A 07/04/2012, às 16:32, Henk-Jan van Tuyl escreveu:

On Sat, 07 Apr 2012 13:35:55 +0200, Miguel Negrao wrote:

...

So is it possible to tell reactive-banana-wx to use wxcore-0.13.1 instead of wxcore-0.12.1.7 ?

Try: cabal install reactive-banana-wx --constraint=wxcore==0.13.1

Regards, Henk-Jan van Tuyl

-- http://Van.Tuyl.eu/ http://members.chello.nl/hjgtuyl/tourdemonad.html Haskell programming --

Then I get: cabal install reactive-banana-wx --constraint=wxcore==0.13.1 Resolving dependencies... cabal: cannot configure reactive-banana-wx-0.5.0.0. It requires wxcore ==0.12.1.7 For the dependency on wxcore ==0.12.1.7 there are these packages: wxcore-0.12.1.7. However none of them are available. wxcore-0.12.1.7 was excluded because of the top level dependency wxcore ==0.13.1 best, Miguel Negrão

Hi Heinrich, A 08/04/2012, às 08:53, Heinrich Apfelmus escreveu:

Miguel Negrao wrote:

...

Then I get: cabal install reactive-banana-wx --constraint=wxcore==0.13.1 Resolving dependencies... cabal: cannot configure reactive-banana-wx-0.5.0.0. It requires wxcore ==0.12.1.7 For the dependency on wxcore ==0.12.1.7 there are these packages: wxcore-0.12.1.7. However none of them are available. wxcore-0.12.1.7 was excluded because of the top level dependency wxcore ==0.13.1

I have hardcoded the wxcore==0.12.1.7 constraint in the reactive-banana-wx package because I didn't take the time to fix my installation problems with the newer wx package yet.

You can override this by downloading the tarball from hackage and changing the dependency in reactive-banana-wx.cabal from

build-depends: wxcore == 0.12.2.7

to the version you desire. Same for the wx == .. constraint. Then, simply type

cabal install

to install from the *.cabal file in your current directory.

I did: cabal unpack reactive-banana-wx-0.5.0.0 cd reactive-banana-wx-0.5.0.0/ edited reactive-banana-wx.cabal cabal install Resolving dependencies... [1 of 1] Compiling Main ( Setup.hs, dist/setup/Main.o ) Linking ./dist/setup/setup ... ld: warning: could not create compact unwind for _ffi_call_unix64: does not use RBP or RSP based frame Configuring reactive-banana-wx-0.5.0.0... Preprocessing library reactive-banana-wx-0.5.0.0... Preprocessing executables for reactive-banana-wx-0.5.0.0... Building reactive-banana-wx-0.5.0.0... [1 of 1] Compiling Reactive.Banana.WX ( src/Reactive/Banana/WX.hs, dist/build/Reactive/Banana/WX.o ) [1 of 1] Compiling Reactive.Banana.WX ( src/Reactive/Banana/WX.hs, dist/build/Reactive/Banana/WX.p_o ) Registering reactive-banana-wx-0.5.0.0... Creating application bundle directory dist/build/Asteroids.app Copying executable Asteroids into place setup: dist/build/Asteroids/Asteroids: does not exist cabal: Error: some packages failed to install: reactive-banana-wx-0.5.0.0 failed during the building phase. The exception was: ExitFailure 1 best, Miguel Negão

A 08/04/2012, às 10:44, Heinrich Apfelmus escreveu:

Miguel Negrao wrote:

...

I did: cabal unpack reactive-banana-wx-0.5.0.0 cd reactive-banana-wx-0.5.0.0/ edited reactive-banana-wx.cabal cabal install Resolving dependencies... [1 of 1] Compiling Main ( Setup.hs, dist/setup/Main.o ) Linking ./dist/setup/setup ... ld: warning: could not create compact unwind for _ffi_call_unix64: does not use RBP or RSP based frame Configuring reactive-banana-wx-0.5.0.0... Preprocessing library reactive-banana-wx-0.5.0.0... Preprocessing executables for reactive-banana-wx-0.5.0.0... Building reactive-banana-wx-0.5.0.0... [1 of 1] Compiling Reactive.Banana.WX ( src/Reactive/Banana/WX.hs, dist/build/Reactive/Banana/WX.o ) [1 of 1] Compiling Reactive.Banana.WX ( src/Reactive/Banana/WX.hs, dist/build/Reactive/Banana/WX.p_o ) Registering reactive-banana-wx-0.5.0.0... Creating application bundle directory dist/build/Asteroids.app Copying executable Asteroids into place setup: dist/build/Asteroids/Asteroids: does not exist cabal: Error: some packages failed to install: reactive-banana-wx-0.5.0.0 failed during the building phase. The exception was: ExitFailure 1

Looks like it's an issue with the cabal-macosx package, which will be fixed soon. You probably also want to install the examples, so try

cabal install -fbuildExamples

instead. The buildExamples flag is also mentioned in the package description.

Ok, so that means there’s nothing to be done for now, I just have to wait ? Some other small questions, not directly related: I’m using leksah to edit code. How do I: - Browse the source of reactive-banana from leksah ? I would like to check for instance how the Applicative of Behaviour is implemented. - Is it possible to check the type of statements from the gui ? - Is it possible to pull up the documentation of a function directly from the gui ? - Is it possible to to the definition of a function, including the ones in other packages (like the ones of reactive-banana) directly from the gui ? thanks ! Miguel Negrão

Ok, by deleting all the examples I managed to install reactive-banana-wx. The Couter.hs example runs fine. I’m now trying to do a example where the value of a slider is posted to text box, but I can’t get it to work. event0 is for events that don’t ouput anything, but slider has a value.... what should I do ? {----------------------------------------------------------------------------- A slider and a text box ------------------------------------------------------------------------------} {-# LANGUAGE ScopedTypeVariables #-} -- allows "forall t. NetworkDescription t" import Graphics.UI.WX hiding (Event) import Reactive.Banana import Reactive.Banana.WX {----------------------------------------------------------------------------- Main ------------------------------------------------------------------------------} main:: IO() main = start $ do f <- frame [text := "A slider"] sl <- hslider f False 0 100 [] output <- staticText f [] set f [layout := margin 10 $ column 25 [widget sl, widget output]] let networkDescription :: forall t. NetworkDescription t () networkDescription = do esl <- event0 sl command let b = stepper 0 esl -- this doesn’t work off course... sink output [text :== show <$> b] network <- compile networkDescription actuate network thanks Miguel Negrão