September 2018 - Pharo-users

Re: [Pharo-users] [Moose-dev] Pharo eye-candy: Domain-Specific Modeling and Simulation

by Nick Papoylias

Thanx Alex :) Looking forward to the Roassal talk on Thursday ! On Fri, Sep 7, 2018 at 5:22 PM Alexandre Bergel via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > Wow!!!!! > You guys rock! > > Alexandre > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > On Sep 6, 2018, at 2:17 PM, Nick Papoylias <npapoylias(a)gmail.com> wrote: > > A nice example of how Pharo can be used for > domain-specific modeling and simulation. Short > session from one of our projects at Rochelle: > > https://www.youtube.com/watch?v=Z7wJNhAIaVQ > > Some additional info here: https://goo.gl/jS4NjB > > Currently investigating how to incorporate the new Bloc based > widgets of @feenkcom into the workflow. > > Cheers, > > Nick > _______________________________________________ > Moose-dev mailing list > Moose-dev(a)list.inf.unibe.ch > https://www.list.inf.unibe.ch/listinfo/moose-dev > > >

Sept. 7, 2018

Re: [Moose-dev] Pharo eye-candy: Domain-Specific Modeling and Simulation

by Alexandre Bergel

Wow!!!!! You guys rock! Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > On Sep 6, 2018, at 2:17 PM, Nick Papoylias <npapoylias(a)gmail.com> wrote: > > A nice example of how Pharo can be used for > domain-specific modeling and simulation. Short > session from one of our projects at Rochelle: > > https://www.youtube.com/watch?v=Z7wJNhAIaVQ <https://www.youtube.com/watch?v=Z7wJNhAIaVQ> > > Some additional info here: https://goo.gl/jS4NjB <https://goo.gl/jS4NjB> > > Currently investigating how to incorporate the new Bloc based > widgets of @feenkcom into the workflow. > > Cheers, > > Nick > _______________________________________________ > Moose-dev mailing list > Moose-dev(a)list.inf.unibe.ch > https://www.list.inf.unibe.ch/listinfo/moose-dev

