May 2006 - Glasgow-haskell-users

On GHC HEAD, Fefora Cote 5 and SELinux
by wld 03 May '06

03 May '06

As described in trac ticket 738, GHC HEAD does not work on Fedora Core 5 with selinux in enforcing mode. Selinux is the additional level of protection in Linux kernel that works above usual Unix permissions. Turning selinux to permissive mode (as suggested in the workaround to make GHC work) actually disables *all* protection. I think, many users of FC5 do not see it as workaround at all. I found a much lighter workaround - just to allow processes to execute in heap. In GUI: Menu System -> Administration -> Security Level and Firewall -> tab SELinux, in the tree control open an item Other turn on allow_execheap On command line (as root): setsebool -P allow_execheap 1 There are three related "booleans" to try (just in case the trick above does not help) allow_execmem allow_execmod allow_execstack PS. This works for the targeted selinux policy, which is default in Fedora 5. There are also strict and mls policies. I am not selinux guru -I do not know if my workaround works for those policies. V.Rudenko -- lambda is the ultimate

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RE: [Haskell] (GHC) Boot files and instance declarations
by Simon Peyton-Jones 03 May '06

03 May '06

At the moment GHC just doesn't support this, I'm afraid. It's a shortcoming, and one that could be fixed, but not in a minute or two. You'll have to find some other way to reorganise your code, I think. Incidentally questions specific to GHC belong on ghc-users, to which I have redirected this message Simon | -----Original Message----- | From: haskell-bounces(a)haskell.org [mailto:haskell-bounces@haskell.org] On Behalf Of David House | Sent: 02 May 2006 21:36 | To: haskell(a)haskell.org | Subject: [Haskell] (GHC) Boot files and instance declarations | | Hi all. A quick bootfiles question. | | The GHC docs specify not to put instance decls in bootfiles. However, | what if i need to? For example, say I have a module A where I'm | importing a module B with the {-# SOURCE #-} pragma. Module A needs to | know that the types in module B are instances of some typeclasses | (instance declarations for which are given in module B). How would I | manage this? | | Thanks in advance. | | -- | -David House, dmhouse(a)gmail.com, http://xmouse.ithium.net | _______________________________________________ | Haskell mailing list | Haskell(a)haskell.org | http://www.haskell.org/mailman/listinfo/haskell

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ANNOUNCE: GHC vesrion 6.4.2
by Simon Marlow 02 May '06

02 May '06

============================================================= The (Interactive) Glasgow Haskell Compiler -- version 6.4.2 ============================================================= The GHC Team is pleased to announce a new patchlevel release of GHC. This release contains a significant number of bugfixes relative to 6.4.1, so we recommend upgrading. Highlights in this release: - Cabal has been upgraded to version 1.1.4. While strictly speaking this breaks our rules about not changing any library APIs in a patchlevel release, it was felt that the Cabal shipped in 6.4.1 was lacking in various ways, and it was more important to provide a Cabal that works with more existing packages. Some distributions of GHC were already supplying an upgraded Cabal by default. With the exception of Cabal, and OpenAL which was also upgraded, all library APIs are identical to 6.4.1. Release notes are here: http://haskell.org/ghc/docs/6.4.2/html/users_guide/release-6-4-2.html How to get it ~~~~~~~~~~~~~ The easy way is to go to the web page, which should be self-explanatory: http://www.haskell.org/ghc/ We supply binary builds in the native package format for many platforms, and the source distribution is available from the same place. Packages will appear as they are built - if the package for your system isn't available yet, please try again later. Background ~~~~~~~~~~ Haskell is a standard lazy functional programming language; the current language version is Haskell 98, agreed in December 1998 and revised December 2002. GHC is a state-of-the-art programming suite for Haskell. Included is an optimising compiler generating good code for a variety of platforms, together with an interactive system for convenient, quick development. The distribution includes space and time profiling facilities, a large collection of libraries, and support for various language extensions, including concurrency, exceptions, and foreign language interfaces (C, whatever). GHC is distributed under a BSD-style open source license. A wide variety of Haskell related resources (tutorials, libraries, specifications, documentation, compilers, interpreters, references, contact information, links to research groups) are available from the Haskell home page (see below). On-line GHC-related resources ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Relevant URLs on the World-Wide Web: GHC home page http://www.haskell.org/ghc/ GHC developers' home page http://hackage.haskell.org/trac/ghc/ Haskell home page http://www.haskell.org/ Supported Platforms ~~~~~~~~~~~~~~~~~~~ The list of platforms we support, and the people responsible for them, is here: http://hackage.haskell.org/trac/ghc/wiki/Contributors Ports to other platforms are possible with varying degrees of difficulty. The Building Guide describes how to go about porting to a new platform: http://www.haskell.org/ghc/docs/latest/html/building/building-guide.html Developers ~~~~~~~~~~ We welcome new contributors. Instructions on accessing our source code repository, and getting started with hacking on GHC, are available from the GHC's developer's site run by Trac: http://hackage.haskell.org/trac/ghc/ Mailing lists ~~~~~~~~~~~~~ We run mailing lists for GHC users and bug reports; to subscribe, use the web interfaces at http://www.haskell.org/mailman/listinfo/glasgow-haskell-users http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs There are several other haskell and ghc-related mailing lists on www.haskell.org; for the full list, see http://www.haskell.org/mailman/listinfo/ GHC developers occasionally hang out on #haskell on IRC, too: http://www.haskell.org/haskellwiki/IRC_channel Please report bugs using our bug tracking system. Instructions on reporting bugs can be found here: http://www.haskell.org/ghc/reportabug

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