- Haskell - Haskell.org

ANNOUNCE: GHC version 7.6.3
by Ian Lynagh 25 Apr '13

25 Apr '13

============================================================= The (Interactive) Glasgow Haskell Compiler -- version 7.6.3 ============================================================= The GHC Team is pleased to announce a new patchlevel release of GHC, 7.6.3. This is a bugfix release relative to 7.6.2, so we recommend upgrading. Full release notes are here: http://www.haskell.org/ghc/docs/7.6.3/html/users_guide/release-7-6-3.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. 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://hackage.haskell.org/trac/ghc/wiki/Building 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/ Some GHC developers 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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ANN: data-textual: Human-friendly textual representations
by Mikhail Vorozhtsov 24 Apr '13

24 Apr '13

Hello lists, I'm pleased to announce the first release of data-textual[1], a library that provides human-friendly counterparts (called Printable/Textual) of the compiler-friendly Show/Read type classes. The library is intended to be used for printing and parsing of non-compound and non-polymorphic compound data (e.g. numbers, network and hardware addresses, date/time, etc). A quick example (vs network-ip[2] library): λ> import Data.Maybe (fromJust) λ> import Data.Textual λ> import Network.IP.Addr λ> let x = fromString "[dead::b:e:e:f]:123" :: Maybe Inet6Addr λ> x Just (InetAddr {inetHost = ip6FromWords 0xdead 0x0 0x0 0x0 0xb 0xe 0xe 0xf, inetPort = 123}) λ> toString (fromJust x) "[dead::b:e:e:f]:123" λ> let y = fromStringAs aNet4Addr "192.168.100.1/24" λ> y Just (netAddr (ip4FromOctets 192 168 100 1) 24) λ> toText (netPrefix $ fromJust y) "192.168.100.0" [1] http://hackage.haskell.org/package/data-textual [2] http://hackage.haskell.org/package/network-ip

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Fwd: ACM SIGPLAN Erlang Workshop 2013 Call For Papers
by Laura M. Castro 22 Apr '13

