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<div class="subtitle">Recent Package Updates [https://wiki.haskell.org/Hackage_statistics https://wiki.haskell.org/wikiupload/b/bf/MHvNV.png] [https://hackage.haskell.org/packages/recent.rss https://wiki.haskell.org/wikiupload/7/7c/Rss16.png]</div>
''2007-04-27''
 
   
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<ul><li><p><em>GHC 6.6.1</em>. Ian Lynagh
 
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See [https://hackage.haskell.org/packages/recent here]
[http://article.gmane.org/gmane.comp.lang.haskell.glasgow.user/12075 announced] a new patchlevel release of GHC. This release contains a significant number of bugfixes relative to 6.6, so we recommend upgrading. Release notes are [http://haskell.org/ghc/docs/6.6.1/html/users_guide/release-6-6-1.html here]. 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.</p></li>
 
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<li><p><em>Xmonad 0.1</em>. Spencer Janssen
 
[http://article.gmane.org/gmane.comp.lang.haskell.general/15131 announced] the inaugural release of [http://xmonad.org Xmonad]. Xmonad is a minimalist tiling window manager for X, written in Haskell. Windows are managed using automatic layout algorithms, which can be dynamically reconfigured. At any time windows are arranged so as to maximise the use of screen real estate. All features of the window manager are accessible purely from the keyboard: a mouse is entirely optional. Xmonad is configured in Haskell, and custom layout algorithms may be implemented by the user in config files.</p></li>
 
 
<li><p><em>DisTract: Distributed Bug Tracker implemented in Haskell</em>. Matthew Sackman
 
[http://article.gmane.org/gmane.comp.lang.haskell.cafe/21857 announced] DisTract, a [http://www.distract.wellquite.org/ Distributed Bug Tracker]. We're all now familiar with working with distributed software control systems, such as Monotone, Git, Darcs, Mercurial and others, but bug trackers still seem to be fully stuck in the centralised model: Bugzilla and Trac both have single centralised servers. This is clearly wrong, as if you're able to work on the Train, off the network and still perform local commits of code then surely you should also be able to locally close bugs too. DisTract allows you to manage bugs in a distributed manner through your web-browser. The distribution is achieved by making use of a distributed software control system, Monotone. Thus Monotone is used to move files across the network, perform merging operations and track the development of every bug. Finally, the glue in the middle that generates the HTML summaries and modifies the bugs is written in Haskell.</p></li>
 
 
<li><p><em>IOSpec 0.1</em>. Wouter Swierstra
 
[http://article.gmane.org/gmane.comp.lang.haskell.general/15134 announced] the first release of the [http://www.cs.nott.ac.uk/~wss/repos/IOSpec Test.IOSpec library], that provides a pure specification of some functions in the IO monad. This may be of interest to anyone who wants to debug, reason about, analyse, or test impure code. Essentially, by importing libraries from IOSpec you can the same code you would normally write in the IO monad. Once you're satisfied that your functions are reasonably well-behaved, you can remove the Test.IOSpec import and replace it with the 'real' functions instead.</p></li>
 
 
<li><p><em>wl-pprint-1.0: Wadler/Leijen pretty printer</em>. Stefan O'Rear
 
[http://thread.gmane.org/gmane.comp.lang.haskell.general/15112 announced] wl-pprint-1.0, the classic Wadler / Leijen pretty printing combinators, now in 100% easier to use [http://hackage.haskell.org/cgi-bin/hackage-scripts/package/wl-pprint-1.0 Cabalised form!] PPrint is an implementation of the pretty printing combinators described by Philip Wadler (1997). In their bare essence, the combinators of Wadler are not expressive enough to describe some commonly occurring layouts. The PPrint library adds new primitives to describe these layouts and works well in practice. </p></li>
 
 
<li><p><em>London Haskell User Group</em>. Neil Bartlett
 
[http://article.gmane.org/gmane.comp.lang.haskell.cafe/21955 announced] the first meeting of the [http://www.londonhug.net/2007/04/26/announcement-first-meeting-of-the-london-haskell-user-group/ London Haskell User Group] on Wednesday 23rd May from 6:30PM. The meeting will be held at City University's main campus in central London, and Simon Peyton Jones will be coming to give a talk.</p></li>
 
 
<li><p><em>New York Functional Programmers Network</em>. Howard Mansell
 
[http://article.gmane.org/gmane.comp.lang.haskell.cafe/21856 announced] a New York area-based network for Haskell (and functional) programmers. The idea is to have a regular meeting through which functional programmers can meet to discuss experiences, get and give information, find jobs.</p></li>
 
 
<li><p><em>Data.Proposition 0.1</em>. Neil Mitchell
 
[http://article.gmane.org/gmane.comp.lang.haskell.general/15117 announced] the release of [http://www-users.cs.york.ac.uk/~ndm/proposition/ Data.Proposition], a library that handles propositions, logical formulae consisting of literals without quantification. It automatically simplifies a proposition as it is constructed using simple rules provided by the programmer. Implementations of propositions in terms of an abstract syntax tree and as a Binary Decision Diagram (BDD) are provided. A standard interface is provided for all propositions.</p></li>
 
 
<li><p><em>Book reviews for the Journal of Functional Programming</em>. Simon Thompson
 
[http://article.gmane.org/gmane.comp.lang.haskell.general/15136 sought] interested contributors for book reivews for the Journal of Functional Programming. There is a list of books [http://www.cs.kent.ac.uk/people/staff/sjt/JFP/available.html currently available] for review.</p></li>
 
 
<li><p><em>Reminder: HCAR May 2007</em>. Andres Loeh
 
[http://article.gmane.org/gmane.comp.lang.haskell.general/15161 reminded] us that the deadline for the May 2007 edition of the Haskell Communities and Activities Report is only a few days away -- but this is still enough time to make sure that the report contains a section on your project, on the interesting stuff that you've been doing; using or affecting Haskell in some way.</p></li>
 
 
<li><p><em>Template 0.1: Simple string substitution</em>. Johan Tibell
 
[http://article.gmane.org/gmane.comp.lang.haskell.general/15135 announced] a simple [http://darcs.johantibell.com/template string substitution library] that supports substitution ala Perl or Python.</p></li>
 
 
<li><p><em>hpaste for emacs</em>. David House
 
[http://thread.gmane.org/gmane.comp.lang.haskell.glasgow.user/12046 announced] hpaste.el, an Emacs Lisp library that integrates [http://hpaste.org hpaste], the Haskell pastebin, into Emacs. It provides two functions, hpaste-paste-region and hpaste-paste-buffer, which send the region or buffer to the hpaste server as required.</p></li></ul>
 
 
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