September 2017 - Pharo-users

Usability issues with Calypso
by kmo Dec. 27, 2017

Dec. 27, 2017

I have been keen to use Calypso (I love the way it shows inherited methods) as my browser but I am finding some usability issues. It may be just me but some things I find off-putting. I don't really like the way that adding a new class is done by a new tab that appears now and then in the editing area. To my mind the Nautilus way of launching a dialog to create a class seems more natural - and opens the way in future for a class creation wizard - something that can't be done in a code window. If we have to do it in a code tab then it would be better if the tab remained there all the time - I don't like the way it appears and disappears. It takes a while to learn what to click to do this. Also, all class creation presumes a subclass of Object in Calypso. i miss the ability in Nautilus to select a class and immediately create a subclass of it. Am I missing something here? Is there a way? On the topic of my ignorance - what is a /project /in Calypso? How do you create one? And what does realize do? Also I think that the pop up menus could be subdivided into categories rather than present all the options in an unbroken list. And the order of options seems odd. To my mind/ senders /and /implementers /are two menu options that should always go together - not be separated by/ rename/ and /move to class side/ et cetera. Just my two cents. -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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OSProcess lock image
by Hilaire Dec. 12, 2017

Dec. 12, 2017

Hello, On Pharo4, when I type the command: OSProcess waitForCommand: 'ls' it locks the image, I can get back control with [Alt]-. With the same image and VM, this command was previously working, even called from a Seaside component. Any idea? Thanks Hilaire -- Dr. Geo http://drgeo.eu

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How to deploy headless app without changes and source files?
by Andreas Sunardi Nov. 19, 2017

Nov. 19, 2017

I found this StackOverflow question: https://stackoverflow.com/questions/14737695/is-it-possible-to-deploy-a-pha… and this older forum thread: https://www.mail-archive.com/pharo-project@lists.gforge.inria.fr/msg21170.h… I'm using Pharo5.0 and neither of these options is available anymore. What is the new way to do this? -- Andreas Sunardi

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X11 options on Ubuntu VM / Athens rendering problems
by J.F. Rick Nov. 18, 2017

Nov. 18, 2017

I'm running a fullscreen Pharo application on Ubuntu and I've noticed that Athens rendering gets way worse (maybe 10 updates per second) when I switch to fullscreen mode from inside Pharo. Ideally, I'd love for that to be fixed. In lieu of that, it would be cool if I could just maximize Pharo to the size of the screen to achieve good performance. Two things stop that: the Unity application bar and the title-bar. For the former, I can configure Unity to hide it. I noticed a '-notitle' X11 option when I execute pharo -help. I've tried using these X11 options and neither -notitle or -fullscreen seem to have any effect. Here's the command I run: ./bin/pharo --encoding utf8 -vm-display-X11 -fullscreen PATH_TO_IMAGE & Pharo starts fine but neither option seems to have any effect. I've also tried this in GNOME, thinking that Unity was the problem. Again, no effect. Any suggestions? Jeff

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Teapot and Websockets
by Georges Nov. 18, 2017

Nov. 18, 2017

Hello, Is it somehow possible to have a Teapot server running within there a WebsocketHandler (for instance ZnWebSocketChatroomHandler). Something like: Teapot on WS: '/ws-chatroom' -> [: aWebSocket | self registerWebSocket: aWebSocket ]; start. Or is this totally wrong? Georges -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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[ann] pillar text editor
by Tudor Girba Nov. 15, 2017

Nov. 15, 2017

Hi, Pillar now ships with a text editor that also features a syntax highlighter. So, now, if you load the development version of Pillar: Gofer new smalltalkhubUser: 'Pier' project: 'Pillar'; configuration; loadDevelopment. You will have an extra presentation when inspecting a .pillar file: The new thing here is that the highlighter is based on the Pillar PetitParser, and it is extensible for highlighting more parts if needed. The highlighting also can support actions. For example, the picture above shows the file to the right after clicking on the reference. Please take a look and let me know what you think. Cheers, Doru -- www.tudorgirba.com www.feenk.com "Things happen when they happen, not when you talk about them happening."