22 Apr '13

Hello, Please find below the First Call for Papers for the Twelfth ACM SIGPLAN Erlang Workshop. Apologies for any duplicates you may receive. CALL FOR PAPERS ================= Twelfth ACM SIGPLAN Erlang Workshop ----------------------------------------------------------- Boston, Massachusetts, September 28, 2013 (tentative date, subject to change) Satellite event of the 18th ACM SIGPLAN International Conference on Functional Programming (ICFP 2013) September 25-27, 2013 Erlang is a concurrent, distributed functional programming language aimed at systems with requirements of massive concurrency, soft real time response, fault tolerance, and high availability. It has been available as open source for 15 years, creating a community that actively contributes to its already existing rich set of libraries and applications. Originally created for telecom applications, its usage has spread to other domains including e-commerce, banking, databases, and computer telephony and messaging. Erlang programs are today among the largest applications written in any functional programming language. These applications offer new opportunities to evaluate functional programming and functional programming methods on a very large scale and suggest new problems for the research community to solve. This workshop will bring together the open source, academic, and industrial programming communities of Erlang. It will enable participants to familiarize themselves with recent developments on new techniques and tools tailored to Erlang, novel applications, draw lessons from users' experiences and identify research problems and common areas relevant to the practice of Erlang and functional programming. We invite three types of submissions. 1. Technical papers describing language extensions, critical discussions of the status quo, formal semantics of language constructs, program analysis and transformation, virtual machine extensions and compilation techniques, implementations and interfaces of Erlang in/with other languages, and new tools (profilers, tracers, debuggers, testing frameworks, etc.). The maximum length for technical papers is restricted to 12 pages. 2. Practice and application papers describing uses of Erlang in the "real-world", Erlang libraries for specific tasks, experiences from using Erlang in specific application domains, reusable programming idioms and elegant new ways of using Erlang to approach or solve a particular problem. The maximum length for the practice and application papers is restricted to 12 pages. Note that this is a maximum length; we welcome shorter papers also, and the program committee will evaluate all papers on an equal basis independent of their lengths. 3. Poster presentations describing topics related to the workshop goals. Each includes a maximum of 2 pages of the abstract and summary. Presentations in this category will be given an hour of shared simultaneous demonstration time. Workshop Chair ----------------------- Steve Vinoski, Basho Technologies, USA Program Chair ------------------- Laura M. Castro, University of A Coruña, Spain Program Committee ----------------------------- (Note: the Workshop and Program Chairs are also committee members) Lars-Ake Fredlund, Universidad Politécnica de Madrid, Spain Kevin Hammond, University of St. Andrews, UK Torben Hoffman, Erlang Solutions Limited, UK Zoltán Horváth, Eötvös Loránd University, Hungary Kenneth Lundin, Ericsson AB, Sweden Mickaël Rémond, ProcessOne, France Kenji Rikitake, Basho Japan KK, Japan Simon Thompson, University of Kent, UK Important Dates ----------------------- Submission deadline: Fri June 14, 2013 Author notification: Thu July 11, 2013 Final submission for the publisher: Thu July 25, 2013 Workshop date (tentative, subject to change): September 28, 2013 Instructions to authors -------------------------------- Papers must be submitted online via EasyChair (via the "Erlang2013" event). The submission page is https://www.easychair.org/conferences/?conf=erlang2013 Submitted papers should be in portable document format (PDF), formatted using the ACM SIGPLAN style guidelines. Each submission must adhere to SIGPLAN's republication policy. Violation risks summary rejection of the offending submission. Accepted papers will be published by the ACM and will appear in the ACM Digital Library. Paper submissions will be considered for poster submission in the case they are not accepted as full papers. Venue & Registration Details ------------------------------------------ For registration, please see the ICFP 2013 web site at: http://icfpconference.org/icfp2013/ Related Links -------------------- ICFP 2013 web site: http://www.icfpconference.org/icfp2013/ Past ACM SIGPLAN Erlang workshops: http://www.erlang.org/workshop/ Open Source Erlang: http://www.erlang.org/ EasyChair submission site: https://www.easychair.org/account/signin.cgi?conf=erlang2013 Author Information for SIGPLAN Conferences: http://www.sigplan.org/authorInformation.htm

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CFP SBLP 2013: Deadline extension
by Andre Rauber Du Bois 22 Apr '13