Sept. 7, 2018

Re: [Pharo-users] Pharo 6 snap package

by Guillermo Polito

Hi all, Nope, I'm not maintaining my package. I was experimenting with it at some point (2 years ago?) and then saw somebody else started with a more complete solution so I've not continued working on it. Personally, I've experienced the same sandboxing problems stated by Alistair, plus the fact that at that moment Snap was not working in *nixes other than Ubuntu made me put my energy somewhere else. Three points more: - for those that do not know exactly what we are talking about, snap is "new" a packaging tool used in ubuntu. I strongly believe that we could use some kind of tool like this for the VM, but not for image (which are mutable). - it could maybe make more sense to package the pharo launcher? ;) - rather than snaps, I'd put my 2cents on a solution like https://github.com/probonopd/appimagekit/. I've been following it for two years and it has a lot of movement and getting mature. On Fri, Aug 24, 2018 at 6:18 PM Alistair Grant <akgrant0710(a)gmail.com> wrote: > Hi Hannes, > > On Fri, 24 Aug 2018 at 06:36, H. Hirzel <hannes.hirzel(a)gmail.com> wrote: > > > > Hello Alistair > > > > Thank you for the detailed answer. I understand that at the moment > > going for a Pharo snap package does not seem to be useful. > > > > In particular as a Pharo installation may reside in a directory with > > everything included. > > So different Pharo installations may reside in different directories. > > Yep. Especially if using the in-development version of Pharo > (currently 7), I find it useful to pair images and VMs. > > > > I think where snap still might come is for solutions which require > > more than a particular Pharo installation. > > > > For example I could think of combining a particular Pharo version with > > a particular Jupyter notebook installation into a snap which could > > lead to a web based 'Dynabook' solution. > > That was one of the things that attracted me to snaps originally, I > use sqlite in my daily environment, so included it in the Pharo snap. > > > > I am also looking forward to Guille's answer. > > +1. > > Cheers, > Alistair > > > > Regards > > Hannes > > > > On 8/23/18, Alistair Grant <akgrant0710(a)gmail.com> wrote: > > > Hi Hannes, > > > > > > On Wed, 22 Aug 2018 at 17:20, H. Hirzel <hannes.hirzel(a)gmail.com> > wrote: > > >> > > >> Hello > > >> > > >> Are there plans to do a Pharo 6.1 snap package in the upcoming > > >> months? (Ubuntu 18.04.1) > > > > > > I haven't been thinking about it really, because: > > > > > > - The big attraction for me was the ability to easily run 32 bit Pharo > > > on a 64 bit OS without installing all the dependencies. But now that > > > 64 bit Pharo is stable that driver has largely gone. > > > - The sandboxing is quite limiting for a development environment, so > > > if you want to run commands on the localhost you end up doing > > > something like ssh'ing the command to localhost. > > > - The snap runtime environment is still quite immature - I've had to > > > deal with bugs in snapd, the gtk desktop interface, loading 32 bit > > > executables, etc. > > > - The snapcraft build environment is still evolving, so I have to keep > > > up with the changes. > > > - I was originally compiling the 32 and 64 bit VMs as part of the > > > build process, but that is problematic as the 32 and 64 bit libraries > > > tend to interfere with each other making the build process unstable. > > > - You can't run multiple versions of a snap on one system, e.g. we > > > can't have Pharo 6 and Pharo 7 installed simultaneously under the one > > > snap name (pharo). I tried to register Pharo7 so pharo could be the > > > GA version (6), but never got a response. > > > > > > I was listening to an Ubuntu podcast just this week where one of the > > > hosts tried installing 4 packages via snaps and ended up going back to > > > debian packages for 3 of the packages due to problems, so it obviously > > > still isn't mature. > > > > > > I realise that every software package has its own issues, I'm sure > > > someone from the snap community could find parallel issues with Pharo, > > > but it wasn't where I wanted to be spending all my time. > > > > > > If someone wants to take it over, I'm more than happy to pass it on > > > (although it isn't building at the moment due to changes in > > > snapcraft). > > > > > > If there is enough interest I'll try and update it to run Pharo 6.1. > > > > > > If Guille is actively maintaining his package, maybe we should move to > > > that (I haven't looked at it). > > > > > > Cheers, > > > Alistair > > -- Guille Polito Research Engineer Centre de Recherche en Informatique, Signal et Automatique de Lille CRIStAL - UMR 9189 French National Center for Scientific Research - *http://www.cnrs.fr <http://www.cnrs.fr>* *Web:* *http://guillep.github.io* <http://guillep.github.io> *Phone: *+33 06 52 70 66 13

Sept. 7, 2018

Re: [Pharo-users] adding instance variables (data) to the Object class

by Petr Fischer

I see... will test them, thanks! pf > Talents with statefull traits will help you > > Ð¿Ñ, 7 ÑÐµÐ½Ñ. 2018 Ð³., 9:08 Marcus Denker <marcus.denker(a)inria.fr>: > > > > > > > On 6 Sep 2018, at 23:35, Petr Fischer via Pharo-users < > > pharo-users(a)lists.pharo.org> wrote: > > > > > > *From: *Petr Fischer <petr.fischer(a)me.com> > > *Subject: **adding instance variables (data) to the Object class* > > *Date: *6 September 2018 at 23:35:26 CEST > > *To: *pharo-users(a)lists.pharo.org > > > > > > Hello! Weird question: why I can't add instance variables to the Object > > class (for example "oid" or something else)? Is it due to some internal > > (and different) VM "class layouts"? > > > > Or - can I inject my own information to all existing objects (any class)? > > > > > > Behavior is a subclass of Object, too. So that means that you would add a > > ivar to all the classes, but for the VM an object can only be a class that > > has three ivars, and those > > are accessed by offset. So if you add an ivar, you shift the offset â> > > problem. > > > > As for âI want to add object specific stateâ: it would be nice to add an > > easy to use (and efficient) mechanism to do it. > > > > Marcus > >