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including Pillar in Pharo image by default
by Peter Uhnak Nov. 10, 2017

Nov. 10, 2017

Hi, I would like to propose including Pillar in the Pharo image by default. My reasoning: Since we are moving to git, and most people will use github, gitlab, and the likes, it is expected to include a README.md file (or possibly more extensive documentation) alongside the code. Which means that people will (and are) writing the README mostly by hand, which of course is problematic, as e.g. code snippets can get deprecated, screenshots become outdated, etc. As Pillar tries to address these problems, it would make sense to me to include Pillar in the image by default, as anyone using git (which eventually should be everyone) will most likely benefit from writing their documentation in Pillar. Similarly using Pillar would open an avenue to provide the documentation in-image, e.g. one exporter for html/markdown, and another one for Pharo's Help system. I could, of course, install Pillar every time, but considering thats extra effort and in the extra time I can fix the issues by hand, I don't have such an incentive to use Pillar for this. Questions & Problems: I don't know by how much would pillar increase the image size. Perhaps there could be (a) "lightweight Pillar" (that would include just pillar & markdown exporter), or (b) we would have different images for different uses. By different images I mean something along the lines of a) developer image - meant to be directly used by developers to create their software b) production image - as a foundation for running systems / users Does this make sense? Peter

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How to make pharo find sqlite?
by Herby VojÄÃk Oct. 8, 2017

Oct. 8, 2017

Hello! I try to deploy UDBCSQLite-using image in a 32bit ubuntu 16.04.3. I do have libsqlite3: root@32bit-agent:~# find / -name '*libsqlite*' -type f 2>>/dev/null /usr/lib/i386-linux-gnu/libsqlite3.so.0.8.6 /var/lib/dpkg/info/libsqlite0.list /var/lib/dpkg/info/libsqlite3-0:i386.postinst /var/lib/dpkg/info/libsqlite3-0:i386.md5sums /var/lib/dpkg/info/libsqlite3-0:i386.shlibs /var/lib/dpkg/info/libsqlite0.postrm /var/lib/dpkg/info/libsqlite3-0:i386.symbols /var/lib/dpkg/info/libsqlite3-0:i386.list /var/lib/dpkg/info/libsqlite3-0:i386.triggers /var/cache/apt/archives/libsqlite0_2.8.17-12fakesync1_i386.deb but I get this in the output of the CI: 17:16:54.233 + ../pharo/pharo ./filmtower.image conf/run-tests.st 17:16:54.508 pthread_setschedparam failed: Operation not permitted 17:16:54.509 This VM uses a separate heartbeat thread to update its internal clock 17:16:54.509 and handle events. For best operation, this thread should run at a 17:16:54.509 higher priority, however the VM was unable to change the priority. The 17:16:54.509 effect is that heavily loaded systems may experience some latency 17:16:54.509 issues. If this occurs, please create the appropriate configuration 17:16:54.509 file in /etc/security/limits.d/ as shown below: 17:16:54.509 17:16:54.509 cat <<END | sudo tee /etc/security/limits.d/pharo.conf 17:16:54.509 * hard rtprio 2 17:16:54.509 * soft rtprio 2 17:16:54.509 END 17:16:54.509 17:16:54.509 and report to the pharo mailing list whether this improves behaviour. 17:16:54.512 17:16:54.512 You will need to log out and log back in for the limits to take effect. 17:16:54.512 For more information please see 17:16:54.512 https://github.com/OpenSmalltalk/opensmalltalk-vm/releases/tag/r3732#linux 17:16:54.785 17:16:54.786 TowergameSyncTests 17:16:54.831 Error: External module not found 17:16:54.832 ExternalLibraryFunction(Object)>>error: 17:16:54.832 ExternalLibraryFunction(Object)>>externalCallFailed 17:16:54.833 ExternalLibraryFunction(ExternalFunction)>>invokeWithArguments: 17:16:54.833 UDBCSQLite3DatabaseExternalObject class>>finalizeResourceData: 17:16:54.834 FFICalloutAPI>>function:module: 17:16:54.834 UDBCSQLite3Library(Object)>>ffiCall:module: 17:16:54.835 UDBCSQLite3DatabaseExternalObject class>>finalizeResourceData: 17:16:54.836 FFIExternalResourceExecutor>>finalize 17:16:54.836 WeakFinalizerItem>>finalizeValues 17:16:54.845 [ each finalizeValues ] in [ :each | [ each finalizeValues ] on: Exception fork: [ :ex | ex pass ] ] in WeakRegistry>>finalizeValues in Block: [ each finalizeValues ] 17:16:54.846 BlockClosure>>on:do: 17:16:54.852 [ Processor terminateActive ] in [ :ex | 17:16:54.852 | copy onDoCtx process handler bottom thisCtx | 17:16:54.852 onDoCtx := thisContext. 17:16:54.852 thisCtx := onDoCtx home. 17:16:54.852 17:16:54.852 "find the context on stack for which this method's is sender" 17:16:54.852 [ onDoCtx sender == thisCtx ] 17:16:54.852 whileFalse: [ onDoCtx := onDoCtx sender. 17:16:54.852 onDoCtx 17:16:54.852 ifNil: [ "Can't find our home context. seems like we're already forked 17:16:54.852 and handling another exception in new thread. In this case, just pass it through handler." ^ handlerAction cull: ex ] ]. 17:16:54.852 bottom := [ Processor terminateActive ] asContext. 17:16:54.853 onDoCtx privSender: bottom. 17:16:54.853 handler := [ handlerAction cull: ex ] asContext. 17:16:54.853 handler privSender: thisContext sender. 17:16:54.853 (Process forContext: handler priority: Processor activePriority) 17:16:54.853 resume. 17:16:54.853 17:16:54.853 "cut the stack of current process" 17:16:54.853 thisContext privSender: thisCtx. 17:16:54.853 nil ] in BlockClosure>>on:fork: in Block: [ Processor terminateActive ] 17:16:54.989 Look like pharo was not able to find the sqlite3 lib. Any help? Thanks, Herby