22 Apr '13

[Apologies if you receive multiple copies of this CFP] ======================================================= CALL FOR PAPERS 17th BRAZILIAN SYMPOSIUM ON PROGRAMMING LANGUAGES Brasília, Distrito Federal, Brazil September 29th to October 4th, 2013 http://cbsoft2013.unb.br/en/sblp-en ======================================================== IMPORTANT DATES Paper abstract submission (15 lines): May 6th, 2013 (extended deadline) Full paper submission: May 10th, 2013 (extended deadline) Notification of acceptance: June 7, 2013 Final papers due: June 28th, 2013 INVITED SPEAKERS * Tim Harris, Oracle Labs * More TBA INTRODUCTION The 17th Brazilian Symposium on Programming Languages, SBLP 2013, will be held in Brasília, Brazil, on September 29th to October 4th, 2013. SBLP provides a venue for researchers and practitioners interested in the fundamental principles and innovations in the design and implementation of programming languages and systems. The symposium will be part of the 4th Brazilian Conference on Software: Theory and Practice, CBSoft 2013, http://cbsoft2013.cic.unb.br/, which will host four traditional, well-established symposia: * XXVII Brazilian Symposium on Software Engineering (SBES) * XVII Brazilian Symposium on Programming Languages (SBLP) * XVI Brazilian Symposium on Formal Methods (SBMF) * VII Brazilian Symposium on Components, Software Architecture and Software Reuse (SBCARS) SBLP 2013 invites authors to contribute with technical papers related (but not limited) to: * Program generation and transformation, including domain-specific languages and model-driven development in the context of programming languages. * Programming paradigms and styles, including functional, object-oriented, aspect-oriented, scripting languages, real-time, service-oriented, multithreaded, parallel, and distributed programming. * Formal semantics and theoretical foundations, including denotational, operational, algebraic and categorical. * Program analysis and verification, including type systems, static analysis and abstract interpretation. * Programming language design and implementation, including new programming models, programming language environments, compilation and interpretation techniques. SUBMISSIONS Contributions should be written in Portuguese or English. We solicit papers that should fall into one of two different categories: full papers, with at most 15 pages, or short papers, with at most 5 pages. Full papers submitted in English will be published in a volume of Lecture Notes in Computer Science (LNCS), by Springer. For this reason, all papers must be prepared using the LNCS template, available at http://www.springer.com/computer/lncs?SGWID=0-164-6-793341-0. We encourage the submission of short papers reporting on partial results of on-going master dissertations or doctoral theses. All accepted papers will be published in the conference proceedings distributed in a digital media by the CBSOFT organizers. Submissions should be done using SBLP 2013 installation of the EasyChair conference mangement system at http://www.easychair.org/conferences/?conf=sblp2013. As in previous editions, a journal special issue, with selected papers from accepted contributions, is anticipated. Selected papers from 2003 to 2008 editions of SBLP were published in special issues of the Journal of Universal Computer Science, by Springer. The post-proceedings of SBLP from 2009 to 2012, also with selected papers from the conference proceedings, are being edited as special issues of Science of Computer Programming, published by Elsevier. CBSOFT CHAIRS Genaina Nunes Rodrigues, UnB Rodrigo Bonifácio, UnB Diego Aranha, UnB PROGRAMME CHAIRS André Rauber Du Bois, UFPel Phil Trinder, Glasgow University PROGRAMME COMMITTEE Alberto Pardo, Univ. de La Republica Alex Garcia, IME Alvaro Freitas Moreira, UFRGS André Rauber Du Bois, UFPel (co-chair) Andre Santos, UFPE Carlos Camarao, UFMG Christiano Braga, UFF Edwin Brady, University of St. Andrews Fernando Castor Filho, UFPE Fernando Quintão Pereira, UFMG Francisco Heron de Carvalho Junior, UFC Hans-Wofgang Loidl, Heriot-Watt University Jeremy Singer, Glasgow University Joao Saraiva, Universidade do Minho João F. Ferreira, Teesside University Lucilia Figueiredo, UFOP Luis Soares Barbosa, Univ. do Minho Manuel António Martins, Univ. de Aveiro Marcelo A. Maia, UFU Marcello Bonsangue, Leiden Univ/CWI Marcelo d'Amorim, UFPE Marco Tulio Valente, UFMG Mariza A. S. Bigonha, UFMG Martin A. Musicante, UFRN Noemi Rodriguez, PUC-Rio Peter Mosses, Swansea University Phil Trinder, Glasgow University (co-chair) Qiu Zongyang, Beijing University Rafael Dueire Lins, UFPE Renato Cerqueira, PUC-Rio Ricardo Massa, UFPE Roberto S. Bigonha, UFMG Roberto Ierusalimschy, PUC-Rio Sandro Rigo, UNICAMP Sergio Soares, UFPE Simon Thompson, Univ. of Kent Varmo Vene, Univ. de Tartu

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WRS 2013 - 2nd Call for Papers
by Jeroen Ketema 20 Apr '13

