August 2018 - Pharo-users - lists.pharo.org

EXIF / JPEG metadata
by Alistair Grant Nov. 30, 2025

Nov. 30, 2025

Hi Everyone, As far as I can tell, JPEGReadWriter in Pharo 7 doesn't read (or write) the image metadata, e.g. title, keywords, exposure time, etc. Is anyone aware of a package that does? Thanks! Alistair

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Re: [Pharo-users] Personal wiki / information manager
by Evan Donahue Sept. 25, 2023

Sept. 25, 2023

Seems that Pharo is a magnet for this kind of project. I've been writing one as well and using it to organize my research notes. Does anyone working on personal info mgmt tools want to talk offline? I expect we're running into some of the same issues, both conceptual and technical. Evan

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Pharo 6.0 and 6.1 64 bit freeze on MacMini
by Ted F.A.van Gaalen Jan. 27, 2020

Jan. 27, 2020

Hi, I reverted to 5.0 because Pharo 6.0 and 6.1 64 bit hangs on my Mac Mini with UDH 4K screen (may that has to do with?) with its maiden image (at first start after download when: I resize or go to full screen. Maybe VM problem? my mac Mini metrics: Hardware Overview: Model Name: Mac mini Model Identifier: Macmini6,2 Processor Name: Intel Core i7 Processor Speed: 2,6 GHz Number of Processors: 1 Total Number of Cores: 4 L2 Cache (per Core): 256 KB L3 Cache: 6 MB Memory: 4 GB Boot ROM Version: MM61.0106.B1F SMC Version (system): 2.8f0 maybe this problem was already reported, but could find it. Kind Regards TedvG

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Namespaces (was Re: Behold Pharo: The Modern Smalltalk)
by Ben Coman Dec. 24, 2019

Dec. 24, 2019

On Thu, Oct 12, 2017 at 8:52 PM, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > horrido wrote > > Having separate namespaces would be really good. > > VisualWorks has them. Why not Pharo? > > I can't remember ever hearing disagreement on this subject. It seems the > only questions have been: 1) how to do them *right*, The default position would be leveraging someone else's experience, so this begs the question, what is wrong in namespace implementations in VW, Gemstone, Squeak (as our immediate neighbours, then plus Dolphin, SmalltalkX, other languages) Are there been any research papers around comparing these? I found the "Pharo on Gemstone VM" talk impressive. The "develop on Pharo deploy on Gemstone" philosophy seems like a nice synergy for Pharo's commercial future. So a naive approach would be to do namespaces just like Gemstone. Maybe its not the best, but would it be "good enough" -- perfection being the enemy of done and all that jazz. cheers -ben > and 2) where they fall on the endless prioritized todo list >

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Microsoft COM
by Ben Coman Sept. 27, 2019

Sept. 27, 2019

Hi Pablo, At work I managed to remote control Internet Explorer with Excel VBA like this... [1] http://www.automateexcel.com/vba/automate-internet-explorer and went looking for how similar might be achieved from Pharo. IIUC I discovered this would be done via Microsoft's Component Object Model, and then I bumped into your repo... [2] https://github.com/tesonep/pharo-com Could you advise the status and your plans for this? Since I see its only a few months old I've probably stumbled onto it prematurely, but I see no documentation or tests to discover how to use it. So I'll curious whether it makes something like [1] possible? And could you show how that would be done? cheers -ben P.S. For context, at work I automated IE since the intranet document management system (OpenText) does authentication via a javascript function in the browser, which doesn't compute with Microsoft's MSXML.DOMDocument component. So I use IE to do the authentication and grab the raw XML from IE to then stuff it into MSXML.DOMDocument from which I pull the data I need. But I'd love to do it with Pharo instead (if I can get IT to white list it) cheers -ben

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ZnUrls with Non-ASCII characters
by Sean P. DeNigris March 23, 2019

March 23, 2019

'https://en.wiktionary.org/wiki/prÃªt#French' asUrl ==> ZnCharacterEncodingError: ASCII character expected. Ideas? ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Calypso question: adding a context menu item
by Juraj Kubelka March 16, 2019

March 16, 2019

Hi, To implement a context menu item. I have implemented a new class: -=-=-=- CmdCommand subclass: #ClyHelloCommand instanceVariableNames: '' classVariableNames: '' package: 'Calypso-Extensionsâ -=-=-=- with methods: -=-=-=-=- ClyHelloCommand class >> #systemBrowserMenuActivator <commandActivator> ^CmdContextMenuCommandActivator byRootGroupItemFor: ClyVariableSystemBrowserContext ClyHelloCommand >> # defaultMenuItemName ^'Say Helloâ ClyHelloCommand >> # execute self inform: 'Hello' -=-=-=-=- But it does not display in the context menu. I expect it next to âGenerate accessorsâ as I took this command as an example. What do I miss? Thanks, Juraj

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Aggregation framework in MongoTalk?
by phil＠highoctane.be Feb. 18, 2019

Feb. 18, 2019

Is there anyone using the aggregation framework of MongDb through MongoTalk? It uses the aggregate() command, so I was wondering if this could be supported out of the box or if there is a need for an additional Operation. TIA Phil

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Re: [Pharo-users] SQL Server
by linkerstorm Dec. 23, 2018

Dec. 23, 2018

Thanks. Following your suggestion, I found this thread, with the same problem : https://groups.google.com/forum/#!topic/dbxtalk/xoQILQhu_mo <https://groups.google.com/forum/#!topic/dbxtalk/xoQILQhu_mo> I'm not alone anymore -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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StCAD is open source
by askoh Dec. 15, 2018

