January 2023 - 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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The System Browser has recently started showing 2 comments tabs - one is text and one is formatted pretty. That seems odd and is not wanted - has anyone else seen this? Pharo 10 stable image - windows 64 - all reloaded recently...
by mark.odonoghue.2010＠gmail.com May 12, 2024

May 12, 2024

![Image](https://media.discordapp.net/attachments/223421264751099906/1060833258427920385/image.png)

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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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GSUG -- German Smalltalk User Group : die deutschsprachige Smalltalk-Anwendergemeinde trifft sich jetzt auf LinkedIn
by Nowak, Helge Jan. 30, 2023

Jan. 30, 2023

Hallo Smalltalker! Die weltweite deutschsprachige Smalltalk-Anwendergemeinde hat einen neuen Treffpunkt: die GSUG-Gruppe auf LinkedIn: https://www.linkedin.com/groups/12754122/ Hier wollen wir uns zu allen Themen rund um Smalltalk austauschen: Technologien, Produkte und Projekte vorstellen und diskutieren, Stellenangebote und -gesuche bekanntmachen, und was uns sonst noch zu unserer Lieblingsumgebung bewegt. Die Gruppe ist dialektneutral und offen fÃ¼r Erweiterungen im Geiste von Smalltalk, wie Self, Strongtalk oder Newspeak. Wir sind schon gespannt auf die nÃ¤chsten innovativen Ideen! Wir freuen uns auf Euch! Anmelden und Weitersagen ð Smalltalk ist anders - und das ist gut so! Helge Nowak

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This week (4/2023) on the Pharo Issue Tracker
by Marcus Denker Jan. 27, 2023

Jan. 27, 2023

This week, we merged 28 Pull requests, fixing 31 issues Fixes ===== - Update BaselineOfPharo with Roassal3 version v0.9.9L #12430 https://github.com/pharo-project/pharo/pull/12430 - checkIfMustRefresh in OmBlockFileStore>>blockForLocalNameAsInteger: #12197 https://github.com/pharo-project/pharo/pull/12197 - Fix for multiple Epicea issues #12375 https://github.com/pharo-project/pharo/pull/12375 - FIX CI issues - FFIExternalString>>#basicHandle:at: calls deprecated message #12405 https://github.com/pharo-project/pharo/pull/12405 - Fix for "Browse this version in Calypso" Error after clicking an unloaded package #12423 https://github.com/pharo-project/pharo/pull/12423 - 12410-Minimal-Image-does-not-open-ChangesFile-correctly #12411 https://github.com/pharo-project/pharo/pull/12411 - fix testTallyInstructions #12393 https://github.com/pharo-project/pharo/pull/12393 - Spotter is broken> DNU #tools #12397 https://github.com/pharo-project/pharo/pull/12397 Cleanups ======== - RubScrolledTextMorph>>#mouseWheel: sends unimplemented message #scrolâ¦ #12402 https://github.com/pharo-project/pharo/pull/12402 - 12416-Fixing-Classes-Reported-by-NoUnusedVariablesLeftTest #12417 https://github.com/pharo-project/pharo/pull/12417 - 12413-Improving-the-dependency-of-Formatter-Settings-with-EFFormatter #12414 https://github.com/pharo-project/pharo/pull/12414 - Move #asNumber from AST-Core to Kernel (where it is also already tested) #12388 https://github.com/pharo-project/pharo/pull/12388 - extract return from ifTrue:ifFalse: in Integer>>#printStringRadix: #12433 https://github.com/pharo-project/pharo/pull/12433 - 11x Cleanups of the kind Cleanup: Condense Calypso packages #12284 https://github.com/pharo-project/pharo/pull/12284 this Changelog is archived at https://github.com/pharo-project/pharo-changelogs/blob/master/weekly/2023/4…

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Sacrilegeous question : what are compelling use cases for Pharo
by mayuresh＠kathe.in Jan. 26, 2023