20 Apr '13

------------------------- WRS 2013: CALL FOR PAPERS ------------------------- 11th International Workshop on Reduction Strategies in Rewriting and Programming (WRS 2013) http://multicore.doc.ic.ac.uk/events/wrs2013/ 27 June 2013, Eindhoven, the Netherlands IMPORTANT DATES * Paper submission deadline: 24 April 2013 * Notification of acceptance: 22 May 2013 * Preliminary proceedings version due: 5 June 2013 * Workshop: 27 June 2013 * Paper submission for final proceedings: TBA * Notification of acceptance: TBA * Final version due: TBA AIMS AND SCOPE The WRS workshop promotes research and collaboration in the area of reduction strategies in rewriting and programming. It encourages the presentation of new directions, developments, and results as well as surveys and tutorials on existing knowledge in this area. Reduction strategies define which (sub)expression(s) should be selected for evaluation and which rule(s) should be applied. These choices affect fundamental properties of computations such as laziness, strictness, completeness, and efficiency, to name a few. For this reason programming languages such as Elan, Maude, OBJ, Stratego, and TOM allow the explicit definition of the evaluation strategy, whereas languages such as Clean, Curry, and Haskell allow its modification. In addition to strategies in rewriting and programming, WRS also covers the use of strategies and tactics in other areas such as theorem and termination proving. Previous editions of the workshop were held in Utrecht (2001), Copenhagen (2002), Valencia (2003), Aachen (2004), Nara (2005), Seattle (2006), Paris (2007), Hagenberg (2008), Brasilia (2009), Edinburgh (2010), Novi Sad (2011), and Manchester (2012); the 2010 and 2012 editions were joint with the STRATEGIES workshop. Further information can be found at the permanent site for WRS (http://users.dsic.upv.es/~wrs/) WRS 2013 will be co-located with RTA 2013 (24th International Conference on Rewriting Techniques and Applications), as a satellite event of RDP, the Federated Conference on Rewriting, Deduction, and Programming. WRS 2013 will be held on 27 June in Eindhoven, the Netherlands. PAPER SUBMISSION AND PUBLICATION The submission process is in two stages. * Before the workshop, authors are invited to submit an extended abstract (max. 5 pages) to be formatted in the EasyChair class style through the EasyChair submission site: https://www.easychair.org/conferences/?conf=wrs2013 Accepted abstracts will be presented at the workshop and included in the preliminary proceedings, available at the workshop. * After the workshop, authors will be invited to submit a full paper of their presentation (typically a 15-pages paper), which will be refereed and considered for publication in an electronic journal, such as Electronic Proceedings in Theoretical Computer Science. Beyond original ideas and recent results not published nor submitted elsewhere, we also invite authors to submit a 5-pages abstract describing relevant work that has been or will be published elsewhere, or work in progress. These submissions will be only considered for presentation at the workshop and inclusion in the preliminary proceedings but not in the final proceedings. INVITED SPEAKER * Eelco Visser, Delft Univerity of Technology, the Netherlands PROGRAM COMMITTEE * Sandra Alves, University of Porto * Isabelle Gnaedig, LORIA and INRIA Nancy * Bernhard Gramlich, Technische Universität Wien * Jürgen Giesl, RWTH Aachen * Jeroen Ketema, Imperial College Londen (co-chair) * Dorel Lucanu, "Alexandru Ioan Cuza" University * Hans Zantema, Eindhoven University of Technology (co-chair)

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ANNOUNCE: hlibgit2 0.18.0.1
by John Wiegley 20 Apr '13

20 Apr '13

I just upgraded hlibgit2 to libgit2 0.18 (Big Ben). This was a huge upgrade, which changed quite a few interfaces (mostly relating to references), but also adds a great deal of functionality, such as downloading packfiles from local repositories, abstracting of "reference backends", and a lot more. Be aware that you'll now need to startup and shutdown applications as follows: main = do c'git_threads_init finally go (performGC >> c'git_threads_shutdown) where go = ... At least until https://github.com/libgit2/libgit2/issues/1492 is addressed in a more satisifying way. Please let me know of any issues you encounter here: https://github.com/fpco/gitlib Thank you, -- John Wiegley FP Complete Haskell tools, training and consulting http://fpcomplete.com johnw on #haskell/irc.freenode.net