Dec. 15, 2018

Hi: I have just open source StCAD (MIT license) which has the code for freeCAD. http://askoh.com/stcad Although written in VisualWorks Smalltalk, I hope Pharo users will port it in part or whole. All the best, Aik-Siong Koh What is 'StCAD'? 'StCAD' is a basic 3D CAD framework in Smalltalk (VisualWorks 8.x). It extends the GF/ST 2D drawing framework into 3D. It also include 'StCAD-Geo' which is the 3D geometric domain, 'StCAD-Math' which provides the mathematical support for 3D CAD and motion simulation computations, and 'StCAD-Doc' which is a simple word processor. 'StCAD-Math' is also suitable for engineering, scientific and business computing. The parcels are open source using MIT License. Users can use these parcels with other private software to create 3D applications like motion simulation, finite element analysis, CAD, scientific visualization, etc. 'StCAD' allows users to create and manipulate assemblies, which are collections of 3D parts. The parts are 3D solids, which can be connected by joints, constraints, contacts, actuators, springs, dampers or forces. The parts and connections define the structure or mechanism that the assembly is meant to represent. Animation is possible, if the user can provide time series of position and orientation data for the parts. Users can also obtain output data in the form of plots and tables. XY plots can be zoomed and set to equal scales. Data series available include linear and angular displacements, velocities, accelerations and other user generated data. 'StCAD' has been used to create a freeware called 'freeCAD' which is a 3D CAD with Motion Simulation. For more information visit: http://www.askoh.com -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Pharo7, consistent image freeze/deadlock on snapshotAndQuit
by Johan Brichau Oct. 7, 2018

Oct. 7, 2018

Hi, I ran into a freeze issue when trying to save and/or quit an image after loading Seaside3 and Zinc (not an infrequent combination :) The cause seems to be that terminating processes in a `shutDown` handler (called on image shutdown / snapshot) leads to a deadlock (somewhere). Both Comet and Zinc will send #terminate to a process when an image is quit or saved. If I disable one of those, the deadlock does not occur. I managed to reconstruct the issue with a simple example, attached. The attached Freeze class creates two processes (that loop with a Delay>>wait inside) in the `startUp` method (on image start). These processes are terminated by the shutdown method (called on image quit/save). However, when you try to quit and/or save the image, you will experience an image freeze. Iâm not familiar with the process scheduler, or anything else in this contextâ¦ so help would be appreciated while I try to dive further into it :) To reproduce: just file in the attached file in a Pharo7 image and try to quit. For reference, System Reporter output for my configuration. Any ideas? Cheers Johan Image ----- /Users/jbrichau/Pharo/images/Pharo 7.0 - 64bit (development version)/Pharo 7.0 - 64bit (development version).image Pharo7.0alpha Build information: Pharo-7.0+alpha.build.1131.sha.a46bfaef44ba209888c92fa0e3bd3a5e04a38c5d (64 Bit) Unnamed Virtual Machine --------------- /Users/jbrichau/Pharo/vms/70-x64/Pharo.app/Contents/MacOS/Pharo CoInterpreter VMMaker.oscog-eem.2401 uuid: 29232e0e-c9e3-41d8-ae75-519db862e02c Jun 28 2018 StackToRegisterMappingCogit VMMaker.oscog-eem.2401 uuid: 29232e0e-c9e3-41d8-ae75-519db862e02c Jun 28 2018 VM: 201806281256 https://github.com/OpenSmalltalk/opensmalltalk-vm.git Date: Thu Jun 28 14:56:30 2018 CommitHash: a8a1dc1 Plugins: 201806281256 https://github.com/OpenSmalltalk/opensmalltalk-vm.git Mac OS X built on Jun 28 2018 13:07:33 UTC Compiler: 4.2.1 Compatible Apple LLVM 7.3.0 (clang-703.0.31) VMMaker versionString VM: 201806281256 https://github.com/OpenSmalltalk/opensmalltalk-vm.git Date: Thu Jun 28 14:56:30 2018 CommitHash: a8a1dc1 Plugins: 201806281256 https://github.com/OpenSmalltalk/opensmalltalk-vm.git CoInterpreter VMMaker.oscog-eem.2401 uuid: 29232e0e-c9e3-41d8-ae75-519db862e02c Jun 28 2018 StackToRegisterMappingCogit VMMaker.oscog-eem.2401 uuid: 29232e0e-c9e3-41d8-ae75-519db862e02c Jun 28 2018

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Pharo 6 snap package
by Alistair Grant Sept. 20, 2018

Sept. 20, 2018

Hi Everyone, I've updated the Pharo 6 snap package for Ubuntu. The major advantages of using the snap package are: - No need to install all the 32 bit dependencies on a 64 bit system, they're all contained and isolated within the snap package. - Automagically distinguish between 32 bit and 64 bit images and run the appropriate VM (as with the ZeroConf package, the 64 bit VM still needs more testing). To get Pharo up and running on Ubuntu 16.04 or later: # Install Pharo $ sudo snap install --candidate pharo --classic # If your system isn't configured for threaded heartbeat: $ sudo pharo.config # Download the latest Pharo 6 image $ pharo.getimage # Go... $ pharo.ui Pharo.image # or: $ pharo Pharo.image eval 4+3 To get a list of available commands: $ snap info pharo If you're on Debian or Ubuntu 14.04 you'll need to install snapd, see https://snapcraft.io/docs/core/install The VM is the threaded heartbeat, dated 201705310241. The installation flags are: --candidate - The edge and beta channels are for development versions. It progresses to candidate and then stable. --classic - Snap packages are normally sandboxed for security reasons. Since Pharo is a development environment in which we want to be able to run any executable, or load any library, it is installed with access to the entire system (as the running user). Why use snap packages? - They include all dependencies. In particular, for the 32 bit versions, this means that it isn't necessary to install all the 32 bit architecture and associated dependencies. - Including dependencies means that there shouldn't be any problems with incompatible library versions when upgrading. Why not use snap packages? - It's a relatively new technology, with a number of rough edges. - There may still be issues with its sandboxing that I haven't discovered yet. - Because the package uses classic confinement, it isn't cross-distribution in practice (unfortunately). Please let me know of any other advantages or disadvantages you think should be listed here. If you don't trust me to configure your system correctly (which requires sudo): - All the scripts that make up the sub-commands are visible, e.g. pharo.config can be viewed at /snap/pharo/current/usr/bin/CONFIG The packaging code is at: https://github.com/akgrant43/pharo-snap Cheers, Alistair