Jan. 26, 2023

Hello, This isn't a mail intended to troll this community. I am genuinely curious about what would be the type of use cases which would be exemplary for Pharo? Now-a-days, anything one could have accomplished solely with Smalltalk (and hence Pharo) can be accomplished with a number of modern programming languages and their associated frameworks, e.g. Google's Dart with Flutter, Apple Swift with SwiftUI, Microsoft's C# with WinUI. And such languages and their associated frameworks are built from the ground-up for a particular platform, while Pharo does not have any such targets, which usually renders graphical applications built using Pharo to "look like" aliens. What does stand-out regarding Smalltalk (and hence Pharo) is the superior developer experience furnished as a result of the true object system combined with a full graphical environment. In addition to that, Pharo, specifically, provides advanced tools like Git integration, etc. But, are these things all that there are to be considered enough for highlighting the full inherent power of Pharo? Again, apologies if anyone found the subject line as well as the message body to be troll-ish. That has not been the intent. Kind regards, ~Mayuresh

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Squeak By Example 5.3 book
by danhunfeldz＠mail.com Jan. 22, 2023

Jan. 22, 2023

There is a new edition of Squeak by Example which is now 5.3. Amazon is selling only the old edition from 2011. Can I upload the SBE 5.3 edition PDF to lulu.com and have it printed as a bound book?

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[ANN] Pharo Mastodon
by Marcus Denker Jan. 20, 2023

Jan. 20, 2023

Yes, not really news: Since Jan 4, 2018 we have a mastodon account. Esteban created that very early on, for now it re-shares the @pharoproject twitter account. https://mastodon.social/@pharoproject <https://mastodon.social/@pharoproject> I have finally updated https://www.pharo.org/community to link to it. Marcus

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Removing Calypso rule critiques
by Sebastian Jordan Montano Jan. 18, 2023

Jan. 18, 2023

Hello everyone, I would like to hide/remove all Calypso rules. I tried in Settings > Code Browsing > Calypso Browser > "Show critiques method" group but it does not work. When you are new in Pharo they are ok because they help you learn Pharo. But after a time they only bother and occupy space. Does anyone know how to make Calypso not show them ? thanks, Sebastian Jordan

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How do I unsubscribe?
by Hedley Finger Jan. 18, 2023

Jan. 18, 2023

I can't find any info at the Affinity list-server about unsubscribing from this list. Presumably there is a special address but I can't think what command to add after pharo-users-???. TIA. Hedley Finger hedley.finger(a)gmail.com

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UK Smalltalk User Group Meeting - 25th January 2023
by Giovanni Corriga Jan. 16, 2023

Jan. 16, 2023

For the first UKSTUG online meeting of the year, StÃ©phane Rollandin will talk to us about muO: musical objects for Squeak ( http://www.zogotounga.net/comp/squeak/sqgeo.htm ). The presentation will focus on some of the interactive tools and subsystems widely used in muO, that are of interest in their own right, and potentially useful to others. The main emphasis will be on the large family of zoomable fields, which are modular plotting editors. StÃ©phane will demonstrate the workflow they are designed for, and show in what sense it is a seamless and natural exploitation of the Morphic framework. The code for these tools is somewhat entangled with the muO package, so StÃ©phane will also provide a Squeak image taylored to help people find their way there. StÃ©phane Rollandin has been doing independent research on software for musical composition and representation for the last 20 years, during his whole careeer as a stay-at-home father. After developing the GeoMaestro system for KeyKit, and the Csound-x package for Emacs, he was introduced to Smalltalk and never looked back. Besides muO, he developed for Squeak a modular Lisp interpreter, the LambdaMessageSend framework and a few games. He is now working on an experimental game engine with an emphasis on procedural generation and complex autonomous agents. He was formally educated in physics, and his other artistic ventures are in photography and aikido. His music is freely available online ( https://stephanerollandin.bandcamp.com/ ). Born in Marseille, he currently lives in the southern French Alps. This will be an online meeting from home. If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/ukstug/events/290746320/ ) to receive the meeting details.

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New to Pharo: Some questions
by Juan Cruz Jan. 16, 2023

Jan. 16, 2023

Hello, I hope everyone is doing well. I am new to Pharo but not to programming. I have a background in Python, and Javascript mostly. I mostly use Python due to the data, plotting, and math libraries. But after toying a little with Pharo, the language I came to appreciate its beauty of it and how expressive the language is. I was wondering if there are libraries equivalent to Matplotlib, Pandas, Numpy, etc. I mostly apply Python to finance -in particular to quantitative finance. I read somewhere that top investment banks use Smalltalk as their secret weapon, so I'm sure that there are some users that have some insights to share on this subject. Thanks to all and all the best for this 2023. Greetings Juan P. Cruz

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Creating tiny Pharo images
by erik.stel＠gmail.com Jan. 15, 2023

Jan. 15, 2023

Hi all.\ \ I have created a bootstrap helper package to create tiny Pharo images. I use this for CodeParadise, but it can also be used to create tiny images which run outside the browser. It can create both 32 and 64 bit images. A tiny image is around 200 to 300Kb.\ \ Two example usages are present. See the README in the repo.\ \ [https://github.com/ErikOnBike/TinyBootstrap](https://github.com/ErikOnBike/… "https://github.com/ErikOnBike/TinyBootstrap")\ \ Happy 2023 and happy Smalltalking!

