Re: [Haskell-cafe] [wxhaskell-users] wxHaskell + GHCi

Hi Conal, Does the EnableGui trick help? https://wiki.haskell.org/WxHaskell/Mac If so, I think the source should be put in the reps if not already Cheers, On Sun, 3 Jan 2016 at 08:45, Conal Elliott wrote:

Thanks for the pointer!

I was able to compile and run the sample program Resize.hs (“ghc –make Resize.hs”), but when I load that module into GHCi and run main, I get a run-time error:

*Main> main 2016-01-02 16:24:42.245 ghc[52790:1003] *** Assertion failure in +[NSUndoManager _endTopLevelGroupings], /SourceCache/Foundation/Foundation-1056.17/Misc.subproj/NSUndoManager.m:328 2016-01-02 16:24:42.245 ghc[52790:1003] +[NSUndoManager(NSInternal) _endTopLevelGroupings] is only safe to invoke on the main thread. 2016-01-02 16:24:42.246 ghc[52790:1003] ( 0 CoreFoundation 0x00007fff913b225c __exceptionPreprocess + 172 1 libobjc.A.dylib 0x00007fff93581e75 objc_exception_throw + 43 2 CoreFoundation 0x00007fff913b2038 +[NSException raise:format:arguments:] + 104 3 Foundation 0x00007fff90bb9361 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 189 4 Foundation 0x00007fff90b238ac +[NSUndoManager(NSPrivate) _endTopLevelGroupings] + 156 5 AppKit 0x00007fff914a7a23 -[NSApplication run] + 688 6 libwx_osx_cocoau_core-3.0.0.2.0.dylib 0x0000000113101ce3 _ZN5wxApp10CallOnInitEv + 143 7 libwx_baseu-3.0.0.2.0.dylib 0x00000001135eb396 _Z7wxEntryRiPPw + 47 8 libwxc.dylib 0x0000000115dfbd3c ELJApp_InitializeC + 124 9 libHSwxcore-0.92.2.0-14assQ7lWYy0vwBRqyjk7D-ghc7.10.3.dylib 0x0000000114e8a5cc cc2eh_info + 132 ) 2016-01-02 16:24:42.321 ghc[52790:1003] *** Assertion failure in +[NSUndoManager _endTopLevelGroupings], /SourceCache/Foundation/Foundation-1056.17/Misc.subproj/NSUndoManager.m:328 *Main>

A little googling found an issue: Crash when running a sample program in ghci on OSX https://github.com/bsl/GLFW-b/issues/53. One comment recommends the following in ghci:

:set -fno-ghci-sandbox

When I use this command in a fresh ghci process (not after a crash), the sample works. However, when I run “main” a second time, the window doesn’t appear. Instead, I get some sort of undead process (called “ghc”) that I have to kill manually.

I installed wxWidgets via “brew update && brew install wxWidgets” and wxHaskell via “cabal update && cabal install wx”. I’m running Mac OS 10.9.5.

Has anyone gotten this latest wxHaskell to play well with ghci on Mac OS?

-- Conal

On Sat, Jan 2, 2016 at 4:58 AM, Henk-Jan van Tuyl wrote:

...

I don't have a Mac OS computer available, I hope someone else will tell us. There are a lot of sample programs at https://github.com/wxHaskell/wxHaskell/tree/master/samples

Regards, Henk-Jan van Tuyl

On Sat, 02 Jan 2016 06:08:21 +0100, Conal Elliott wrote:

Fantastic news! Thanks for the update. Does wxHaskell work (non-fatally)

...

with GHCi on Mac OS also? Are there sample programs for an easy test run? -- Conal

On Fri, Jan 1, 2016 at 3:34 PM, Henk-Jan van Tuyl wrote:

...

L.S.,

For people who gave up on wxHaskell in the past, because wxHaskell didn't run (properly) in GHCi: I just found out, that wxHaskell programs run properly in GHCi on Windows, if you use the newest wxHaskell plus GHC 7.10.3 (both the 32 bit and the 64 bit version).

Regards, Henk-Jan van Tuyl

-- Folding@home What if you could share your unused computer power to help find a cure? In just 5 minutes you can join the world's biggest networked computer and get us closer sooner. Watch the video. http://folding.stanford.edu/

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

------------------------------------------------------------------------------ _______________________________________________ wxhaskell-users mailing list wxhaskell-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wxhaskell-users