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Retina support in Pharo
by markm Sept. 20, 2018

Sept. 20, 2018

Hi Is it possible to get Pharo (4 or 5) to run with retina support on OS X? I have tried searching for some answers, but alas could only find a handful of posts from a few years back. Any help much appreciated! Mark -- View this message in context: http://forum.world.st/Retina-support-in-Pharo-tp4895245.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

10 14

Yet another Pharo in docker
by Herby VojÄÃk Sept. 18, 2018

Sept. 18, 2018

https://hub.docker.com/r/herbysk/pharo/

8 16

Gemstone as a service?
by Andy Burnett Sept. 16, 2018

Sept. 16, 2018

Hello, I was wondering if anyone offers GaaS? I would love to be able to just focus on writing code, and leave the system management to others. Gemstone does seem to offer a very complete package. Also, does anyone know what's happening with Pharocloud? The site is still running, but it seems to be very quiet. Cheers Andy

4 5

Pharo and Docker (some steps)
by Torsten Bergmann Sept. 9, 2018

Sept. 9, 2018

For those interested in Docker: I recently played with Pharo and Docker and summarized some of my steps in a small tutorial in my Pharo wiki: http://wiki.astares.com/pharo/613 There is also a page following Mike Filonovs suggestions on the Pharo docker file: http://wiki.astares.com/pharo/615 Maybe this is useful for others too. Bye T.

3 2

Smalltalk Security Landscape - survey for ESUG 2018
by Jerry Kott Sept. 4, 2018

Sept. 4, 2018

Dear Smalltalkers and friends, I am planning to have a presentation titled âSmalltalk Security Landscapeâ at this yearâs ESUG conference. In my presentation I hope to increase cybersecurity awareness within the Smalltalk community and help shape the evolution of the language and its ecosystem. I have put together a survey to help me research the topic. I ask for your kind help to get a picture of where Smalltalk stands in the area of cybersecurity. The survey is completely anonymous, and should take less than 15 minutes to complete. I appreciate your time and participation. If you are in a management role, I would like your help by forwarding this to your team members to help reach the broad Smalltalk community. Here is a link: https://www.surveymonkey.com/r/esug2018 <https://www.surveymonkey.com/r/esug2018> Thank you for your help, and hope to see you in Cagliari! Jerry Kott This message has been digitally signed. PGP Fingerprint: A9181736DD2F1B6CC7CF9E51AC8514F48C0979A5

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Re: [Pharo-users] About describing the JupzterTalk installation process: Which Linux distribution are you using?
by Jesus Mari Aguirre Aug. 31, 2018

