing them into GHC, since they appear to remain
in Hugs and are in Yhc.
yes. jhc has them too and I wish ghc did.
puns like Foo { .. } would be great too.
I made this page on the wiki to record fixes to the record system:
http://haskell.galois.com/cgi-bin/haskell-prime/trac.cgi/wiki/ExistingRecords
most would be pretty straightforward to implement.
John
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John Meacham - ⑆repetae.net⑆john⑈
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Re: [Hugs-users] Record puns, time for removal?
On Mon, 30 Oct 2006 16:30:42 -0800
John Meacham [EMAIL PROTECTED] wrote:
On Mon, Oct 30, 2006 at 12:11:23PM -, Simon Peyton-Jones wrote:
I always thought it was a mistake to remove record puns in H98. I would
not be against re-introducing them into GHC, since they appear to remain
in Hugs and are in Yhc.
yes. jhc has them too and I wish ghc did.
puns like Foo { .. } would be great too.
I'd vote for enabling them with a command line switch, rather than by default,
as they can be confusing to folks learning the language.
Seth
I made this page on the wiki to record fixes to the record system:
http://haskell.galois.com/cgi-bin/haskell-prime/trac.cgi/wiki/ExistingRecords
most would be pretty straightforward to implement.
John
--
John Meacham - ⑆repetae.net⑆john⑈
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Re: [Hugs-users] Record puns, time for removal?
Hi
puns like Foo { .. } would be great too.
I'd vote for enabling them with a command line switch, rather than by default,
as they can be confusing to folks learning the language.
How discussions come full circle :) I started this discussion on the
Hugs users list because I want to _remove_ the command line switch for
puns from Yhc. I'm not overly fussed whether I remove the entire
feature, or just remove the command line and make it always on by
default, but I do want the command line switch gone!
Interestingly now there seems to be a sudden body of people coming out
the woodwork who want this feature - so perhaps this should be sorted
for Haskell'.
Thanks
Neil
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