January 2003 - Hat - Haskell.org

solved: [Fwd: "-package hat library not found." problem]
by Kate Krastev 22 Jan '03

22 Jan '03

nerver mind. sorted it out :) (I was placing the Hat library in nhc98-1.14a/lib/nhc98/ instead of its $MACHINE subdir) Cheers, Kate -- Kate Krastev Computing Department Macquarie University Phone: (02) 9850 6345

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"-package hat library not found." problem
by Kate Krastev 21 Jan '03

21 Jan '03

Hi, I'm trying to run Hat. Installed nhc98 in my space : ~/nhc98-1.14a hat compiled separately and then copied the stuff across to the nhc tree When I try to run hmake -hat hello.hs it gives me: Warning: -package hat library not found. What have I done wrong? Cheers, Kate Krastev -- Kate Krastev PhD Student Computing Department Macquarie University Phone: (02) 9850 6345

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bugs, fixes and a wishlist item
by Isaac Jones 17 Jan '03

17 Jan '03

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Greetings, and thanks for your useful piece of software. I'm using ghc 5.04.2 which the web page warns may not work with hat. Even so, when I tried an older version, I had the same problem: the hat compilation was complaining about a missing IOExt module, so I added a '-package lang' to the makefile. Perhaps this won't work with nhc, but it solved one problem (more below). The next problem I had in compiling was that it didn't know about a certain data type, so I added an obvious "import" to the top of the file (more below). After having successfully built and installed hat, I tried to run it on my program and got a pattern match failure in the function "isIrrefutable" and so I fixed that bug which seems to be a typo. By the way, when I tried to build hat with nhc I ran out of stack space, but I wanted to use ghc anyway. The diffs for those three fixes (the first two of which may just be something about my compiler installation, but the third is certainly a bug) are below. After having spent some time getting hat to work, I can't use it on my program since hat does not yet support multi parameter type classes, so I thought I'd voice my opinion that supporting these type classes would be great :) peace, isaac diff -x'*.hi' -x'*.hx' -x'*lib*' -x'*script*' -u -r hat-2.00/src/compiler98/AuxFile.hs hat-2.00-altered/src/compiler98/AuxFile.hs - --- hat-2.00/src/compiler98/AuxFile.hs 2002-06-13 09:57:20.000000000 - -0400 +++ hat-2.00-altered/src/compiler98/AuxFile.hs 2003-01-16 15:44:47.000000000 -0500 @@ -440,7 +440,7 @@ and . (isNewTypeDataCon id :) . map isIrrefutableField $ fieldPats where isIrrefutableField (FieldExp _ _ pat) = isIrrefutable pat - - isIrrefutablePat _ = False + isIrrefutable _ = False isNewTypeDataCon id = case lookupAT identMap id of Just (Con Newtype _ _) -> True Only in hat-2.00-altered/src/compiler98: AuxFile.hs~ diff -x'*.hi' -x'*.hx' -x'*lib*' -x'*script*' -u -r hat-2.00/src/compiler98/Makefile hat-2.00-altered/src/compiler98/Makefile - --- hat-2.00/src/compiler98/Makefile 2002-06-07 12:13:21.000000000 - -0400 +++ hat-2.00-altered/src/compiler98/Makefile 2003-01-16 13:01:55.000000000 -0500 @@ -25,7 +25,7 @@ endif ifeq "ghc" "${HC}" IMPROVE = #-O - -HMAKEFLAGS := $(shell $(LOCAL)fixghc $(GHCSYM) +CTS -syslib exts - -CTS) $(IMPROVE) +HMAKEFLAGS := -package lang $(shell $(LOCAL)fixghc $(GHCSYM) +CTS - -syslib exts -CTS) $(IMPROVE) endif HMAKEFLAGS += $(shell echo $(BUILDOPTS)) diff -x'*.hi' -x'*.hx' -x'*lib*' -x'*script*' -u -r hat-2.00/src/hat/tools/LowLevel.hs hat-2.00-altered/src/hat/tools/LowLevel.hs - --- hat-2.00/src/hat/tools/LowLevel.hs 2002-06-13 11:50:30.000000000 - -0400 +++ hat-2.00-altered/src/hat/tools/LowLevel.hs 2003-01-16 12:54:10.000000000 -0500 @@ -47,6 +47,7 @@ ) where import FFIExtensions +import Addr -- Reference into the .hat file newtype FileNode = FileNode {int::Int} -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 <http://mailcrypt.sourceforge.net/> iD8DBQE+JyW4BLPTZ7K4MaIRAqFlAJ9xFhYhToQiUHSOjHZnRojp/WPR0QCfSO1l iGsc3+LlHPwUE6jv4wsbx3Q= =lOAY -----END PGP SIGNATURE-----