Aug. 31, 2018

Hi Mr.Hirzel about opening SVG, files, in fact you can open SVG as a morph using ( ASVGMorph fromFile: 'file.svg') but first you need to install XML parser from the catalog. I think there is a missing dependency. so you can do self display openInJupyter:(ASVGMorph fromFile: 'file.svg'). About nteract and jupytertalk, I mean you need to install jupyter if you want to use other kernels but node kernel so your plan about installing only nteract+jupyterTalk wonn't be factible. I already have JupyterTalk working on Pharo 32 bits(windows) but it is harder to install than Linux or Mac because you need to install zeromq 32 bits...it is not so complicated but you need to install an additional dependency. In a few days it will be available in JupyterTalk repository. El miÃ©., 29 ago. 2018 a las 19:38, H. Hirzel (<hannes.hirzel(a)gmail.com>) escribiÃ³: > About Windows ... do not worry, time will tell... > > At the moment I have it on Linux and that is fine. > > I am now more interested in actually USING it. > > See my question about giving back SVG graphics results > > > On 8/29/18, Jesus Mari Aguirre <jmariaguirre(a)gmail.com> wrote: > > I think Windows will not be possible by now, there's not Pharo 64 bits on > > windows...I don't know what version of zeroMQ uses nteract, I think there > > is a 32 bits version... > > I'll do my best but I can not guarantee to have JupyterTalk on Windows. > > > > > > El miÃ©., 29 ago. 2018 a las 6:30, H. Hirzel (<hannes.hirzel(a)gmail.com>) > > escribiÃ³: > > > >> Thank you for keeping me informed. > >> > >> I now manage to get Linux installations working, but the process is > >> still not consistent, see the installation log for Ubuntu 18.04 below. > >> > >> It could be that it is much easier for Windows, at the moment I only > >> have a 32bit Windows installation, so I cannot check. > >> > >> I'd like to focus now on _using_ the Pharo Smalltalk kernel, see > >> upcoming mail on the list. > >> > >> --Hannes > >> > >> ======================================== > >> > >> > >> New Ubuntu 18.04 installation > >> > >> sudo apt-get update > >> > >> sudo apt install python3-pip > >> > >> > >> pip3 install jupyter > >> > >> did not work the first time (network issues?) > >> > >> pip3 install jupyter > >> > >> sudo apt install jupyter-core > >> > >> sudo apt install jupyter-notebook > >> > >> > >> > >> > >> > >> > ================================================================================ > >> Installation log > >> > >> > ================================================================================ > >> > >> user9@Latitude2:~$ > >> > >> python3 --version > >> Python 3.6.5 > >> > >> > >> sudo apt-get update > >> > >> sudo apt install python3-pip > >> > >> user9@Latitude2:~$ sudo apt install python3-pip > >> [sudo] password for user9: > >> Reading package lists... Done > >> Building dependency tree > >> Reading state information... Done > >> The following additional packages will be installed: > >> build-essential dh-python dpkg-dev fakeroot g++ g++-7 gcc gcc-7 > >> libalgorithm-diff-perl libalgorithm-diff-xs-perl > >> libalgorithm-merge-perl > >> libasan4 libatomic1 libc-dev-bin libc6-dev libcilkrts5 libexpat1-dev > >> libfakeroot libgcc-7-dev libitm1 liblsan0 libmpx2 libpython3-dev > >> libpython3.6-dev libquadmath0 libstdc++-7-dev libtsan0 libubsan0 > >> linux-libc-dev make manpages-dev python-pip-whl python3-dev > >> python3-distutils python3-lib2to3 python3-setuptools python3-wheel > >> python3.6-dev > >> Suggested packages: > >> debian-keyring g++-multilib g++-7-multilib gcc-7-doc libstdc++6-7-dbg > >> gcc-multilib autoconf automake libtool flex bison gcc-doc > >> gcc-7-multilib > >> gcc-7-locales libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg > >> libasan4-dbg liblsan0-dbg libtsan0-dbg libubsan0-dbg libcilkrts5-dbg > >> libmpx2-dbg libquadmath0-dbg glibc-doc libstdc++-7-doc make-doc > >> python-setuptools-doc > >> The following NEW packages will be installed: > >> build-essential dh-python dpkg-dev fakeroot g++ g++-7 gcc gcc-7 > >> libalgorithm-diff-perl libalgorithm-diff-xs-perl > >> libalgorithm-merge-perl > >> libasan4 libatomic1 libc-dev-bin libc6-dev libcilkrts5 libexpat1-dev > >> libfakeroot libgcc-7-dev libitm1 liblsan0 libmpx2 libpython3-dev > >> libpython3.6-dev libquadmath0 libstdc++-7-dev libtsan0 libubsan0 > >> linux-libc-dev make manpages-dev python-pip-whl python3-dev > >> python3-distutils python3-lib2to3 python3-pip python3-setuptools > >> python3-wheel python3.6-dev > >> 0 upgraded, 39 newly installed, 0 to remove and 60 not upgraded. > >> Need to get 32.3 MB of archives. > >> After this operation, 141 MB of additional disk space will be used. > >> Do you want to continue? [Y/n] y > >> > >> > >> pip3 install jupyter > >> > >> > >> > >> Error > >> > >> > >> Downloading > >> > https://files.pythonhosted.org/packages/94/dd/fe6c4d683b09eb05342bd2816b777… > >> (89kB > >> < > https://files.pythonhosted.org/packages/94/dd/fe6c4d683b09eb05342bd2816b777… > > > >> ) > >> 22% |ââââââââ | 20kB 24kB/s eta > >> 0:00:03Exception: > >> Traceback (most recent call last): > >> File > >> > "/usr/share/python-wheels/urllib3-1.22-py2.py3-none-any.whl/urllib3/response.py", > >> line 302, in _error_catcher > >> yield > >> File > >> > "/usr/share/python-wheels/urllib3-1.22-py2.py3-none-any.whl/urllib3/response.py", > >> line 384, in read > >> > >> > >> REDO > >> > >> > >> pip3 install jupyter > >> > >> > >> But then > >> > >> jupyter > >> > >> Command 'jupyter' not found, but can be installed with: > >> > >> sudo apt install jupyter-core > >> > >> user9@Latitude2:~$ sudo apt install jupyter-core > >> [sudo] password for user9: > >> Reading package lists... Done > >> Building dependency tree > >> Reading state information... Done > >> The following additional packages will be installed: > >> python3-decorator python3-ipython-genutils python3-jupyter-core > >> python3-traitlets > >> The following NEW packages will be installed: > >> jupyter-core python3-decorator python3-ipython-genutils > >> python3-jupyter-core > >> python3-traitlets > >> 0 upgraded, 5 newly installed, 0 to remove and 60 not upgraded. > >> Need to get 132 kB of archives. > >> > >> > >> > >> > >> > >> jupyter --version > >> 4.4.0 > >> > >> > >> jupyter notebook > >> Error executing Jupyter command 'notebook': [Errno 2] No such file or > >> directory > >> user9@Latitude2:~$ Error executing Jupyter command 'notebook': [Errno > >> 2] No such file or directory > >> Error: command not found > >> user9@Latitude2:~$ > >> > >> > >> > >> > >> sudo apt install jupyter-notebook > >> Reading package lists... Done > >> Building dependency tree > >> Reading state information... Done > >> The following additional packages will be installed: > >> fonts-font-awesome fonts-mathjax javascript-common > >> jupyter-nbextension-jupyter-js-widgets libjs-backbone libjs-bootstrap > >> libjs-bootstrap-tour libjs-codemirror libjs-es6-promise libjs-jed > >> libjs-jquery > >> libjs-jquery-typeahead libjs-jquery-ui libjs-marked libjs-mathjax > >> libjs-moment > >> libjs-requirejs libjs-requirejs-text libjs-text-encoding > >> libjs-underscore libjs-xterm > >> liblua5.1-0 libluajit-5.1-2 libluajit-5.1-common pandoc pandoc-data > >> python3-bleach > >> python3-dateutil python3-entrypoints python3-html5lib > python3-ipykernel > >> python3-ipython python3-ipywidgets python3-jinja2 python3-jsonschema > >> python3-jupyter-client python3-mistune python3-nbconvert > >> python3-nbformat > >> python3-notebook python3-pandocfilters python3-pickleshare > >> python3-prompt-toolkit > >> python3-pygments python3-simplegeneric python3-terminado > >> python3-testpath > >> python3-tornado python3-wcwidth python3-webencodings python3-zmq > >> Suggested packages: > >> apache2 | lighttpd | httpd python-ipywidgets libjs-jquery-lazyload > >> libjs-json > >> libjs-jquery-ui-docs fonts-mathjax-extras fonts-stix libjs-mathjax-doc > >> texlive-latex-recommended texlive-xetex texlive-luatex pandoc-citeproc > >> texlive-latex-extra context wkhtmltopdf python-bleach-doc > >> python3-genshi python3-lxml > >> python-ipywidgets-doc python-jinja2-doc python-notebook-doc > >> ttf-bitstream-vera > >> python3-pycurl python-tornado-doc python3-twisted > >> The following NEW packages will be installed: > >> fonts-font-awesome fonts-mathjax javascript-common > >> jupyter-nbextension-jupyter-js-widgets jupyter-notebook libjs-backbone > >> libjs-bootstrap libjs-bootstrap-tour libjs-codemirror > >> libjs-es6-promise libjs-jed > >> libjs-jquery libjs-jquery-typeahead libjs-jquery-ui libjs-marked > >> libjs-mathjax > >> libjs-moment libjs-requirejs libjs-requirejs-text libjs-text-encoding > >> libjs-underscore libjs-xterm liblua5.1-0 libluajit-5.1-2 > >> libluajit-5.1-common pandoc > >> pandoc-data python3-bleach python3-dateutil python3-entrypoints > >> python3-html5lib > >> python3-ipykernel python3-ipython python3-ipywidgets python3-jinja2 > >> python3-jsonschema python3-jupyter-client python3-mistune > >> python3-nbconvert > >> python3-nbformat python3-notebook python3-pandocfilters > >> python3-pickleshare > >> python3-prompt-toolkit python3-pygments python3-simplegeneric > >> python3-terminado > >> python3-testpath python3-tornado python3-wcwidth > >> python3-webencodings python3-zmq > >> 0 upgraded, 52 newly installed, 0 to remove and 60 not upgraded. > >> Need to get 20.7 MB of archives. > >> After this operation, 142 MB of additional disk space will be used. > >> Do you want to continue? [Y/n] > >> > >> > >> > >> > >> Setting up libjs-bootstrap-tour (0.12.0+dfsg-1) ... > >> Setting up python3-notebook (5.2.2-1) ... > >> Setting up jupyter-nbextension-jupyter-js-widgets (6.0.0-2) ... > >> /usr/lib/python3.6/runpy.py:125: RuntimeWarning: > >> 'notebook.nbextensions' found in sys.modules after import of package > >> 'notebook', but prior to execution of 'notebook.nbextensions'; this > >> may result in unpredictable behaviour > >> warn(RuntimeWarning(msg)) > >> Enabling notebook extension jupyter-js-widgets/extension... > >> - Validating: OK > >> Setting up jupyter-notebook (5.2.2-1) ... > >> Setting up python3-ipywidgets (6.0.0-2) ... > >> Processing triggers for libc-bin (2.27-3ubuntu1) ... > >> > >> user9@Latitude2:~$ > >> > >> > >> > >> jupyter notebook > >> [I 05:23:54.607 NotebookApp] Writing notebook server cookie secret to > >> /run/user/1000/jupyter/notebook_cookie_secret > >> [I 05:23:55.398 NotebookApp] Serving notebooks from local directory: > >> /home/user9 > >> [I 05:23:55.398 NotebookApp] 0 active kernels > >> [I 05:23:55.398 NotebookApp] The Jupyter Notebook is running at: > >> [I 05:23:55.399 NotebookApp] > >> > >> > http://localhost:8888/?token=f3e847ae72b205b350efa0739bfc0c575a44a52c4e02aa… > >> [I 05:23:55.399 NotebookApp] Use Control-C to stop this server and > >> shut down all kernels (twice to skip confirmation). > >> [C 05:23:55.406 NotebookApp] > >> > >> Copy/paste this URL into