December 2015 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] D language

by Dimitris Chloupis

Fair enough Whats that PyBridge you talking about ? First time I hear that. Well my own python bridge works well for what I need it for, its not that hard to bridge languages at least for some form of basic RPC. Deeper language integration would need money and multiple developers of course. As always the hard part is to make something that works not only for your own personal needs but for the needs of many other users. So many diffirent designs have to applied and planned ahead. On Sun, Dec 13, 2015 at 1:54 PM phil(a)highoctane.be <phil(a)highoctane.be> wrote: > A a C++ developer, I think I can better relate to D. > > Yeah, Nim is nice. > > I asked about the PyBridge as well (as there is in OpenQwaq|Terf) but no > response from Ron so far. > > We need more bridges, that's my long term play. > > Some decent cash is coming my way, so I hope that I'll be able to devote > more time to these projects. > That's always the same story, cash buys time... > > Phil > > > On Sun, Dec 13, 2015 at 11:34 AM, Dimitris Chloupis <kilon.alios(a)gmail.com > > wrote: > >> From a basic search it appears that D can generate dynamically linked >> libraries (DLL , SO, etc) which will be the easiest way to extend pharo >> using D. >> >> However from a very basic search I did it looks like generating >> dynamically linked libraries with D is not as straightforward as someone >> would expect. >> >> http://forum.dlang.org/thread/k3vfm9$1tq$1@digitalmars.com >> >> If you are not bound to D for creating system-level extensions for Pharo >> you have several options >> >> 1) nim language is used by gokr and his company and they use it to extend >> Squeak >> >> here is a blog post about what nim is >> >> http://hookrace.net/blog/what-is-special-about-nim/ >> >> and here is a blog post of gokr about how to get it to work with squeak >> and pharo >> >> http://goran.krampe.se/2014/11/03/squeak-to-nim/ >> >> 2) Maybe just maybe you could use Slang , which is basically smalltalk >> that compiles to C and is what the pharo VM uses a lot. But I am not >> certain. >> >> PS: Just realised you commented on that blog post so you may be aware of >> all this, but you can take this as a friendly reminder of your potential >> solutions :) >> >> >> >> On Sun, Dec 13, 2015 at 2:16 AM phil(a)highoctane.be <phil(a)highoctane.be> >> wrote: >> >>> Anyone having used D to build system-level extensions for Pharo? >>> >>> TIA, >>> Phil >>> >> >

Dec. 13, 2015

Re: [Pharo-dev] D language

by phil＠highoctane.be

A a C++ developer, I think I can better relate to D. Yeah, Nim is nice. I asked about the PyBridge as well (as there is in OpenQwaq|Terf) but no response from Ron so far. We need more bridges, that's my long term play. Some decent cash is coming my way, so I hope that I'll be able to devote more time to these projects. That's always the same story, cash buys time... Phil On Sun, Dec 13, 2015 at 11:34 AM, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > From a basic search it appears that D can generate dynamically linked > libraries (DLL , SO, etc) which will be the easiest way to extend pharo > using D. > > However from a very basic search I did it looks like generating > dynamically linked libraries with D is not as straightforward as someone > would expect. > > http://forum.dlang.org/thread/k3vfm9$1tq$1@digitalmars.com > > If you are not bound to D for creating system-level extensions for Pharo > you have several options > > 1) nim language is used by gokr and his company and they use it to extend > Squeak > > here is a blog post about what nim is > > http://hookrace.net/blog/what-is-special-about-nim/ > > and here is a blog post of gokr about how to get it to work with squeak > and pharo > > http://goran.krampe.se/2014/11/03/squeak-to-nim/ > > 2) Maybe just maybe you could use Slang , which is basically smalltalk > that compiles to C and is what the pharo VM uses a lot. But I am not > certain. > > PS: Just realised you commented on that blog post so you may be aware of > all this, but you can take this as a friendly reminder of your potential > solutions :) > > > > On Sun, Dec 13, 2015 at 2:16 AM phil(a)highoctane.be <phil(a)highoctane.be> > wrote: > >> Anyone having used D to build system-level extensions for Pharo? >> >> TIA, >> Phil >> >

Dec. 13, 2015

Re: [Pharo-dev] D language

by Dimitris Chloupis

>From a basic search it appears that D can generate dynamically linked libraries (DLL , SO, etc) which will be the easiest way to extend pharo using D. However from a very basic search I did it looks like generating dynamically linked libraries with D is not as straightforward as someone would expect. http://forum.dlang.org/thread/k3vfm9$1tq$1@digitalmars.com If you are not bound to D for creating system-level extensions for Pharo you have several options 1) nim language is used by gokr and his company and they use it to extend Squeak here is a blog post about what nim is http://hookrace.net/blog/what-is-special-about-nim/ and here is a blog post of gokr about how to get it to work with squeak and pharo http://goran.krampe.se/2014/11/03/squeak-to-nim/ 2) Maybe just maybe you could use Slang , which is basically smalltalk that compiles to C and is what the pharo VM uses a lot. But I am not certain. PS: Just realised you commented on that blog post so you may be aware of all this, but you can take this as a friendly reminder of your potential solutions :) On Sun, Dec 13, 2015 at 2:16 AM phil(a)highoctane.be <phil(a)highoctane.be> wrote: > Anyone having used D to build system-level extensions for Pharo? > > TIA, > Phil >