Sept. 7, 2018

Re: [Pharo-users] adding instance variables (data) to the Object class

by Denis Kudriashov

Talents with statefull traits will help you Ð¿Ñ, 7 ÑÐµÐ½Ñ. 2018 Ð³., 9:08 Marcus Denker <marcus.denker(a)inria.fr>: > > > On 6 Sep 2018, at 23:35, Petr Fischer via Pharo-users < > pharo-users(a)lists.pharo.org> wrote: > > > *From: *Petr Fischer <petr.fischer(a)me.com> > *Subject: **adding instance variables (data) to the Object class* > *Date: *6 September 2018 at 23:35:26 CEST > *To: *pharo-users(a)lists.pharo.org > > > Hello! Weird question: why I can't add instance variables to the Object > class (for example "oid" or something else)? Is it due to some internal > (and different) VM "class layouts"? > > Or - can I inject my own information to all existing objects (any class)? > > > Behavior is a subclass of Object, too. So that means that you would add a > ivar to all the classes, but for the VM an object can only be a class that > has three ivars, and those > are accessed by offset. So if you add an ivar, you shift the offset â> > problem. > > As for âI want to add object specific stateâ: it would be nice to add an > easy to use (and efficient) mechanism to do it. > > Marcus >

Sept. 7, 2018

Re: [Pharo-users] adding instance variables (data) to the Object class

by Marcus Denker

> On 6 Sep 2018, at 23:35, Petr Fischer via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > From: Petr Fischer <petr.fischer(a)me.com> > Subject: adding instance variables (data) to the Object class > Date: 6 September 2018 at 23:35:26 CEST > To: pharo-users(a)lists.pharo.org > > > Hello! Weird question: why I can't add instance variables to the Object class (for example "oid" or something else)? Is it due to some internal (and different) VM "class layouts"? > > Or - can I inject my own information to all existing objects (any class)? > Behavior is a subclass of Object, too. So that means that you would add a ivar to all the classes, but for the VM an object can only be a class that has three ivars, and those are accessed by offset. So if you add an ivar, you shift the offset â> problem. As for âI want to add object specific stateâ: it would be nice to add an easy to use (and efficient) mechanism to do it. Marcus

Sept. 7, 2018

Re: [Pharo-users] Configuring iceberg on Windows

by Ben Coman

On Fri, 7 Sep 2018 at 10:11, Andrei Stebakov <lispercat(a)gmail.com> wrote: > I was trying debug it a little to see if how iceberg uses the path to > private and public keys. When I mangle the path to something non-existent I > got no error saying that the path is wrong. What would be a way to verify > that iceberg actually uses the keys? > I don't know. Just wanted to suggest it would be useful to have a <Test> button under "Use custom SSH keys" that does the equivalent of "ssh -T git(a)github.com" https://help.github.com/articles/testing-your-ssh-connection/ cheers -ben