your browser when you connect for the first > >> time, > >> to login with a token: > >> > >> > http://localhost:8888/?token=f3e847ae72b205b350efa0739bfc0c575a44a52c4e02aa… > >> [I 05:23:58.884 NotebookApp] Accepting one-time-token-authenticated > >> connection from 127.0.0.1 > >> [Parent 5668, Gecko_IOThread] WARNING: pipe error (59): Connection > >> reset by peer: file > >> > >> > /build/firefox-oscv9o/firefox-61.0.1+build1/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, > >> line 353 > >> > >> > >> > >> > >> > >> > >> > >> > >> On 8/27/18, Jesus Mari Aguirre <jmariaguirre(a)gmail.com> wrote: > >> > *a) https://www.nteract.io/ <https://www.nteract.io/>b) Pharo 6.1c) > >> > JuypterTalkd) kernel.json in /usr/local/share/jupyter/kernels/pharo * > >> > > >> > OK, I'll keep in mind in my instalation script. I'll keep you > informed. > >> > > >> > Regarding on Windows instalation, probably it won't be so hard, It was > >> very > >> > easy from Mac os X to Linux, I'm sure Windows will not be different. > >> > > >> > > >> > > >> > El lun., 27 ago. 2018 a las 13:46, H. Hirzel > >> > (<hannes.hirzel(a)gmail.com>) > >> > escribiÃ³: > >> > > >> >> Thank you for the installation sequence. Good that you will add an > >> >> installation script to your repository. If you label it as 'example > >> >> installation script it gives people a clue what is involved and saves > >> >> time. And they will know that it might not work in all cases or > >> >> different solutions are possible. > >> >> > >> >> Good to know how to get a python3.6 environment in Ubuntu 16.04. > >> >> > >> >> My current Ubuntu 16.04 based distribution has > >> >> > >> >> python3 --version > >> >> Python 3.5.2 > >> >> > >> >> > >> >> Just for trying I only did > >> >> > >> >> sudo add-apt-repository ppa:deadsnakes/ppa > >> >> pip3 install jupyter > >> >> > >> >> and then > >> >> > >> >> jupyter notebook > >> >> > >> >> works. > >> >> > >> >> But as you see from the mail to the list I am primarily interested in > >> >> getting an easy to use installation sequence and it seems that the > >> >> following > >> >> > >> >> a) https://www.nteract.io/ > >> >> b) Pharo 6.1 > >> >> c) JuypterTalk > >> >> d) kernel.json in /usr/local/share/jupyter/kernels/pharo > >> >> > >> >> should be sufficient. > >> >> > >> >> However at the moment I now have some working jupyter notebook > >> >> installations and I will start to work with them. In particular I am > >> >> interested in how to output html and svg contents from the Pharo > >> >> kernel. > >> >> > >> >> --Hannes > >> >> > >> >> > >> >> > >> >> > >> >> On 8/25/18, Jesus Mari Aguirre <jmariaguirre(a)gmail.com> wrote: > >> >> > sorry... I press ctrl+tab in google mail... as I was saying > >> >> > I did: > >> >> > > >> >> > sudo add-apt-repository ppa:deadsnakes/ppa > >> >> > sudo apt-get update > >> >> > sudo apt-get install python3.6 > >> >> > pip3 install jupyter > >> >> > > >> >> > I think this was the sequence of commands > >> >> > > >> >> > If you are going to use ipywidgets (still not supported by > >> JupyterTalk) > >> >> > pip3 install ipywidgets > >> >> > jupyter nbextension enable --py widgetsnbextension > >> >> > > >> >> > I'm preparing a bash script to make it easy, but jupyter is > >> >> > sometimes > >> a > >> >> > pain in the neck. > >> >> > > >> >> > > >> >> > > >> >> > > >> >> > > >> >> > > >> >> > El sÃ¡b., 25 ago. 2018 a las 21:07, Jesus Mari Aguirre (< > >> >> > jmariaguirre(a)gmail.com>) escribiÃ³: > >> >> > > >> >> >> I did: > >> >> >> sudo add-apt-repository ppa:deadsnakes/ppa > >> >> >> sudo apt-get update > >> >> >> sudo apt-get install python3.6 > >> >> >> pip3 install jupyter > >> >> >> > >> >> >> El sÃ¡b., 25 ago. 2018 a las 16:39, H. Hirzel (< > >> hannes.hirzel(a)gmail.com > >> >> >) > >> >> >> escribiÃ³: > >> >> >> > >> >> >>> Hello Jesus Mari > >> >> >>> > >> >> >>> On 8/25/18, Jesus Mari Aguirre <jmariaguirre(a)gmail.com> wrote: > >> >> >>> > I don't care about python version but Jupyter does. I think > last > >> >> >>> version of > >> >> >>> > Jupyter needs Python 3 and Pip3. > >> >> >>> > >> >> >>> Going for Python 3 is what I do in Ubuntu 16.04 and Ubuntu 18.04 > >> >> >>> > >> >> >>> The second approach on > >> >> >>> http://jupyter.org/install > >> >> >>> for "experienced" python users (I am not is) > >> >> >>> > >> >> >>> python3 -m pip install --upgrade pip > >> >> >>> > >> >> >>> This leaves me with an unusable pip3 > >> >> >>> > >> >> >>> pip3 --version > >> >> >>> Traceback (most recent call last): > >> >> >>> File "/usr/bin/pip3", line 9, in <module> > >> >> >>> from pip import main > >> >> >>> ImportError: cannot import name 'main' > >> >> >>> > >> >> >>> So I did not upgrade pip and directly did > >> >> >>> > >> >> >>> python3 -m pip install jupyter > >> >> >>> > >> >> >>> In one installation this morning this worked, in another one in > >> >> >>> the > >> >> >>> evening (network quality was not so good) it did not work even > >> >> >>> after > >> >> >>> several tries. (details below) > >> >> >>> > >> >> >>> > I installed everything on Ubuntu 14. > >> >> >>> Good to know that you can even have it in Ubuntu 14. > >> >> >>> I use Ubuntu 16.04 > >> >> >>> > >> >> >>> How did you install Juypter in Ubuntu 14.04? > >> >> >>> > >> >> >>> Could you please send me the result of > >> >> >>> > >> >> >>> history | grep 'install jupyter' > >> >> >>> > >> >> >>> > >> >> >>> - one installation was fine > >> >> >>> > >> >> >>> - the other gave an error message.