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Job openings for experienced Haskell Programmers (working remotely)
by Amanda Schwoegler 18 Apr '13

18 Apr '13

*Haskell Programmers for FPGA Systems* * > > Parallel Scientific, Inc. is a Boulder, Colorado based company working on > a variety of aspects of parallel programming. We seek experienced Haskell > programmers to join the team building a Haskell based DSL to compile to > FPGA hardware language. > > Parallel Scientific was founded by Dr Peter Braam in 2010. Peter formerly > taught mathematics and computer science at Oxford and Carnegie Mellon. Then > he contributed file systems to Linux and invented Lustre (which provides > storage to 9 of the top 10 systems in the world). He ran several successful > startups, and Parallel Scientific is run by an very experienced management > team and board. > > Successful candidates will work in a modern virtual environment in their > homes and collaborate with a distributed team. Some travel may be > required. English language skills are necessary. > > > We are looking for two candidates in total. One candidate must be a United > States citizen, but the other can reside in Europe, Ukraine or Russia. > * > > Required Skills: > - Strong background in computer science or mathematics. > - Experience with Haskell, or other functional languages (e.g. Erlang - > with a willingness and ability to learn Haskell quickly) > - Excellent communication skills - Prepared to give it all for an excellent opportunity > * > > * > *Desired skills:* > > *- Experience with FPGA hardware and programming* > > The company offers competitive employment packages with benefits. *To apply, please send a resume to jobs@parsci.com.*

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Job opening for Haskell developer in Nijmegen, Netherlands
by Roel van Dijk 18 Apr '13

18 Apr '13

Sensor Sense is looking for a software developer to work on the design and implementation of ultra-sensitive trace gas detectors. These instruments belong to the most sensitive in the world. You will work closely with physicists, electronic – and mechanical engineers to design new detectors and improve existing detectors. As a software developer you will be responsible for the complete design and implementation of the software required to operate these instruments. This includes embedded software for data-acquisition, measuring algorithms, data analysis and user interface design. For the next generation of detectors we are developing, we have chosen Haskell to write the control software. Except for some low-level embedded C code, Haskell is used for everything else: interfacing with custom hardware, data analysis and handling the web-based user interface. The ideal candidate has experience with C and Python and is familiar with functional programming. Experience with Haskell is certainly a plus. But rather than developers with experience in specific languages we are looking for fast learners with a flexible mindset. Sensor Sense is a young spin-off company based in Nijmegen (NL). See our website www.sensor-sense.nl for more information. If you are interested or have questions please contact Sacco te Lintel Hekkert at lintelhekkert(a)sensor-sense.nl.

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Call for Papers: Workshop on Functional Art, Music, Modeling, and Design (colocated with ICFP)
by Brent Yorgey 18 Apr '13

