April 2021 - Pharo-users - lists.pharo.org

Re: Problem with Pharo 9 - repositories missing

by StÃ©phane Ducasse

What the system is telling you is that: while the code of the projects is in your image/changes, the system does not know (it cannot invent because you could running it on the moon or mars for example) where are the git repositories where it could find the working copies and the versionned elements of such packages. I think that the status is pretty clear. So if you want to load code via git from your new machine there is no magic. Git is a distributed versioning system so you have to clone your repo locally and tell it to Pharo. Now iceberg is quite cool because if you do repair it will - clone - configure your working so that it correspond to the code version in your image - probably fetching some version. In fact there is no difference between your mac talking to github and another repository. You have local and remotes + pharo (another kind of local). So Pharo alone can work but it cannot guess where you decided to store your local git repositories. I hope that it helps. S > On 11 Apr 2021, at 13:43, David(a)totallyobjects.com wrote: > > Hi everyone. > > I have a simple talk, or so I thought. I am trying to port a Mac Pharo/Seaside project to either a Windows 2012 server or to a Windows 10 laptop. I have set up my git credentials and that all works fine. However, when I install either 8.0 or 9.0 on my Windows 10 laptop it shows he following > Repositories -- status > Pharo Local repository missing > Pharo-spec2 Local repository missing > Pharo-newtools Local repository missing > Iceberg Local repository missing > Libgit-pharo-bindings Local repository missing > tonel Local repository missing > > What on earth is going on here as installing Pharo on my Mac was seamless. I have to get the project onto a Windows machine as these are the only servers that I have. I really canât be this difficult, can it? > > How do I get out of this mess, given that that is a clean install? > David > Totally Objects -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

April 11, 2021

Problem with Pharo 9 - repositories missing

by david＠totallyobjects.com

Hi everyone. I have a simple talk, or so I thought. I am trying to port a Mac Pharo/Seaside project to either a Windows 2012 server or to a Windows 10 laptop. I have set up my git credentials and that all works fine. However, when I install either 8.0 or 9.0 on my Windows 10 laptop it shows he following Repositories -- status Pharo Local repository missing Pharo-spec2 Local repository missing Pharo-newtools Local repository missing Iceberg Local repository missing Libgit-pharo-bindings Local repository missing tonel Local repository missing What on earth is going on here as installing Pharo on my Mac was seamless. I have to get the project onto a Windows machine as these are the only servers that I have. I really can't be this difficult, can it? How do I get out of this mess, given that that is a clean install? David Totally Objects

April 11, 2021

Re: Whats the easiest/cheapest way to run a Pharo web app in 2021?

by StÃ©phane Ducasse

> On 10 Apr 2021, at 10:34, Norbert Hartl <norbert(a)hartl.name> wrote: > > I have the same. A cloud instance at Hetzner, nginx as webserver using certbot for automatic SSL generation. I also use a static site generator which I wrote myself to produce my blog https://norbert.hartl.name <https://norbert.hartl.name/> . I use the skeleton CSS library which is tiny and understandable and does not need tons of markup. > > This is one of my playgrounds for pillar and microdown. I think pharo settles around this combination to produce documents which is very well suited to produce a website, too. Leo a new student is arriving next week to work on pillar and help to start with. > > Norbert > >> Am 09.04.2021 um 03:33 schrieb Pierce Ng <pierce(a)samadhiweb.com <mailto:pierce@samadhiweb.com>>: >> >> On Thu, Apr 08, 2021 at 11:58:10AM +0100, Tim Mackinnon wrote: >>> Pierce - who/where are you rnning your Docker image? Do you use a >>> particular service (or are you running your own?) >> >> I am using a Linux VPS which I manage myself. >> >> The Pharo application is my blog. It was a web app fronted by a HTTPS >> reverse proxy. At the start of this year I rewrote it into a static site >> generator. Instead of running all the time, Pharo is now invoked when >> triggered by a CI hook, which happens when I publish a new blog post or >> otherwise update my site. >> >> I play with all kinds of software on my VPS and it was getting a bit RAM >> cramped, hence the rewrite. Wasn't willing to spend more money every month >> for more RAM. :-P >> >> Pierce > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