[1] Jupyter did not install. > >> >> >>> It bothers me that I cannot repeat the process easily. In the > end > >> >> >>> something like a snap package which contains everything the > >> necessary > >> >> >>> jupyter files and Pharo6.1 with JupyterTalk installed might be > the > >> >> >>> way > >> >> >>> to go for installing it on different systems. > >> >> >>> > >> >> >>> > >> >> >>> > I'm very surprised you don't need to create the kernel.json > >> >> >>> > file, > >> I > >> >> >>> > can > >> >> >>> not > >> >> >>> > explain how does Jupyter starts Pharo without the path and arts > >> >> >>> > to > >> >> the > >> >> >>> > Pharo VM... > >> >> >>> > >> >> >>> That was in a third Ubuntu setup. It is probably caused by the > >> >> >>> installation sequence. I'll have to check again. > >> >> >>> > >> >> >>> That is in Ubuntu 18.04 and I used > >> >> >>> > >> >> >>> sudo apt-get install jupyter-core > >> >> >>> sudo apt-get install jupyter-notebook > >> >> >>> > >> >> >>> Seems to be in the repository, but it was not sufficient. > >> >> >>> > >> >> >>> This is why I like the *nteract* approach. One download which > >> >> >>> includes > >> >> >>> everything. > >> >> >>> > >> >> >>> Webbrowser with notebook, node kernel. > >> >> >>> > >> >> >>> --Hannes > >> >> >>> > >> >> >>> > El sÃ¡b., 25 ago. 2018 6:53, H. Hirzel <hannes.hirzel(a)gmail.com > > > >> >> >>> escribiÃ³: > >> >> >>> > > >> >> >>> >> Hello Jesus Mari > >> >> >>> >> > >> >> >>> >> For my JupyterTalk installation tests I have been using Ubuntu > >> >> >>> >> 18.04.1 > >> >> >>> so > >> >> >>> >> far. > >> >> >>> >> Python 3. > >> >> >>> >> > >> >> >>> >> My production environment is 16.04. So I still need to do the > >> >> >>> >> installation there. > >> >> >>> >> > >> >> >>> >> Is your python environment version 2 or 3? > >> >> >>> >> > >> >> >>> >> Regards > >> >> >>> >> Hannes > >> >> >>> >> > >> >> >>> > > >> >> >>> --------------------------- > >> >> >>> > >> >> >>> [1] > >> >> >>> user26@Latitude-E64102:~$ pip3 install jupyter > >> >> >>> Collecting jupyter > >> >> >>> Using cached > >> >> >>> > >> >> > >> > https://files.pythonhosted.org/packages/83/df/0f5dd132200728a86190397e1ea87… > >> >> >>> Collecting nbconvert (from jupyter) > >> >> >>> Using cached > >> >> >>> > >> >> > >> > https://files.pythonhosted.org/packages/39/ea/280d6c0d92f8e3ca15fd798bbcc2e… > >> >> >>> Collecting ipykernel (from jupyter) > >> >> >>> Using cached > >> >> >>> > >> >> > >> > https://files.pythonhosted.org/packages/ab/3f/cd624c835aa3336a9110d0a99e150… > >> >> >>> Collecting ipywidgets (from jupyter) > >> >> >>> Using cached > >> >> >>> > >> >> > >> > https://files.pythonhosted.org/packages/34/3a/5b258ea6d584f5a8527c2295d0ebf… > >> >> >>> Collecting notebook (from jupyter) > >> >> >>> Downloading > >> >> >>> > >> >> > >> > https://files.pythonhosted.org/packages/5e/7c/7fd8e9584779d65dfcad9fa2e09c7… > >> >> >>> (8.9MB) > >> >> >>> 52% |âââââââââââââââââ | 4.7MB 50kB/s eta > >> >> >>> 0:01:22Exception: > >> >> >>> Traceback (most recent call last): > >> >> >>> File > >> >> >>> > >> >> > >> > "/usr/share/python-wheels/urllib3-1.13.1-py2.py3-none-any.whl/urllib3/response.py", > >> >> >>> line 226, in _error_catcher > >> >> >>> yield > >> >> >>> File > >> >> >>> > >> >> > >> > "/usr/share/python-wheels/urllib3-1.13.1-py2.py3-none-any.whl/urllib3/response.py", > >> >> >>> line 301, in read > >> >> >>> data = self._fp.read(amt) > >> >> >>> File > >> >> >>> > >> >> > >> > "/usr/share/python-wheels/CacheControl-0.11.5-py2.py3-none-any.whl/cachecontrol/filewrapper.py", > >> >> >>> line 49, in read > >> >> >>> data = self.__fp.read(amt) > >> >> >>> File "/usr/lib/python3.5/http/client.py", line 448, in read > >> >> >>> n = self.readinto(b) > >> >> >>> File "/usr/lib/python3.5/http/client.py", line 488, in readinto > >> >> >>> n = self.fp.readinto(b) > >> >> >>> File "/usr/lib/python3.5/socket.py", line 575, in readinto > >> >> >>> return self._sock.recv_into(b) > >> >> >>> File "/usr/lib/python3.5/ssl.py", line 929, in recv_into > >> >> >>> return self.read(nbytes, buffer) > >> >> >>> File "/usr/lib/python3.5/ssl.py", line 791, in read > >> >> >>> return self._sslobj.read(len, buffer) > >> >> >>> File "/usr/lib/python3.5/ssl.py", line 575, in read > >> >> >>> v = self._sslobj.read(len, buffer) > >> >> >>> socket.timeout: The read operation timed out > >> >> >>> > >> >> >>> During handling of the above exception, another exception > >> >> >>> occurred: > >> >> >>> > >> >> >>> Traceback (most recent call last): > >> >> >>> File "/usr/lib/python3/dist-packages/pip/basecommand.py", line > >> 209, > >> >> in > >> >> >>> main > >> >> >>> status = self.run(options, args) > >> >> >>> File "/usr/lib/python3/dist-packages/pip/commands/install.py", > >> line > >> >> >>> 328, in run > >> >> >>> wb.build(autobuilding=True) > >> >> >>> File "/usr/lib/python3/dist-packages/pip/wheel.py", line 748, > in > >> >> build > >> >> >>> .... > >> >> >>> 231, in _error_catcher > >> >> >>> raise ReadTimeoutError(self._pool, None, 'Read timed out.') > >> >> >>> requests.packages.urllib3.exceptions.ReadTimeoutError: > >> >> >>> HTTPSConnectionPool(host='files.pythonhosted.org', port=443): > Read > >> >> >>> timed out. > >> >> >>> You are using pip version 8.1.1, however version 18.0 is > >> >> >>> available. > >> >> >>> You should consider upgrading via the 'pip install --upgrade pip' > >> >> >>> command. > >> >> >>> > >> >> >> > >> >> > > >> >> > >> > > >> > > >

