January 2008 - Hugs-Bugs

Less defaulting with -98
by Neil Mitchell 13 Jan '08

13 Jan '08

Hi $ hugs -98 Hugs> [] ERROR - Cannot find "show" function for: *** Expression : [] *** Of type : [a] $hugs +98 Hugs> [] [] It seems that with -98 you don't get the very handy defaulting. Is this a delibarate decision, or is it just a bug? Thanks Neil

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Re: [Hugs] #44: Hugs does not provide version numbers for installed packages
by Hugs 10 Jan '08

10 Jan '08

#44: Hugs does not provide version numbers for installed packages --------------------------+------------------------------------------------- Reporter: briansmith | Owner: nobody Type: enhancement | Status: new Priority: major | Milestone: Component: hugs | Version: 200609 Resolution: | Keywords: --------------------------+------------------------------------------------- Changes (by guest): * cc: duncan(a)haskell.org (added) Comment: Replying to [comment:2 ross]: > On the other hand, !InstalledPackageInfo is somewhat GHC-specific, so perhaps it would be better in both cases to just put in the package description, augmented with any buildinfo generated by package configuration. Is there anything GHC-specific that would cause problems? Some fields can simply be ignored for hugs. It'd be nice if we could get ghc, nhc and hugs all using a collection of !InstalledPackageInfo values for the package database. In future Cabal will read back the whole !InstalledPackageInfo when working with ghc so it can do module chasing. It'd be great if we could include hugs in such a scheme too. Currently Cabal doesn't know anything about the installed packages for hugs. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/44#comment:5> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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[Hugs] #81: support --version flag
by Hugs 10 Jan '08

10 Jan '08

#81: support --version flag --------------------+------------------------------------------------------- Reporter: guest | Owner: nobody Type: defect | Status: new Priority: minor | Milestone: Component: hugs | Version: 200609 Keywords: | --------------------+------------------------------------------------------- Discovering hugs's version number is almost impossible and certainly impractical. The result is that Cabal does not know the hugs version number. As far as I can see, the only way to find the version number is to start hugs, grep the banner and translate textual months into a sensible version number, then :q to exit hugs again. Note also that hugs considers itself to be unversioned: {{{ $ hugs -98 System.Info __ __ __ __ ____ ___ _________________________________________ || || || || || || ||__ Hugs 98: Based on the Haskell 98 standard ||___|| ||__|| ||__|| __|| Copyright (c) 1994-2005 ||---|| ___|| World Wide Web: http://haskell.org/hugs || || Report bugs to: hugs-bugs(a)haskell.org || || Version: March 2005 _________________________________________ Hugs mode: Restart with command line option +98 for Haskell 98 mode Type :? for help System.Info> compilerVersion Version {versionBranch = [0,0], versionTags = []} System.Info> }}} Version 0.0 eh? Most programs support a --version command line flag that spits out the version number (and sometimes some other (un)helpful information) and then terminates. As for the format, I'd suggest: {{{ hugs --version Hugs version 2006.9 }}} That is, a version number that can fit into the Data.Version format. The reason this is important for Cabal support is that it'd allow Cabal itself or packages (via configurations) to conditionally enable/disable support for features depending on the version of hugs. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/81> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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Garbage printed
by hjgtuyl＠chello.nl 07 Jan '08

07 Jan '08

L.S., I tried the following commands: [1..] !! 5500000 [1..] !! 55000000 in WinHugs; messages about garbage collection are printed. Between the GC messages of the second command, parts of the text of the first command are repeated, see the attached image. The reason, that I attached this picture, is that copy/paste to this posting resulted in an even bigger mess: {{Gc:8375486}}Hugs> [1..] !! 5500000 {{Gc:8375457}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}5500001 (126500045 reductions, 175998568 cells, 21 garbage collections) {{Gc:8375486}}Hugs> [1..] !! 55000000 {{Gc:8375457}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc :8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:837 5450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}8568 cells, 21 garbage collections) {{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}} garbage collections) {{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}55000001 (1265000045 reductions, 1760003519 cells, 210 garbage collections) {{Gc:8375486}}Hugs> [1..] !! 5500000 {{Gc:8375457}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}5500001 (126500045 reductions, 175998568 cells, 21 garbage collections) {{Gc:8375486}}Hugs> [1..] !! 55000000 {{Gc:8375457}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc :8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:837 5450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}8568 cells, 21 garbage collections) {{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}} garbage collections) {{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375450}}{{Gc:8375451}}{{Gc:8375450}}{{Gc:8375450}}55000001 (1265000045 reductions, 1760003519 cells, 210 garbage collections) WinHugs version: Sep 2006 OS: Windows XP -- Met vriendelijke groet, Henk-Jan van Tuyl -- http://functor.bamikanarie.com http://Van.Tuyl.eu/ --

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