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Causal profiling
by mayuresh＠kathe.in Jan. 15, 2023

Jan. 15, 2023

People here might have heard about the work of Prof Emery Berger on the causal profiling technology. Here's a paper presenting Coz, a causal profiler. https://www.sigops.org/s/conferences/sosp/2015/current/2015-Monterey/printa… They have also release a profiler for Python using the same technology. It is called Scalene: https://github.com/plasma-umass/scalene In case Pharo does not have such a profiler, maybe an expert could work on it? Best, ~Mayuresh

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CfP: Journal of Systems and Software - Special Issue on Software Language Engineering
by Andrei Chis Jan. 13, 2023

Jan. 13, 2023

Dear Colleagues, We invite submissions for the Journal of Systems and Software Special Issue on Â«Software Language EngineeringÂ». This special issue is related to the 2022 edition of the Software Language Engineering Conference (https://2022.splashcon.org/home/sle-2022?) but **it is open to all authors.** Details follow. -------------------------------------------------------------------------------------- Journal of Systems and Software Software Language Engineering Special Issue Guest Editors â Lola BurgueÃ±o, University of Malaga, Spain â Walter Cazzola, Professor, UniversitÃ degli Studi di Milano, Italy â Dimitris Kolovos, Professor, University of York, United Kingdom Special issue information: With the ubiquity of computers, software has become the dominating intellectual asset of our time. In turn, this software depends on software languages, namely the languages it is written in, the languages used to describe its environment, and the languages driving its development process. Given that everything depends on software and that software depends on software languages, it seems fair to say that for many years to come, everything will depend on software languages. Software language engineering (SLE) is the discipline of engineering languages and their tools required for the creation of software. It abstracts from the differences between programming languages, modeling languages, and other software languages, and emphasizes the engineering facet of the creation of such languages, that is, the establishment of the scientific methods and practices that enable the best results. While SLE is certainly driven by its meta-circular character (software languages are engineered using software languages), SLE is not self-satisfying: its scope extends to the engineering of languages for all and everything. This special issue will represent a further step in identification, definition and tooling of software languages. Topics of interest related to the special issue, but are not limited to: â Software Language Design and Implementation â Approaches to and methods for language design â Static semantics (e.g. design rules, well-formedness constraints) â Techniques for specifying behavioral / executable semantics â Generative approaches (incl. code synthesis, compilation) â Meta-languages, meta-tools, language workbenches â Software Language Validation â Verification and formal methods for languages â Testing techniques for languages â Simulation techniques for languages â Software Language Integration and Composition â Coordination of heterogeneous languages and tools â Mappings between languages (incl. transformation languages) â Traceability between languages â Deployment of languages to different platforms â Software Language Maintenance â Software language reuse â Language evolution â Language families and variability, language and software product lines â Domain-specific approaches for any aspects of SLE (design, implementation, validation, maintenance) â Empirical evaluation and experience reports of language engineering tools â User studies evaluating usability â Performance benchmarks â Industrial applications â Synergies between Language Engineering and emerging/promising research areas â AI and ML language engineering (e.g., ML compiler testing, code classification) â Quantum language engineering (e.g., language design for quantum machines) â Language engineering for physical systems (e.g., CPS, IoT, digital twins) â Socio-technical systems and language engineering (e.g., language evolution to adapt to social requirements) Manuscript submission information: Proposed Dates and Outcomes â Submission: 15 February 2023 â Notification to authors (first round): 15 April 2023 â Submission of revised papers (second round): 15 June 2023 â Notification to authors (second round): 15 August 2023 â Submission after second review: 15 October 2023 â Final acceptance: 15 November 2023 â Date of publication: 15 December 2023 Submission Guidelines The call for this special issue is an open call. We invite innovative research with a sound scientific or technological basis and validation. We accept submissions of original and previously unpublished manuscripts and we especially encourage the submission of revised and extended papers from the 15th ACM SIGPLAN International Conference on Software Language Engineering (SLE 2022). If a previous version of the manuscript has been published in a conference or journal, then authors must explicitly explain the novelty of this new submission and provide at least 30% new material. Surveys, literature reviews and mapping studies would not be considered as part of this special issue. All manuscripts and any supplementary material should be submitted through the Elsevier Editorial System at https://www.editorialmanager.com/jssoftware/default1.aspx. Follow the submission instructions given on this site. During the submission process, select the article type "VSI:SLE" from the "Choose Article Type" pull-down menu. All submissions must adhere to the general principles of the Journal of Systems and Software articles. Submissions have to be prepared according to the Guide for Authors, available on the journal website, and must follow the format specified in the JSS Guide for Authors https://www.elsevier.com/journals/journal-of-systems-and-software/0164-1212…. For more information about the special issue, please contact the guest editors.