April 10, 2021

Re: Whats the easiest/cheapest way to run a Pharo web app in 2021?

by Norbert Hartl

I have the same. A cloud instance at Hetzner, nginx as webserver using certbot for automatic SSL generation. I also use a static site generator which I wrote myself to produce my blog https://norbert.hartl.name <https://norbert.hartl.name/> . I use the skeleton CSS library which is tiny and understandable and does not need tons of markup. This is one of my playgrounds for pillar and microdown. I think pharo settles around this combination to produce documents which is very well suited to produce a website, too. Norbert > Am 09.04.2021 um 03:33 schrieb Pierce Ng <pierce(a)samadhiweb.com>: > > On Thu, Apr 08, 2021 at 11:58:10AM +0100, Tim Mackinnon wrote: >> Pierce - who/where are you rnning your Docker image? Do you use a >> particular service (or are you running your own?) > > I am using a Linux VPS which I manage myself. > > The Pharo application is my blog. It was a web app fronted by a HTTPS > reverse proxy. At the start of this year I rewrote it into a static site > generator. Instead of running all the time, Pharo is now invoked when > triggered by a CI hook, which happens when I publish a new blog post or > otherwise update my site. > > I play with all kinds of software on my VPS and it was getting a bit RAM > cramped, hence the rewrite. Wasn't willing to spend more money every month > for more RAM. :-P > > Pierce

April 10, 2021

Re: Whats the easiest/cheapest way to run a Pharo web app in 2021?

by Pierce Ng

On Thu, Apr 08, 2021 at 11:58:10AM +0100, Tim Mackinnon wrote: > Pierce - who/where are you rnning your Docker image? Do you use a > particular service (or are you running your own?) I am using a Linux VPS which I manage myself. The Pharo application is my blog. It was a web app fronted by a HTTPS reverse proxy. At the start of this year I rewrote it into a static site generator. Instead of running all the time, Pharo is now invoked when triggered by a CI hook, which happens when I publish a new blog post or otherwise update my site. I play with all kinds of software on my VPS and it was getting a bit RAM cramped, hence the rewrite. Wasn't willing to spend more money every month for more RAM. :-P Pierce

April 9, 2021

Re: Whats the easiest/cheapest way to run a Pharo web app in 2021?

by Tim Mackinnon

Head slap.... I completely forgot I could do that, thanks for reminding Pierce (its almost better as well, as you can build your image, save it, then run tests on it, and then if it passes all your stages you can included the saved version in your docker build... which sits better with me as it also means that log artifacts etc can be more easily examined for failures (and your not trying to console into a docker image to figure it out). As a nice side effect - if you are doing this in something like Gitlab - you have your project source already there and so you can avoid an extra checkout step, so its a little bit faster. Pierce - who/where are you rnning your Docker image? Do you use a particular service (or are you running your own?) Tim On Thu, 8 Apr 2021, at 4:29 AM, Pierce Ng wrote: > On Wed, Apr 07, 2021 at 02:21:14AM +0100, Tim Mackinnon wrote: > > I also feel its quite important to call out that the "eval 'Metacello > > new..." command referenced in the DockerFile RUN - is only going to work > > Hi, > > I build my Pharo image outside of Docker. My Dockerfile then packages the > built image plus whatever artefacts required into a Docker image. I am > using my Alpine Linux-based VM. > > GH: https://github.com/pharo-contributions/Docker-Alpine/ > DH: https://hub.docker.com/r/pierceng/pharovm-alpine > > Pierce >

April 8, 2021

Re: Whats the easiest/cheapest way to run a Pharo web app in 2021?

by Pierce Ng

On Wed, Apr 07, 2021 at 02:21:14AM +0100, Tim Mackinnon wrote: > I also feel its quite important to call out that the "eval 'Metacello > new..." command referenced in the DockerFile RUN - is only going to work Hi, I build my Pharo image outside of Docker. My Dockerfile then packages the built image plus whatever artefacts required into a Docker image. I am using my Alpine Linux-based VM. GH: https://github.com/pharo-contributions/Docker-Alpine/ DH: https://hub.docker.com/r/pierceng/pharovm-alpine Pierce

