Hi,
I'm having a compile issue with multirec TH. Upon investigation, it
seems the same problem occurs in the compilation of one of the
examples in the multirec distribution:
domi@arial:/tmp> wget -q
http://hackage.haskell.org/packages/archive/multirec/0.4.1/multirec-0.4.1.t…
domi@arial:/tmp> tar xzf multirec-0.4.1.tar.gz
domi@arial:/tmp> cd multirec-0.4.1/examples
domi@arial:/tmp/multirec-0.4.1/examples> ghc --make ASTTHUse.hs
[1 of 2] Compiling AST ( AST.hs, AST.o )
[2 of 2] Compiling ASTTHUse ( ASTTHUse.hs, ASTTHUse.o )
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Loading package array-0.3.0.0 ... linking ... done.
Loading package containers-0.3.0.0 ... linking ... done.
Loading package pretty-1.0.1.1 ... linking ... done.
Loading package template-haskell ... linking ... done.
Loading package multirec-0.4.1 ... linking ... done.
ASTTHUse.hs:31:2:
GADT pattern match in non-rigid context for `Tag'
Probable solution: add a type signature for `to'
In the pattern: Tag L C K f0
In the pattern: L Tag L C K f0
In the definition of `to': to Expr L Tag L C K f0 = Const f0
domi@arial:/tmp/multirec-0.4.1/examples> ghc --version
The Glorious Glasgow Haskell Compilation System, version 6.12.1
Can you please tell me if this is a known problem and if so, if there
is a workaround?
Thanks in advance for your help!
Dominique
Dear all,
This is the final reminder that the deadline for WGP submission is in one
week (13th of June). See the call for papers below:
======================================================================
CALL FOR PAPERS
WGP 2010
6th ACM SIGPLAN Workshop on Generic Programming
Baltimore, Maryland, US
Sunday, September 26th, 2010
http://osl.iu.edu/wgp2010
Collocated with the International Conference on Functional Programming
(ICFP 2010)
======================================================================
Goals of the workshop
---------------------
Generic programming is about making programs more adaptable by making
them more general. Generic programs often embody non-traditional kinds
of polymorphism; ordinary programs are obtained from them by suitably
instantiating their parameters. In contrast with normal programs, the
parameters of a generic program are often quite rich in structure; for
example they may be other programs, types or type constructors, class
hierarchies, or even programming paradigms.
Generic programming techniques have always been of interest, both to
practitioners and to theoreticians, and, for at least 20 years,
generic programming techniques have been a specific focus of research
in the functional and object-oriented programming communities. Generic
programming has gradually spread to more and more mainstream
languages, and today is widely used in industry. This workshop brings
together leading researchers and practitioners in generic programming
from around the world, and features papers capturing the state of the
art in this important area.
We welcome contributions on all aspects, theoretical as well as
practical, of
* polytypic programming,
* programming with dependent types,
* programming with type classes,
* programming with (C++) concepts,
* generic programming,
* programming with modules,
* meta-programming,
* adaptive object-oriented programming,
* component-based programming,
* strategic programming,
* aspect-oriented programming,
* family polymorphism,
* object-oriented generic programming,
* and so on.
Organizers
----------
Co-Chair
Bruno C. d. S. Oliveira, Seoul National University
Co-Chair
Marcin Zalewski, Indiana University
Programme Committee
-------------------
Alley Stoughton, Kansas State University
Andrei Alexandrescu, Facebook
Bruno C. d. S. Oliveira (Co-Chair), Seoul National University
Doug Gregor, Apple
Gilad Bracha, I am a Computational Theologist Emeritus
Magne Haveraaen, Universitetet i Bergen
Marcin Zalewski (Co-Chair), Indiana University
Neil Mitchell, Standard Chartered
Ralf Lämmel, University of Koblenz-Landau
Shin-Cheng Mu, Academia Sinica
Thorsten Altenkirch, University of Nottingham
Ulf Norell, Chalmers University
Important Information
---------------------
We plan to have formal proceedings, published by the ACM.
Submission details
Deadline for submission: Sunday 2010-06-13
Notification of acceptance: Monday 2010-07-12
Final submission due: Tuesday 2010-07-27
Workshop: Sunday 2010-09-26
Authors should submit papers, in postscript or PDF format, formatted
for A4 paper, to the WGP09 EasyChair instance by 13th of June
2010. The length should be restricted to 12 pages in standard
(two-column, 9pt) ACM format. Accepted papers are published by the ACM
and will additionally appear in the ACM digital library.
History of the Workshop on Generic Programming
----------------------------------------------
This year:
* Baltimore, Maryland, US 2010 (affiliated with ICFP10)
Earlier Workshops on Generic Programming have been held in
* Edinburgh, UK 2009 (affiliated with ICFP09)
* Victoria, BC, Canada 2008 (affiliated with ICFP),
* Portland 2006 (affiliated with ICFP),
* Ponte de Lima 2000 (affiliated with MPC),
* Marstrand 1998 (affiliated with MPC).
Furthermore, there were a few informal workshops
* Utrecht 2005 (informal workshop),
* Dagstuhl 2002 (IFIP WG2.1 Working Conference),
* Nottingham 2001 (informal workshop),
There were also (closely related) DGP workshops in Oxford (June
3-4 2004), and a Spring School on DGP in Nottingham (April 24-27
2006, which had a half-day workshop attached).
Additional information:
The WGP steering committee consists of J Gibbons, R Hinze, P Jansson,
J Jarvi, J Jeuring, B Oliveira, S Schupp and M Zalewski