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MIDI Interface?
by Stewart MacLean Jan. 13, 2023

Jan. 13, 2023

Hi all, Just wondering what the current state of interfaces to MIDI within Pharo are? I gather that there was one (SoundScores that used primitives), but that seems to have disappeared... Cheers, Stewart

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This week (2/2023) on the Pharo Issue Tracker
by Marcus Denker Jan. 13, 2023

Jan. 13, 2023

42 PRs merged, 40 Issues closed Features ======= - RubTextEditor/TextEditor: Make ctrl+backspace delete the previous word #12096 https://github.com/pharo-project/pharo/pull/12096 - Add source and target labels to SpChooserPresenter ( #1341) #1342 https://github.com/pharo-spec/Spec/pull/1342 Git/Iceberg ============ - add a manual way to add/remove tags #1657 https://github.com/pharo-vcs/iceberg/pull/1657 - add default tag "system" to bootstrap registered projects #12303 https://github.com/pharo-project/pharo/pull/12303 - fix bad categorizations #1655 https://github.com/pharo-vcs/iceberg/pull/1655 - Adapt to latest spec2 pass2 #1632 https://github.com/pharo-vcs/iceberg/pull/1632 Refactoring Engine ================== - Cleaning RB issues #12151 https://github.com/pharo-project/pharo/pull/12151 - Refactorings cleanup #12256 https://github.com/pharo-project/pharo/pull/12256 Fixes ===== - Fix refactoring using old class def #12195 https://github.com/pharo-project/pharo/pull/12195 - remove ByteLayout from FFIBackend and children #12225 https://github.com/pharo-project/pharo/pull/12225 - 12289-Refactoring-Tests-are-failling-when-using-Fluid-syntax #12290 https://github.com/pharo-project/pharo/pull/12290 - Fix hasSelector:specialSelectorIndex: on FFI methods that are compiled #12305 https://github.com/pharo-project/pharo/pull/12305 - 12300-Compiler-is-slow-with-string-literals-containing-exclamation-marks #12306 https://github.com/pharo-project/pharo/pull/12306 Cleanups ======== - 18 whitespace cleanups like Cleanup: Condense CodeImport packages #12229 https://github.com/pharo-project/pharo/pull/12229 - 5 remove return out of isTrue:ifFalse: lke extract return from ifTrue:ifFalse: expression in Number floor #12292 https://github.com/pharo-project/pharo/pull/12292 - remove #Numeric from source code. #12265 https://github.com/pharo-project/pharo/pull/12265 - 12307 remove gt pragma #12308 https://github.com/pharo-project/pharo/pull/12308 - Unncessary class RBMissingOpenerErrorNode #12313 https://github.com/pharo-project/pharo/pull/12313 - Class RBShortAssignmentToken is not needed anymore #12315 https://github.com/pharo-project/pharo/pull/12315 Comments ======== - Improving layoutFrame comments and add examples (fixes #12259) #12260 https://github.com/pharo-project/pharo/pull/12260 - extract comments as runnable example in Number>>#// #12263 https://github.com/pharo-project/pharo/pull/12263 - use isInstanceSide message in example #12270 https://github.com/pharo-project/pharo/pull/12270

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IWST proceedings online
by stephane ducasse Jan. 12, 2023

Jan. 12, 2023

Hi guys Iâm happy to sahre with you this EXCELLENT news. The proceedings of IWST 22 are now online https://ceur-ws.org/Vol-3325/ï¿¼ in a nice collection. I would like to warmly thank all the authors, loic and vincent for their great job. Soon we will send around the call for paper for 2023! S