1 0

Making TDD in pharo work properly (aka - walkback on a missing class is nasty)
by Tim Mackinnon Aug. 31, 2018

Aug. 31, 2018

Hi guys - Iâve been hammering on the exercism project to get pharo shining over thereâ¦ its been a good side distraction (there is lots of energy in that community to) and its made me really push my use of Iceberg & git as well as learn some fo the newish file reference stuff (still getting good at that - but like the approach), Anyway - Iâve got an Alpha working, and users can pull down a zero conf pharo image and eval a little script that will get them up and running (which is pretty slick). So the story then goes - Exercism is trying to simulate TDD and help you learn a new language (aka Pharo or Go or Python etc). To this end, theyâve got an active community building up little test exercises with suites of tests that new users can run to help them learn the syntax/essence of the language track theyâve signed up to. You run the tests, develop your solution and then submit it to a community to get feedback and then progress. Pretty standard - we can play in this pond too - and it turns out that Tonel actually makes it pretty easy to submit readable solutions that will fit on their website. YAY. The trouble is - when you pull down a new exercise - I use the TonelReader to pull the code into your image - and I thought it would be cute to just pull in the TestCase so that users can simulate the full TDD cycle - where you can create things in the debuggerâ¦ this is where it all began right? So you hit a clanger when you do this - and in a way its a bit of a legacy thing weâve carried around (and possibly should fix better). When Tonel reads in the TesCase, it normally will reference a class this isnât there (Iâve deliberately left the solution out). It does the right thing and put a nil placeholder in the code so that it can read it in. HOWEVER - when you run your test and hit that nil class placeholder we do a very bad job of dealing with this in the debugger. And if you think about it - we also do a bad job when typing in code too - we essentially insist that declare a class then and there - unlike a selector which can happily be late bound. So back to my TDD example - user gets a debugger with a nil class error - the create button is actually not helpful for you as it only creates methods. So our âlive in the debuggerâ mantra is a bit less obvious here. What you had to do is make a change to the source (like a space) so that you can reserve the method - which then causes you to get the âcreate class promptâ. So we have the ability - just donât expose it very well - however now you have a missing method - but again its not so obvious that you have to resume your debugger (it hasnât resumed when you created the class) - and then you will get another error for the missing method that the create button will now resolve. This feels very clunky to me - and makes me feel like Iâm mis-selling smalltalk where we have a bullet point about âAmazing for debuggingâ¦â. This feels fixable though right? Iâm wondering about thoughts though before jumping inâ¦ Tim p.s. - weâre building some exercises for exercism and getting that process streamlined so hopefully many more people can help - and maybe we can augment the great learning courses/videos/books that we already have.

5 30

Loading a dll usinf UFFI on Win32
by JesÃºs MarÃ Aug. 30, 2018

Aug. 30, 2018

I'm trying to make zeromq work on win 32. zeromq lib is in C:\Program Files (x86)\ZeroMQ 4.0.4\bin\libzmq-v100-mt-4_0_4.dll . My Api #win32ModuleName returns exactly 'C:\Program Files (x86)\ZeroMQ 4.0.4\bin\libzmq-v100-mt-4_0_4.dll' but when I try lo execute any call it returns "module not found" error. Any suggestion? -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

2 2

When we create a missing method in debugger - why does it end with a dot?
by Tim Mackinnon Aug. 30, 2018

Aug. 30, 2018

I am looking at porting my missing class creation code into Pharo 7, and I notice there is a DynamicMessageImplementor that does this for methods - but Iâm wondering why when we create a missing method with âself souldBeImplemented.â with a trailing â.â? The Smalltalk style guide normally says the last statement shouldnât have a dot - and I notice some recent cleanups removed some dots on methods (presumably the formatter). This is a bit of a special case as the intent is to replace that method - but shouldnât we create without the dot to set a good example anyway? If so, I can include that change in my pr. Tim

3 2

Latest Pharo 7 image doesn't give normal debugger on a method with undefined class method - get System Error
by Tim Mackinnon Aug. 30, 2018

Aug. 30, 2018

I was going to look at testing my Create class in the debugger fixes however the latest image behaves in a manner Iâve not seen before. In a fresh P7 image - build 1198 64bit osx (with latest vm downloaded by launcher) - I have created a new class in a new package TimTest:TimTest>>testMethod "self new testMethod" FooObject new someMethod Where FooObject and someMethod are undefined and when I saved the method I left them as undefined. I then evaluated - TimeTest new testMethod in a playground and I get a white screen with *** System error handling failed *** (screenshot below) In an earlier image (build 1167) this wasnât the case? Has something been broken? Tim

1 1

Tracing Method Calls
by Arturo Zambrano Aug. 29, 2018

Aug. 29, 2018

Hi all, I have a piece of undocumented software that I need understand ... One thing I would like to do is to have a complete trace of method calls (receivers, parameters) for certain scenarios. As an "aspects"guy, my first idea was to use Phantom, but it seems not active anymore. Could someone please point me to some tools that I could use for this? (using Pharo 6, 6.1 or 7) Thanks in advance Cheers Arturo

3 4

Jupyter notebooks / Dynabook / JupyterTalk
by H. Hirzel Aug. 29, 2018

Aug. 29, 2018

Hello What is the status of this project? https://github.com/jmari/JupyterTalk Hannes

9 48

ssh client for Pharo
by Andrei Stebakov Aug. 29, 2018

Aug. 29, 2018

Is there an ssh client for Pharo just like net-ssh for Ruby? Thanks!

2 3