Sept. 7, 2018

Re: [Pharo-users] Configuring iceberg on Windows

by Andrei Stebakov

I was trying debug it a little to see if how iceberg uses the path to private and public keys. When I mangle the path to something non-existant I got no error saying that the path is wrong. What would be a way to verify that iceberg actually uses the keys? On Thu, Sep 6, 2018, 16:35 Peter Uhnak <i.uhnak(a)gmail.com> wrote: > > I need to get past that error since I get it even when I install Moose > via Metacello. > > Note that Moose depends on projects that are on github, so if it is > misconfigured, then it will fail. > Maybe you can provide both the ssh key and regular key/password? I use > both and so far I had no problems on neither Windows nor Linux. > > Peter > > On Thu, Sep 6, 2018 at 6:28 PM Ben Coman <btc(a)openinworld.com> wrote: > >> On Thu, 6 Sep 2018 at 21:58, Andrei Stebakov <lispercat(a)gmail.com> wrote: >> >>> I followed the tutorial >>> >> >> Hi Andrei, Could you be specific about which tutorial that was. I'm not >> sure if I'm just getting by on old knowledge >> or the much improved Iceberg UI and its good to refresh myself with such >> tutorials. >> >> >> >>> and provided IceCredentialProvider with ssh settings, also put the same >>> settings in Settings-Tools-Software Configuration Management. >>> It seems not to have any effect since when I try to create a repo using >>> SSH it gives the error "Failed to connect to github.com". >>> I need to get past that error since I get it even when I install Moose >>> via Metacello. >>> Do I need to add ssh-agent as well? If yes, why do we need to provide >>> public/private key paths with IceCredentialProvider? >>> >> >> In the past I had github+ssh working on Windows with "Use custom SSH >> keys" enabled" >> but then a while ago it stopped for "no apparent reason"(TM). >> Co-incidentally a few hours ago I solved my problem. >> >> I went back to basics checking from command line per... >> https://help.github.com/articles/testing-your-ssh-connection/ >> and found ```ssh -T git(a)github.com``` erroring with... >> "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ >> @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ >> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ >> Permissions for 'C:\\Users\\Ben/.ssh/id_rsa' are too open. >> It is required that your private key files are NOT accessible by others. >> This private key will be ignored. >> Load key "C:\\Users\\Ben/.ssh/id_rsa": bad permissions >> git(a)github.com: Permission denied (publickey). >> >> I right-clicked on my folder C:\Users\ben\.ssh >> then Properties > Security > Advanced > Disable Inheritance >> then removed SYSTEM, Administrator & Administrators leaving only BEN. >> >> Then this worked... >> C:>ssh -T git(a)github.com >> Hi bencoman! You've successfully authenticated, but GitHub does not >> provide shell access. >> >> And now also worked from within Pharo (with "Use custom SSH keys" >> enabled") >> >> HTH, cheers -ben >> >

Sept. 7, 2018

adding instance variables (data) to the Object class

by Petr Fischer

Hello! Weird question: why I can't add instance variables to the Object class (for example "oid" or something else)? Is it due to some internal (and different) VM "class layouts"? Or - can I inject my own information to all existing objects (any class)? Thanks! pf

Sept. 6, 2018

Re: [Pharo-users] Configuring iceberg on Windows

by Peter Uhnak

> I need to get past that error since I get it even when I install Moose via Metacello. Note that Moose depends on projects that are on github, so if it is misconfigured, then it will fail. Maybe you can provide both the ssh key and regular key/password? I use both and so far I had no problems on neither Windows nor Linux. Peter On Thu, Sep 6, 2018 at 6:28 PM Ben Coman <btc(a)openinworld.com> wrote: > On Thu, 6 Sep 2018 at 21:58, Andrei Stebakov <lispercat(a)gmail.com> wrote: > >> I followed the tutorial >> > > Hi Andrei, Could you be specific about which tutorial that was. I'm not > sure if I'm just getting by on old knowledge > or the much improved Iceberg UI and its good to refresh myself with such > tutorials. > > > >> and provided IceCredentialProvider with ssh settings, also put the same >> settings in Settings-Tools-Software Configuration Management. >> It seems not to have any effect since when I try to create a repo using >> SSH it gives the error "Failed to connect to github.com". >> I need to get past that error since I get it even when I install Moose >> via Metacello. >> Do I need to add ssh-agent as well? If yes, why do we need to provide >> public/private key paths with IceCredentialProvider? >> > > In the past I had github+ssh working on Windows with "Use custom SSH keys" > enabled" > but then a while ago it stopped for "no apparent reason"(TM). > Co-incidentally a few hours ago I solved my problem. > > I went back to basics checking from command line per... > https://help.github.com/articles/testing-your-ssh-connection/ > and found ```ssh -T git(a)github.com``` erroring with... > "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ > @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ > @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ > Permissions for 'C:\\Users\\Ben/.ssh/id_rsa' are too open. > It is required that your private key files are NOT accessible by others. > This private key will be ignored. > Load key "C:\\Users\\Ben/.ssh/id_rsa": bad permissions > git(a)github.com: Permission denied (publickey). > > I right-clicked on my folder C:\Users\ben\.ssh > then Properties > Security > Advanced > Disable Inheritance > then removed SYSTEM, Administrator & Administrators leaving only BEN. > > Then this worked... > C:>ssh -T git(a)github.com > Hi bencoman! You've successfully authenticated, but GitHub does not > provide shell access. > > And now also worked from within Pharo (with "Use custom SSH keys" enabled") > > HTH, cheers -ben >

Sept. 6, 2018