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Brea wiki software
by H. Hirzel Oct. 5, 2017

Oct. 5, 2017

On 8/23/17, Offray <offray.luna(a)mutabit.com> wrote: > Hi, > > On the Teapot + Mustache integration, Hannes, you may want to see my early > prototype: > > http://smalltalkhub.com/#!/~Offray/Brea > > At some point, it will contain distributed wiki, backed by Fossil, now that > we're thinking in empower community driven wiki like documentation. > > Offray Hi Offray I found Name: Brea-OffrayLuna.8 Author: OffrayLuna Time: 1 June 2017, 4:18:20.860411 pm There is no test to show me how to use it and I none of the class comments of the 4 classes gives enough clues. Interesting method so far routes "I define how the website behaves accordingly to particular routes." self server serveStatic: 'demo' from: '/opt/gig/'; GET: 'members/test' -> [ :req | BreaMember new renderTestUserAsHtml ]; GET: 'members/add' -> [ :req | BreaMember new htmlInput ]; POST: 'members/summit' -> [ :req | self processNewMember: req ] May I ask you to give a few hints how to start it? Is it possible to use it without Fossil, just with image persistence? Regards Hannes

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Pharo 7 license question
by Jimmie Houchin Oct. 4, 2017

Oct. 4, 2017

Hello, Pharo 7 to my understanding fundamentally changes Pharo. It is my understanding that Pharo 7 starts with a core Pharo kernel and like many languages out there, imports or adds code from a variety of external sources to the image being built. With that understanding, I am curious if that would allow for inclusion of a specific library/module to be licensed as GPL? And it not affect the other code in the composed image? I am a big believer in the MIT/BSD license and not a big fan of the GPL. However, there is software out there that I have avoided looking at the source code or attempting to port it to Pharo because it is GPL. I would sincerely love if I could now port such a library and license it under the GPL as required, and it not affect any other code outside of that specific library. I am not a lawyer. Nor do I know any lawyers. Is is possible for someone to get a reasonably definitive answer on this question? I am sure I am not the only one who has had this desire. I am also sure that I am not the only one who will have this question in the future. So it would be nice to have a proper legal response that could possibly be explicitly stated somewhere on the website or on an FAQ or something. Regardless of the answer, yes or no. It does need to be a settled issue for Pharo. That way someone could know if GPL/LGPL or whatever software could be in the catalog. Just wanted to put that out there to the community. I look forward to the answer, should one be or become available. Thanks. Jimmie

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