April 8, 2021

Re: Help Needed: Looking for projects to use in a study of transforming deprecations

by Sebastian Jordan

Hi Oleksandr, Nice project! I don't have a project recommendation but maybe my project can be useful to you. One of the functionalities allows you to apply multiple transformation rules in a custom set of classes (or all classes in Pharo image). https://github.com/jordanmontt/RewriteToolsSet ________________________________ De: Oleksandr Zaitsev <olk.zaytsev(a)gmail.com> Enviado: martes, 6 de abril de 2021 08:50 Para: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> Cc: StÃ©phane Ducasse <stephane.ducasse(a)inria.fr>; Nicolas Anquetil <nicolas.anquetil(a)inria.fr>; arnaud.thiefaine(a)arolla.fr <arnaud.thiefaine(a)arolla.fr> Asunto: [Pharo-users] Help Needed: Looking for projects to use in a study of transforming deprecations Hello, I need your help to recommend some projects that I can use in my study of transforming deprecations. As many of you know, Pharo supports a very powerful concept of "transforming" deprecations. You can deprecate a method, providing a transformation rule. Then when a client application calls the deprecated method, the call-site will be automatically rewritten to use the new API. Here is an example of a transforming deprecation: Collection >> includesAllOf: values self deprecated: âUse #includesAll: insteadâ transformWith: â`@rec includesAllOf: `@argâ -> â`@rec includesAll: `@argâ. ^ self includesAll: values You can read more about transforming deprecations in my blog post: https://blog.oleks.fr/deprewriter<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fblog.oleks…> I am working on a tool that can analyse the commit history of a project and recommend deprecations and transformation rules that can be inserted before the release. It works like this: 1. Collect all commits between two releases of a project 2. Mine those commits to identify method call replacements (deletions and additions) that happen frequently 3. Infer the mapping between the methods of the old and new API 4. Recommend deprecations and generate transformation rules I have validated my approach on Pharo, Moose, Pillar, Famix, and DataFrame projects. Now I am looking for other projects that could benefit from recommended deprecations and could be used in my study. Required: - open source project with accessible commit history (e.g. public git repository) - written in Pharo (although if you know projects in other languages that could be interesting for my study, please let me know about them as well) Prefered: - ongoing development - multiple releases - has users (other projects that depend on it) If you have some projects in mind, please let me know about them! And if you are interested in this study and want to learn more, don't hesitate to contact me by email. Oleksandr

April 7, 2021

Re: Whats the easiest/cheapest way to run a Pharo web app in 2021?

