[Vm-dev] Squeak/Pharo VM fork history

[Eliot Miranda]

> On May 18, 2020, at 1:08 AM, Jakob Reschke <forums.jakob at resfarm.de> wrote:
> 
> 
> Pharo VM did not only fork the transpiled C code, they also put the
> Smalltalk VMMaker code in the repository and maintain it there. They
> do not use the VMMaker Monticello repository if I understand
> correctly. So in their repository and workflow, it really is a source
> fork.

+1

>> Am Mo., 18. Mai 2020 um 09:54 Uhr schrieb K K Subbu <kksubbu.ml at gmail.com>:
>> 
>> 
>> On 18/05/20 1:25 am, Eliot Miranda wrote:
>>>>> To clarify about the VM fork: few years ago, the transpiled C
>>>>> source code of the VM, along with the genuine C parts and core
>>>>> plugins, were migrated to GitHub under the common name
>>>>> OpenSmalltalk VM, to be shared by Squeak, Pharo, Cuis, and
>>>>> Newspeak.
>>>> The src directories in opensmalltalk-vm github are just caches -
>>>> meant to avoid transpilation overheads during repeated builds.
>>> No, they are not just caches.  They are also versioned artifacts that
>>> eliminate the possibility that translation at a later time might
>>> produce different results.  They have many advantages other than
>>> this, such as quicker Bude Yoon tor finding bugs, the ability to
>>> build a vm without having a full VMMaker build environment, etc.
>> 
>> Eliot,
>> 
>> That's precisely what I meant by "transpilation overheads". I didn't
>> want to expand on that because I just wanted to point out that VMMaker
>> is the original source and not the github. So copying git files is not
>> really a "source fork". It is a build hack. Any updates to this git
>> outside of transpilation will only be local to a build and will be
>> overwritten by next transpilation.
>> 
>> Regards .. Subbu