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This week (1/2023) on the Pharo Issue Tracker
by Marcus Denker Jan. 6, 2023

Jan. 6, 2023

We merged 32 PRs and closed 16 issues this week Features ========= - Slots: For experiments, add Setting for unrestricted definitions #12113 https://github.com/pharo-project/pharo/pull/12113 - Introduce release test to check that "selectors send but not implemented" cases do not grow #12117 https://github.com/pharo-project/pharo/pull/12117 - New rule to remove unnecessary separators and dots #12167 https://github.com/pharo-project/pharo/pull/12167 - Potential Magritte extensions to be harvested to improve collection #12179 https://github.com/pharo-project/pharo/pull/12179 Fixes ===== - DoubleLinkedList newFrom: does not work correctly #12164 https://github.com/pharo-project/pharo/pull/12164 - Formatter adds unnecessary empty line before (first) method comment #12178 https://github.com/pharo-project/pharo/pull/12178 - Recursion found #12182 https://github.com/pharo-project/pharo/pull/12182 - fix Set class comment #12222 https://github.com/pharo-project/pharo/pull/12222 - RBMakeClassAbstractTransformation-no-whitespace #12209 https://github.com/pharo-project/pharo/pull/12209 - fix TFProcessLocalWorker with callbacks #12207 https://github.com/pharo-project/pharo/pull/12207 - ReCompactSourceCodeCritic should change origin method - not methodClass #12202 https://github.com/pharo-project/pharo/pull/12202 - 12157-BadHasherhash-should-return-a-value #12199 https://github.com/pharo-project/pharo/pull/12199 - 12191-RBAddMethodChange-moves-all-uncategorized-to-accessing #12192 https://github.com/pharo-project/pharo/pull/12192 Cleanup ======= - Move SearchFacade to MonticelloGUI #12144 https://github.com/pharo-project/pharo/pull/12144 - 11634-Unimplemented-message-send-in-FT2FaceemboldenOutline #12103 https://github.com/pharo-project/pharo/pull/12103 - extract return statement from ifTrue:ifFalse: expression. fix: #12155 #12156 https://github.com/pharo-project/pharo/pull/12156 - Cleanup: fix lints for morphic classes on class side #initialize (SECOND ATTEMPT) #12160 https://github.com/pharo-project/pharo/pull/12160 - Cleanup: more instance side #initialize categorization cleanups (SECOND ATTEMPT) #12227 https://github.com/pharo-project/pharo/pull/12227 - Many (12) whitespace cleanups PR like: Cleanup: Condense AST- packages #12185 https://github.com/pharo-project/pharo/pull/12185

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CodeParadise runs on P10
by erik.stel＠gmail.com Jan. 3, 2023

Jan. 3, 2023

Hi all. A small holiday present for anyone interested: [https://github.com/ErikOnBike/CodeParadise](https://github.com/ErikOnBike/C… "https://github.com/ErikOnBike/CodeParadise") now runs on P10 (and P11 with some care)! If you are using it on P8, please unload the CP-ClientEnvironment and reload it using the "pharo8" branch: ``` Metacello new repository: 'github://ErikOnBike/CP-ClientEnvironment:pharo8'; baseline: 'CodeParadise'; load. ``` P11 seems to have some issues sometimes with restarting the image. Have not found the exact cause. Will look into this.\ \ Happy holidays!

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[ANN] PI version 0.7
by HernÃ¡n Morales Durand Jan. 3, 2023

Jan. 3, 2023

Hello "PI", which stands for "Pharo Install", is a command line interface (CLI) to query and install Pharo packages: https://github.com/hernanmd/pi. With PI you can install Pharo packages in a unix-like shell command line interface. For example: $ pi install ISO3166 To get your repository listed with the "pi list" command, just tag your GitHub repository with "pharo". If there are multiple repositories with the same name, you can disambiguate specifying the repository owner: $ pi install user-name/repository-name Please let me know if this tool is also useful to you; and do not hesitate to ask a question that might appear using pi. Enjoy, HernÃ¡n

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ANSI instance creation methods for RunArray
by Richard O'Keefe Jan. 3, 2023

Jan. 3, 2023

Here's a teeny tiny Christmas present: ANSI-compatible instance creation methods for RunArray.

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