18 Apr '13

====================================================================== FARM 2013: Call for Papers ACM SIGPLAN Workshop on Functional Art, Music, Modeling and Design Boston, Massachusetts, USA 28th September, 2013 (directly after ICFP) http://www.cis.upenn.edu/~byorgey/farm13/ ====================================================================== Scope ----- The functional programming community is largely interested in writing beautiful programs. This workshop is intended to gather researchers and practitioners interested in writing beautiful programs that generate beautiful artifacts. Such artifacts may include visual art, music, 3D sculptures, animations, GUIs, video games, physical models, architectural models, choreographies for dance, poetry, and even physical objects such as VLSI layouts, GPU configurations, or mechanical engineering designs. The framework used need not be purely functional (“mostly functional” is fine); may be based on abstractions such as higher-order functions, monads, arrows, or streams; and may be manifested as a domain specific language or tool. Theoretical foundations, language design, implementation issues, and applications are all within the scope of the workshop. Important dates --------------- - Submissions due: Friday, 14 June 2013, 23:59 UTC-11 (American Samoa time [1]) - Author notification: Thursday, 11 July 2013 - Final papers due: Thursday, 25 July 2013 - Workshop: Saturday, 28 September 2013 (the day after ICFP) [1] http://www.timeanddate.com/worldclock/fixedtime.html?msg=FARM+submissions+d… Proceedings ----------- There will be a formal proceedings published by ACM Press. Accepted papers will be included in the ACM Digital Library; see http://authors.acm.org/main.cfm for information on the options available to authors. Authors are also encouraged to submit auxiliary material for publication along with their paper (source code, data, videos, images, etc.); authors retain all rights to the auxiliary material. Submission details ------------------ We solicit submissions in two categories: - Full papers. A full paper is limited to 12 pages, and will be evaluated according to its relevance, correctness, significance, originality, and clarity. It should explain its contributions, identify what has been accomplished, explain why it is significant, and compare it with previous work. - "Aesthetic applications". An aesthetic application paper is limited to 6 pages, and will be judged primarily on the effective and elegant use of FP to generate aesthetic artifacts (though the criteria for full papers are still relevant). Submitted papers should be in portable document format (PDF), formatted using the ACM SIGPLAN style guidelines. The text should be in a 9-point font in two columns. Submissions can be made via EasyChair at https://www.easychair.org/conferences/?conf=farm2013 Organizers ---------- Workshop Chair: Paul Hudak Program Chair: Conal Elliott Publicity Chair: Brent Yorgey Program Committee ----------------- Daniel Cukier (AgileAndArt) Conal Elliott (Tabula) (chair) Kathleen Fisher (Tufts University) Richard Gabriel (IBM Research) George Giorgidze (University of Tübingen) Paul Hudak (Yale University) José Pedro Magalhães (University of Oxford) Alex McLean (ICSRiM) John Peterson (Western State Colorado University) Michael Sperber (Active Group) Henning Thielemann (Martin-Luther-Universität Halle-Wittenberg) Brent Yorgey (University of Pennsylvania)

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Oregon PL Summer School: register by April 30th
by Amal Ahmed 17 Apr '13

17 Apr '13

*** The registration deadline for this year's Oregon PL Summer School has been extended to April 30th. This year's Oregon Programming Languages Summer School will take place from July 22nd to August 3rd. Full information on registration and scholarships an be found here: http://www.cs.uoregon.edu/Activities/summerschool The school has a long and successful tradition (sponsored by the NSF, ACM SIGPLAN, and industry). It covers current research in the theory and practice of programming languages. Material is presented at a tutorial level that will help graduate students and researchers from academia or industry understand the critical issues and open problems confronting the field. Prerequisites are an elementary knowledge of logic and mathematics, as covered in undergraduate classes on discrete mathematics, and some knowledge of programming languages at the level of an undergraduate survey course. A new feature this year is a Coq boot camp session, to be held on July 21st -- one day before the summer school officially begins. The boot camp will provide a one-day, intensive, hands-on introduction to the practical mechanics of the Coq proof assistant. More information is available at the summer school website. This year's program is titled Types, Logic, and Verification. The speakers and topics include: Amal Ahmed -- Logical Relations Northeastern University Robert Harper -- Type Theory Foundations Carnegie Mellon University Dan Licata -- Dependently-Typed Programming in Agda Carnegie Mellon University and Institute for Advanced Study Greg Morrisett -- Coq as a Programming Language Harvard University Simon Peyton-Jones -- Adventures with Types in Haskell Microsoft Research Frank Pfenning -- Linear Logic and Session-based Concurrency Carnegie Mellon University Andrew Tolmach -- Software Foundations in Coq Portland State University Stephanie Weirich -- Designing Dependently-Typed Programming Languages University of Pennsylvania Steve Zdancewic -- Verifying LLVM Optimizations in Coq University of Pennsylvania We hope you can join us for this excellent program! Amal Ahmed Zena Ariola Bob Constable Frank Pfenning Benjamin Pierce OPLSS 2013 organizers

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