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Special report on technological development
by The Tech News 17 Jan '03

17 Jan '03

The Tech News, January 2003 Production Mini-plants in mobile containers. Co-investment Program "...Science Network will supply to countries and developing regions the technology and necessary support for production in series of Mini- plants in mobile containers (40-foot). The Mini-plant system is designed in such a way that all the production machinery is fixed on the platform of the container, with all wiring, piping, and installation parts; that is, they are fully equipped... and the mini-plant is ready for production." More than 700 portable production systems: Bakeries, Steel Nails, Welding Electrodes, Tire Retreading, Reinforcement Bar Bending for Construction Framework, Sheeting for Roofing, Ceilings and Façades, Plated Drums, Aluminum Buckets, Injected Polypropylene Housewares, Pressed Melamine Items (Glasses, Cups, Plates, Mugs, etc.), Mufflers, Construction Electrically Welded Mesh, Plastic Bags and Packaging, Mobile units of medical assistance, Sanitary Material, Hypodermic Syringes, Hemostatic Clamps, etc. Science Network has started a Co-investment program for the installation of small Assembly plants to manufacture in series the Mini-plants of portable production on site, region or country where required. One of the most relevant features is the fact that these plants will be connected to the World Trade System (WTS) with access to more than 50 million raw materials, products and services and automatic transactions for world trade. Due to financial reasons, involving cost and social impact, the best solution is setting up assembly plants on the same countries and regions, using local resources (labor, some equipment, etc.) Science Network participates at 50% (fifty percent) for investment of each Assembly plant. Request more information: <A HREF="mailto:letters@the-tech-news.com">Letters to the Editor</A> By Robert B. Lethe, Editor Mini-plantas de produccion en contenedores moviles. Programa de Co-inversion "...Science Network suministrara a paises y regiones en vias de desarrollo la tecnologia y el apoyo necesario para la fabricacion en serie de Mini-plantas de produccion en contenedores moviles (40-foot). El sistema de Mini-plantas esta diseñado de forma que todas las maquinas de produccion van instaladas fijas sobre la propia plataforma del contenedor, con el cableado, tuberias e instalaciones; es decir, completamente equipadas... y a partir de ese momento están listas para producir." Mas de 700 sistemas de produccion portatil: Panaderias, Producción de clavos de acero, Electrodos para soldadura, Recauchutado de neumaticos, Curvado de hierro para armaduras de construccion, Lamina perfilada para cubiertas, techos y cerramientos de fachada, Bidones de chapa, Cubos de aluminio, Menaje de polipropileno inyectado, Piezas de melamina prensada (vasos, platos, tazas, cafeteras, etc.) Silenciadores para vehiculos, Malla electrosoldada para la construccion, Bolsas y envases de plastico, Unidades moviles de asistencia medica, Material sanitario (jeringas hipodermicas, Pinzas hemostaticas, etc.) Science Network ha puesto en marcha un programa de Co-inversion para la instalacion de pequeñas Plantas ensambladoras para fabricar en serie las Mini-plantas de produccion portatil, en el lugar, region o pais que lo necesite. Una de las características relevantes es el hecho de que dichas plantas quedaran conectadas al Sistema del Comercio Mundial (WTS) con acceso a mas de 50 millones de mercancias, materia primas, productos, servicios y las operaciones automaticas de comercio internacional. Resulta obvio que por razones economicas, de costes y de impacto social, lo apropiado es instalar plantas ensambladoras en los mismos paises y regiones asi como utilizar los recursos locales (mano de obra, ciertos equipamientos, etc.) Science Network participa al 50% en la inversion de cada Planta ensambladora. Solicitar mas informacion: <A HREF="mailto:letters@the-tech-news.com">Letters to the Editor</A> Robert B. Lethe, Editor ------------------------------------------------------------------------- If you received this in error or would like to be removed from our list, please return us indicating: remove or un-subscribe in subject field, Thanks. <A HREF="mailto:editor@the-tech-news.com"> Editor</A> © 2002 The Tech News. All rights reserved.

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