Dec. 13, 2015

D language

by phil＠highoctane.be

Anyone having used D to build system-level extensions for Pharo? TIA, Phil

Dec. 13, 2015

Re: [Pharo-dev] [Vm-dev] Cog Rump Xen unikernel

by Ben Coman

On Sat, Dec 12, 2015 at 4:38 AM, Holger Freyther <holger(a)freyther.de> wrote: > >> On 11 Dec 2015, at 20:09, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: >> >> Ben, >> >> great to hear you're working on this! I'm watching with bated breath! BTW, you might find that Docker is easier and more general; I believe there's no Xen for ARM for example, and ARM is increasingly interesting with up coming extremely cheap 64-bit versions of Pi and PINE. Good luck!! > > @Eliot: There is Xen for ARMv8 (because ARM is interesting for multi-core servers) Indeed, ARM seems a very good fit for the Xen hypervisor. http://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions_whit… Some technical info on ARM virtualization [1] 8:50 technical info starts (note, sound broken first 0:30) 11:55 nice overview of architecture virtualization support * RasPi 2 with Cortex-A7 would thus seem support Xen virtualization (but other revision not) * BeagleBoneBlack with Cortex-A8 would seem not to :( but maybe the next upgrade, the future comes around fast sometimes... * PINE with Cortex-A53 would support Xen virtualization 14:00 shows privilege model where perhaps something like the car drive-by-wire system runs in the "Secure world", and entertainment apps (e.g. Pharo/Squeak) run under the hypervisor. I'm not sure Docker provides provides this separation. 24:05 not that I understand a "2MB section" but it seems useful our VM fits within that 26:00 Handles 256 running VMs per CPU. 31:00 Timers [1] https://www.youtube.com/watch?v=uvh6Mu3j1oY > @Ben: Awesome. Will be interesting how small one can get it (with still functioning TCP/IP) StackVM = 1.4MB StackVM.unikernel = 15MB Pharo.image += 30MB so without trying gives a system ~45MB + application code Alternatively pharo-minimal.image = 6.2MB giving a system ~21MB + application code. For comparison [2] discusses typically having 1GB docker images, but they can reasonably trim it to 85MB - but how much functionality do they lose (e.g. we can retain out GUI debugger). So even though raw Go apps get down to 3.5MB, I think the rump kernel puts us in the ball park. [2] https://labs.ctl.io/optimizing-docker-images/?hvid=1OW0br cheers -ben

Dec. 12, 2015

Re: [Pharo-dev] Some GT tool for this?

by stepharo

yes Le 10/12/15 18:12, Mariano Martinez Peck a Ã©crit : > How many times have you tried to search a string as a comment of a > commit in all the history? Myself: many many times. I know we need > much better tools for that, store the history in a another way, > provide a nicer API, etc etc. And I know there were topics about that. > > However, I would deeply appreciate a very short term solution for ease > that. The model side is as simple as this: > > | packageName ancestry anscestors substring | > packageName := 'MyPackageXX'. > substring := 'whatever I want to search'. > ancestry := (MCWorkingCopy allManagers detect: [:each | each > packageName = packageName] ) ancestry. > anscestors := ancestry withBreadthFirstAncestors select: [:each | each > isKindOf: MCVersionInfo]. > anscestors select: [ :each | each message includesSubstring: substring ] > > Do you think it's worth a simple UI tool? Custom inspector of MCAncestry? > > Cheers, > > > -- > Mariano > http://marianopeck.wordpress.com

Dec. 12, 2015

[JOB] Pharo Engineer, IoT

by Marcus Denker

Engineer Position 1 Year =================== INRIA RMoD and the Pharo Consortium are looking for a full-time engineer for helping with developing Pharo. The focus of this job is "Pharo on embedded and mobile devices for the internet of things". - Embedded Pharo on ARM The currently available class of ARM devices (BeagleBone, Raspberry PI) are a very interesting platform for Pharo. The engineer should strengthen the existing efforts to get Pharo working on these platforms. - Pharo on Android Improve the support of Android devices. With Pharo6, we will migrate to a complete new design and implementation of UI, Windowing and graphics. The engineer will work on making these features available on Android devices. - Pharo itself The engineer is expected to be actively involved in helping to improve the infrastructure that the Pharo community used (CI server for continues integration, interplay with issue tracking) and to actively help with day-to-day bug fixing. We are looking for a candidate with some prior experience with Pharo - Knowledge in Dynamic Languages - Experience with mobile development is a plus - English Work in a research lab, but no paper writing, no teaching, no administration. In addition: - centrally located (one hour from Paris, 1h20 from London, 35 min from Brussels) - try a lot of good beer (our office is just 10km from the border to Belgium) - Program with Pharo all day! Lille is an active city but not expensive (lot of students...), centrally located with good connections by train to everywhere (including CDG and Brussels airports). Duration: 12 month Starting date: as soon as possible (Spring 2016) Salary: 2600-3200 euros brut / month, depending on experience Location: Lille (no remote job possible) More about Pharo: http://www.pharo.org INRIA RMOD: http://rmod.lille.inria.fr INRIA Lille: http://www.inria.fr/lille/ INRIA in General: http://www.inria.fr Lille: http://en.wikipedia.org/wiki/Lille http://wikitravel.org/en/Lille Do not hesitate to contact us for more information.

