Thanks all for your kind words and encouragements!
Doru, you're right it has been made possible only because a lot of people took 
care to clean Pharo time after time*. By example, bootstraping Pharo 2.0 would 
have been a lot more pain!
We can also thanks Pavel for the work he did / does on the minimal image that 
goes into the same direction.

Cheers,
Christophe

* boy scouts rule: Leave the campground cleaner than you found it.

Le 19 janv. 2016 à 18:10, Tudor Girba a écrit :

> This is amazing news!
> 
> For those that might be less involved in this, the minimal image is a long 
> term goal that is essentially in the works since the beginning of Pharo. It 
> accumulated a ton of effort from multiple people (I did not participate, but 
> I have an idea of the amount of effort and it really is huge and tedious), 
> and now we see the first palpable result. This is one of those things that 
> have almost no visible output, but will turn out to have a tremendous impact.
> 
> I would like to thank everyone involved! Please do keep this up. Even if it 
> might look less rewarding, you should know that this work is greatly 
> appreciated.
> 
> Cheers,
> Doru
> 
> 
>> On Jan 19, 2016, at 3:29 PM, Christophe Demarey 
>> <[email protected]> wrote:
>> 
>> Hi all,
>> 
>> In case you do not know, we work on bootstrapping Pharo, i.e. create a Pharo 
>> image from sources, not based on a previous image (well, we use a pharo 
>> image to produce it but no code / state from it).
>> 
>> This process will allow to define a minimal Pharo kernel (currently 52 
>> packages but we could have it far smaller) and to modularize the whole image 
>> (currently packages have too much dependencies on packages already loaded 
>> into the image).
>> The bootstrap process also allows to write down the recipe to initialize a 
>> new image from scratch (some code is missing in the image or is wrong). In 
>> addition, I think we will clean a lot of historical objects that are not 
>> used anymore.
>> 
>> With the amazing work done by Guillermo Polito during his Phd (around 
>> Espell, Oz): https://guillep.github.io/files/publications/Poli15Thesis.pdf, 
>> we succeeded to get a first prototype of a bootstraped Pharo 5 image (from 
>> 5.392).
>> This prototype is able to run an eval command line handler and to log output 
>> / errors. Not all classes are yet initialized and you cannot yet save / 
>> restart this image but it is a big step forward.
>> It is a 4 mb image (could be half the size without unicode data). You can 
>> download it at: 
>> http://chercheurs.lille.inria.fr/~demarey/pmwiki/pub/pharo-bootstrap/pharo-bootstrap.zip.
>> 
>> Next steps are to have a bootstrapped image fully working, then to load 
>> packages on top of it (like network, sunit) to produce a minimal image.
>> Then, we need to implement an Oz VM on top of Spur.
>> After that, we need to work on a reliable way to build the bootstrap (not 
>> too sensitive to changes in the image).
>> 
>> Christophe.
>> 
>> -------
>> demarey@193-51-236-143:~/dev/rmod/bootstrap/bootstrap-2016-01-19$ ../pharo 
>> bootstrap.image --no-default-preferences eval "1 + 1"
>> 2
>> demarey@193-51-236-143:~/dev/rmod/bootstrap/bootstrap-2016-01-19$ ../pharo 
>> bootstrap.image --no-default-preferences eval "'a' , 'b'"
>> 'ab'
>> demarey@193-51-236-143:~/dev/rmod/bootstrap/bootstrap-2016-01-19$ ../pharo 
>> bootstrap.image --no-default-preferences eval "1 / 0"
>> ZeroDivide
>> SmallInteger>>/
>> UndefinedObject>>DoIt
>> OpalCompiler>>evaluate
>> OpalCompiler(AbstractCompiler)>>evaluate:
>> SmalltalkImage>>evaluate:
>> 
>> EvaluateCommandLineHandler>>no (source is Undeclared) 
>> no source in EvaluateCommandLineHandler>>evaluate: in Block: no source
>> BlockClosure>>on:do:
>> EvaluateCommandLineHandler>>evaluate:
>> EvaluateCommandLineHandler>>evaluateArguments
>> EvaluateCommandLineHandler>>activate
>> EvaluateCommandLineHandler class(CommandLineHandler class)>>activateWith:
>> 
>> BasicCommandLineHandler>>no (source is Undeclared) 
>> no source in 
>> PharoCommandLineHandler(BasicCommandLineHandler)>>activateSubCommand: in 
>> Block: no source
>> BlockClosure>>on:do:
>> PharoCommandLineHandler(BasicCommandLineHandler)>>activateSubCommand:
>> PharoCommandLineHandler(BasicCommandLineHandler)>>handleSubcommand
>> PharoCommandLineHandler(BasicCommandLineHandler)>>handleArgument:
>> 
>> BasicCommandLineHandler>>no (source is Undeclared) 
>> no source in PharoCommandLineHandler(BasicCommandLineHandler)>>activate in 
>> Block: no source
>> BlockClosure>>on:do:
>> PharoCommandLineHandler(BasicCommandLineHandler)>>activate
>> PharoCommandLineHandler>>activate
>> PharoCommandLineHandler class(CommandLineHandler class)>>activateWith:
>> 
>> PharoCommandLineHandler class>>no (source is Undeclared) 
>> no source in PharoCommandLineHandler class>>activateWith: in Block: no source
>> NonInteractiveUIManager(UIManager)>>defer:
>> PharoCommandLineHandler class>>activateWith:
>> no source in BasicCommandLineHandler>>activateSubCommand: in Block: no source
>> BlockClosure>>on:do:
>> BasicCommandLineHandler>>activateSubCommand:
>> BasicCommandLineHandler>>handleSubcommand
>> BasicCommandLineHandler>>handleArgument:
>> no source in BasicCommandLineHandler>>activate in Block: no source
>> 
>> SmallInteger>>no (source is Undeclared) 
>> 
>> UndefinedObject>>no (source is Undeclared) 
>> 
>> AbstractCompiler>>no (source is Undeclared) 
>> 
>> SmalltalkImage>>no (source is Undeclared) 
>> 
>> BlockClosure>>no (source is Undeclared) 
>> 
>> EvaluateCommandLineHandler>>no (source is Undeclared) 
>> 
>> EvaluateCommandLineHandler>>no (source is Undeclared) 
>> 
>> CommandLineHandler class>>no (source is Undeclared) 
>> 
>> BasicCommandLineHandler>>no (source is Undeclared) 
>> 
>> BasicCommandLineHandler>>no (source is Undeclared) 
>> 
>> PharoCommandLineHandler>>no (source is Undeclared) 
>> 
>> UIManager>>no (source is Undeclared) 
>> 
>> UndefinedObject>>no (source is Undeclared) 
>> 
>> CommandLineUIManager>>no (source is Undeclared) 
>> 
>> SmalltalkImage>>no (source is Undeclared) 
>> 
>> DelayMicrosecondScheduler>>no (source is Undeclared) 
>> 
>> BlockClosure>>no (source is Undeclared) 
>> 
>> SmalltalkImage>>no (source is Undeclared) 
>> 
>> WeakArray class>>no (source is Undeclared) 
>> 
>> 
>> ps: source cannot be displayed because there is no formatter available in 
>> the bootstrap
>> 
> 
> --
> www.tudorgirba.com
> www.feenk.com
> 
> "It's not what we do that matters most, it's how we do it."
> 
> 

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