by Tim Mackinnon

Thought it might be useful for anyone who has read Pabloâs blog post - this is a comment that I have tried to add (hopefully it will come through there): Nice article which was very helpful in getting me quickly up to speed on deploying a Pharo app with Docker. It might be worth adding a small addendum - when build doing a "docker build" I had some issues, and adding an additional switch "--progress=plain" gives much more verbose output that can help better see whats going on. I also feel its quite important to call out that the "eval 'Metacello new..." command referenced in the DockerFile RUN - is only going to work on a public repository. This had me stumped when I tried the example on my repository - and its made particularly mysterious because the Docker output (even with --progress=plain) shows nothing - it just echo's the VM info text and then stops and hangs. I think this is something that should be addressed either by the BA Docker image (I've reported it as an issue there for now) or by Pharo (in my case it was P8). I am guessing that there is a credentials error/system prompter sitting waiting for user input. I think there should be a way to disable this behaviour somehow - but at the very least it should write something out to stderr so that you know something has happened? Luckily there is an easy fix (for anyone wanting to load their own private project) - rather than using the "eval" command, use the "st" command and specify a load.st script. In this script specify some IceCredentialStore details eg: IceCredentialStore current storeCredential: (IceTokenCredentials new username: 'email(a)mail.com'; token: 'xxxxxxxxxxxxxxx'; yourself) forHostname: 'gitlab.com'. Metacello new baseline: 'myapp'; repository: 'gitlab://me/repo''; onConflict: [ :ex | ex useLoaded ]; onUpgradeUseLoaded; onWarningLog; load. Hopefully this might help anyone else directed here. I also added some extra logging to my load.st - eg. | logger | logger := Stdio stderr. logger crlf; nextPutAll: 'Starting Load Script...'. Tim > On 6 Apr 2021, at 18:09, Tim Mackinnon <tim(a)testit.works> wrote: > > Adding some thoughts to my own post - I have experimented with dockerize.io <http://dockerize.io/> and so far the $2 plan (which so far I haven't been charged for) has been quite adequate for hosting something simple (and I suspect the $5 plan would do the trick as well). > > It does get a bit more pricey when you add a database and unlimited traffic (60GB MySQL Database: 4GB, 1000m + no traffic + 60GB persistance + 100 mb logs = $26/m) - but even then thats pretty good. > > It was relatively easy to do (doesn't have native Github integration yet, but has a cli for easy deployment) , and given what Esteban mentioned of his experience - this seems worth pursuing for ease of deployment/maintenance. > > I did find Pablo's instructions were a bit limited - in particular covering a private repo (and how Pharo and the BA docker image give no output on credential failure - I've raised an issue on BA github, but may be a pharo thing - not yet sure - but it is quite easy to overcome). It also doesn't cover safe credential storage and best practices etc. (so hopefully a future article from someone more experienced in this?) > > I'm curious if others have experienced anything similar they can share? I am a bit nervous the dockerize.io <http://dockerize.io/> has little history (been around since 2019 allegedly) - but for my experimentation its fine. Others may need more, and I'm wondering where to help document this as deployment is a big stumbling block - that we actually can handle quite well with recent tooling. > > In this vein - I wonder where SmalltalkCI sits? Do you need it for a plain Pharo app - you just need to grep the output of Metacello and your test runner - but perhaps it does this better (I can see the need for building multiple platforms etc). > > Tim > > > > On Fri, 2 Apr 2021, at 10:32 AM, Tim Mackinnon wrote: >> Thanks Sanjay - you have reminded me that I have some similar notes somewhere (now located) that did the command line foo to get things running - looking at mine there was quite a big of dance to provide a way to gracefully stop and start the image so that you can easily and automatically redeploy your changes (read: use Github actions or Gitlab CI). >> >> So Iâm curious on whether Docker is now sufficiently stable stable/easy/cheap to make it a viable alternative - and whether that is also cost efficient. >> >> Pablo wrote a recent blog post on running Pharo in Docker using the BA images - https://thepharo.dev/2021/02/24/running-pharo-9-in-docker/ <https://thepharo.dev/2021/02/24/running-pharo-9-in-docker/> - but while easy on the surface, if anything goes wrong - there seems to be very little debug output to know what has happened (Iâll post separately on this - as Iâm looking at comparing options here). >> >> With Docker options, I notice that dockerize.io <http://dockerize.io/> (not used, just a quick search) - has a micro plan for $2/m - but is 500mb ram enough (there is a $5 one for 1gm ram). >> >> Or - I stick with DigitalOcean and roll my own like before - and perhaps that has got a bit simpler. >> >> Iâm still curious what the wider community is doing. >> >> >> Tim >> >>> On 2 Apr 2021, at 05:43, Sanjay Minni <sm(a)planage.com <mailto:sm@planage.com>> wrote: >>> >>> Hi Tim >>> >>> Here are my notes on installing Pharo in a DigitalOcean Ubuntu droplet. >>> I usually go thru a Windows Command prompt box having installed xfec4 in the ubuntu droplet, but the command line connect and graphical remote may be easier for a Linux users. my ssh public key is also in the DO droplet >>> Now the first step for me is a installing Pharo launcher thru command line and then everything is thru graphical interface >>> >>> Installing and checking Pharo-Launcher, Installing Pharo 8 64 bit from pharo.org <http://pharo.org/> (instructions as on Pharo.org <http://pharo.org/>) >>> 1. In Windows 10 command prompt connect thru > ssh root@<Droplet-ip> >>> 2. cd >>> 3. curl -o pharo-launcher.zip -L https://files.pharo.org/pharo-launcher/linux64 <https://files.pharo.org/pharo-launcher/linux64> >>> 4. unzip pharo-launcher.zip >>> or thru the GUI-> extract here >>> (pharo-launcher files will be extracted in ./pharo-launcher) >>> Now while connected to the linux graphical interface thru windows remote terminal and in the GUI >>> 5. Create a icon on desktop thru right-click âCreate Launcherâ for pharo-launcher >>> 6. Create pharo images thru pharo-launcher >>> >>> hope this is of use >>> >>> Sanjay Minni >>> >>> On Thu, 1 Apr 2021 at 16:31, Tim Mackinnon <tim(a)testit.works <mailto:tim@testit.works>> wrote: >>> Hi everyone - its been a few year since I last hosted a little Pharo web app - and the last time I did, Sven pointed me to DigitalOcean and creating a tiny instance and configuring an Ubuntu server and then copying a pharo image on to that. It recall it wasnât too bad, albeit a bit fiddlyâ¦ >>> >>> Now several years later - I canât recall the exact steps, and vaguely recall there was something about 32bit vs 64bit setup etc - but am wondering if things have advanced a bit and whether its much simpler these days? Iâve seen references to Docker images for Pharo, and am wondering if now that is a prime time way to easily get a small demo application up and running with minimal fuss. >>> >>> Does anyone have advice - or something to point me to? >>> >>> Ideally I want to hook something up in Gitlab CI do deploy to this thing automatically (this is where I got to a few years ago - but in picking things back up I am hoping this has all got much simpler). >>> >>> Tim