Dec. 12, 2015

[JOB] Pharo Engineer, Infrastructure

by Marcus Denker

Engineer Position 1 year + 1 year ================================== INRIA RMoD and the Pharo Consortium are looking for a full-time engineer for helping with developing Pharo and the infrastructure around it. The focus of this job is the infrastructure that Pharo provides to external projects as well as the infrastructure we use to develop Pharo itself. - Infrastructure for external projects Pharo is used in many contexts: an ever growing number of frameworks are contributed by the community. Pharo already provides CI infrastructure, but what is missing is the automatic check of collections of frameworks and libraries. We want to provides validated "distributions" focussing on certain tasks, for example Pharo for Web development. - Pharo and Git Pharo has some support for using Git. The goal is to improve the support of git and other versioning systems. - Pharo itself The engineer is expected to be actively involved in helping to improve the infrastructure that the Pharo community uses (CI server for continues integration, interplay with issue tracking) and to actively help with day-to-day bug fixing. We are looking for a candidate with prior experience with Pharo and possibly some background in continuous integration: - Knowledge in Dynamic Languages - Continuous integration and deployment - English Work in a research lab, but no paper writing, no teaching, no administration. In addition: - Centrally located (one hour from Paris, 1h20 from London, 35 min from Brussels) - Try a lot of good beer (our office is just 10km from the border to Belgium) - Program with Pharo all day! Lille is an active city but not expensive (lot of students...), centrally located with good connections by train to everywhere (including CDG and Brussels airports). Duration: 12 + 12 months Starting date: Feb or March 2016 Salary: 2600-3200 euros brut / month, depending on experience Location: Lille (no remote job possible) More about Pharo: http://www.pharo.org INRIA RMOD: http://rmod.lille.inria.fr INRIA Lille: http://www.inria.fr/lille/ INRIA in General: http://www.inria.fr Lille: http://en.wikipedia.org/wiki/Lille http://wikitravel.org/en/Lille Do not hesitate to contact us for more information.

Dec. 12, 2015

Re: [Pharo-dev] Cog Rump Xen unikernel

by Ben Coman

Here is the recipe for my first successful build and run through to an error... StackVM.unikernel: could not find any display driver This is done under 32-bit Debian 8 Jessie. Attached is StackRumpXenUnikernelConfig.st # Built the Rumprun Platform $ mkdir -p cogunikernel $ git clone http://repo.rumpkernel.org/rumprun $ cd rumprun $ git submodule update --init $ CC=cc ./build-rr.sh xen >> toolchain tuple: i486-rumprun-netbsdelf >> cc wrapper: i486-rumprun-netbsdelf-gcc >> installed to "/home/ben/Repos/cogunikernel/rumprun/./rumprun" # Generated Cog VM sources $ cd ../../cogunikernel $ git clone https://github.com/pharo-project/pharo-vm.git $ cd pharo-vm/image $ ./newImage.sh $ ./pharo-ui generator.image Tools > File Browser Filed in StackRumpXenUnikernelConfig.st From class comment, evaluated... StackRumpXenUnikernelConfig new generateSources; generate. # Built the StackVM and StackVM.unikernel $ bash build.sh # Tested them... $ cd ../results $ ./StackVM > bash: ./StackVM: cannot execute binary file: Exec format error Good. That was the expected result. $ rumprun xen -i StackVM.unikernel > StackVM.unikernel: could not find any display driver # Stop unikernel machine running, from another terminal... $ xl list $ xl destroy rumprun-StackVM.unikernel ================ Now I basically just poked, cut and slashed the config until it could compile and boot up the unikernel, without regard for what that may break. Making the VM *actually* work is bigger step that for now is beyond me, but I'll have a bite at it. Really my motivation in doing this after I stumbled on the rumprun tutorial, was I wanted to crack the seal on it to interest others capable :). I'd be interested if the above recipe is successful for others. Todo: * incorporate rumprun as an auto-built third party library, rather than outside, perhaps using git submodule like the rump kernel already does (if these can be nested) * determine how to deal with different rumprun toolchains (depending on which platform the target) * move the baking step from the build script to the generated CMake configuration * determine how to deal with lack of display * determine how an image file might be passed to the VM - maybe baking the VM and image into a ram disk (?) cheers -ben

Dec. 12, 2015

squeak & pharo versions of crypto and SecureSession

by Robert Withers

Folks, I cross-tested with Pharo and here are the good versions: Cryptography - squeak: Cryptography-rww.49.mcz - pharo: Cryptography-Pharo-rww.38.mcz SecureSession: - squeak & pharo: SecureSession-RobertWithers.20.mcz I hope this helps, Robert

Dec. 12, 2015