> On 18 Apr 2019, at 13:08, PBKResearch <[email protected]> wrote:
> 
> +1 to Norbert. In particular, does it mean that, from Pharo 8, we will be 
> *required* to install Gtk3 backend to use Pharo?

For now is in early development so there is no easy way to install (since there 
are things to replace/fix in current image). 
We will provide an install script soon (or maybe a prepared image, while we 
arrive to have a reliable baseline).

And no, you will not need it. Gtk3 bindings are an extra. If you want to do a 
desktop application (for example Schmidt is doing it), maybe you will want to 
install it. Otherwise you will continue as before.

And to be clear: Pharo 8 WILL NOT be a Gtk3 application. 
Even if eventually the IDE will be able to run with it (since it will be a Spec 
2.0 based IDE), there are a lot of huge things that need to be migrated before 
(and the GTInspector is not big: Calypso is).
And still then (maybe in Pharo 9), running with Gtk3 will be a choice.

Esteban

>  
> Peter Kenny
>  
> From: Pharo-users <[email protected]> On Behalf Of Norbert 
> Hartl
> Sent: 18 April 2019 11:58
> To: Pharo users users <[email protected]>
> Cc: Pharo Dev <[email protected]>
> Subject: Re: [Pharo-users] [ANN] (Re)Introducing Mars (Spec 2.0 Gtk3 bindings)
>  
> Great!
>  
> Can you explain what is there, what somebody can load and what to expect. And 
> even more important: what not to expect?
>  
> I don’t get any of the essential details from this mail.
>  
> Norbert
>  
>  
> 
>> Am 18.04.2019 um 12:08 schrieb Esteban Lorenzano <[email protected] 
>> <mailto:[email protected]>>:
>>  
>> People that assisted to Pharo Days 2019 (or that follow my twitter account) 
>> already know this, but it needs to be formally announced: 
>>  
>> 
>> We are working on Spec 2.0, and it will provide not just the classic Morphic 
>> bindings but also a new option for developers: Gtk3 bindings!
>>  
>> Why we want a Spec 2.0 with different backends?
>>  
>> There are reasons that converged to decide us to make it:
>>  
>> First, to provide a validated abstract Spec 2.0 that can be used with 
>> different backends, preparing Pharo to be able to switch backends without 
>> needing to recreate the full IDE from scratch each time (a problem we have 
>> partially now in our way to deprecate Morphic).
>> Second, because we receive from different sources the requirement of having 
>> the possibility of developing real native-looking desktop applications. Yes, 
>> in moment where people talk about the cloud, SaaS and web-applications as 
>> the "next big thing" (something that is been declared since years, by the 
>> way), we believe is important to provide this, for two big reasons: 
>> Because there is still an important place for desktop applications market 
>> and most medium-size to big business still require them.
>> Because Pharo itself is a desktop application! (And we need to provide the 
>> best experience possible on it).
>>  
>> For us, this is a fundamental step to continue improving Pharo itself, and 
>> it matches also the work we are doing on going real-headless:  Pharo users 
>> will be able to start the Morphic world, a Gtk application or the next 
>> backend to come.
>>  
>> Why Gtk3?
>>  
>> There are some other important players in the "native widgets scene", so why 
>> we choose Gtk3? 
>>  
>> Again, several reasons  were taken into account: 
>>  
>> Gtk3 is cross platform. Yes, technically is just "native" in linux, but it 
>> works on Windows and macOS too. 
>> It is very mature and popular.
>> It is made in plain C.
>>  
>> Next step: tool migration
>>  
>> The only way to know if you have covered what is needed is actually taking 
>> real-life use cases and implementing them. We have a list of tools that 
>> needs to be migrated and we are starting from them: 
>>  
>> Old GT tools will be replaced by new Spec tools (while preserving its power).
>> Calypso UI needs to be rewritten in Spec 2.0 (it is in plain Morphic now).
>> Pharo launcher as a standalone application is a good example of what you can 
>> do with the Gtk3 bindings.
>>  
>> And that's it. Pharo 8.0 will come with Spec 2.0 and users will be able to 
>> benefit of it immediately :)
>>  
>>  
>> A small screenshot of the new Inspector (WIP): 
>>  
>> <Screenshot 2019-04-18 at 12.07.16.png>
>>  
>> Esteban

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