April 7, 2021

Re: Help Needed: Looking for projects to use in a study of transforming deprecations

by Richard O'Keefe

This sounds like a very nice tool. Just a word about this particular example: Collection >> includesAllOf: values self deprecated: âUse #includesAll: insteadâ transformWith: â`@rec includesAllOf: `@argâ -> â`@rec includesAll: `@argâ. ^ self includesAll: values Surely this is back to front? #includesAllOf: reads well and is compatible with GNU Smalltalk (and classic Squeak), while #includesAll: doesn't work in most of the Smalltalks I have access to. My own library has {includes,excludes}{All,Any,None,One}Of: which wouldn't read nearly so well without "Of". On Wed, 7 Apr 2021 at 00:50, Oleksandr Zaitsev <olk.zaytsev(a)gmail.com> wrote: > Hello, > > I need your help to recommend some projects that I can use in my study of > transforming deprecations. > > As many of you know, Pharo supports a very powerful concept of > "transforming" deprecations. You can deprecate a method, providing a > transformation rule. Then when a client application calls the deprecated > method, the call-site will be automatically rewritten to use the new API. > Here is an example of a transforming deprecation: > > Collection >> includesAllOf: values > self > deprecated: âUse #includesAll: insteadâ > transformWith: â`@rec includesAllOf: `@argâ -> > â`@rec includesAll: `@argâ. > > ^ self includesAll: values > > > You can read more about transforming deprecations in my blog post: > https://blog.oleks.fr/deprewriter > > I am working on a tool that can analyse the commit history of a project > and recommend deprecations and transformation rules that can be inserted > before the release. It works like this: > > 1. Collect all commits between two releases of a project > 2. Mine those commits to identify method call replacements (deletions and > additions) that happen frequently > 3. Infer the mapping between the methods of the old and new API > 4. Recommend deprecations and generate transformation rules > > I have validated my approach on Pharo, Moose, Pillar, Famix, and DataFrame > projects. > > Now I am looking for other projects that could benefit from recommended > deprecations and could be used in my study. > > *Required:* > - open source project with accessible commit history (e.g. public git > repository) > - written in Pharo (although if you know projects in other languages that > could be interesting for my study, please let me know about them as well) > > *Prefered:* > - ongoing development > - multiple releases > - has users (other projects that depend on it) > > If you have some projects in mind, please let me know about them! > > And if you are interested in this study and want to learn more, don't > hesitate to contact me by email. > > Oleksandr > > >

April 6, 2021