Re: [Zope] ExtFile/ExtImage compatibility with Zope 4/5?

2021-03-30 Thread Jürgen Gmach 
Hi Jesús,

> I am getting ready to migrate to Zope 4, and checking products I depends
> massively on ExtFile/ExtImage. I wonder about the support of that
> product or something similar.

I also inherited a Zope app, and successfully migrated it to Zope 4/5.

I guess I do not have to tell you the general way how to migrate an app to 
Python 3 (pyupgrade, six...).

So, some Zope specifics.

Zope 4 is a transition version, between Zope 2 (Python 2) and Zope 5 (Python 
3), as Zope 4 both supports Python 2 and 3.

As you already did, it is important to catalog all your used plugins and check 
whether they are still supported, can be replaced by core functionality or 
another plugin, or even need to be ported to Zope 4.

My inherited legacy app even had two similar plugins to your ExtFile one, 
namely ExternalFile and LocalFS - both have no successors.

I could replace LocalFS entirely with Zope core functionality, in this case 
with resourceDirectory ( 
https://docs.plone.org/adapt-and-extend/theming/templates_css/resourcefolders.html
 ).

ExternalFile was rewritten from scratch, and now is only like 20 lines, which 
read a file from the file system and just return it to the browser.

So, no clue whether one or the other solution would fit your usecase.


When you want to work on the migration yourself, have a look at the docs...

https://zope.readthedocs.io/en/latest/migrations/zope4/index.html#

Generally, it is best to upgrade to the latest version 2 of Zope, first, before 
trying to update to Zope 4.

Michael, one of the core maintainers, gave a talk at EuroPython about a 
successful Zope migraton: https://www.youtube.com/watch?v=O-xSmvQwPHY

https://community.plone.org
Just for completion, if you need commercial support, you can post here: 
https://community.plone.org/c/jobs/38


And as already mentioned, https://community.plone.org is a good place to ask 
questions. This mailing list is super low volume.

Best,
Jürgen
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Re: [Zope] ExtFile/ExtImage compatibility with Zope 4/5?

2021-03-30 Thread Jens Vagelpohl 
Hi Jesus,

> On 29. Mar 2021, at 19:45 , Jesus Cea  wrote:
> 
> On 29/3/21 18:04, Jens Vagelpohl wrote:
>> I don’t know anything about ExtFile/ExtImage specifically, the only 
>> reference I was able to find is from old.zope.org and no one has touched it 
>> since 2007. It looks like there is no support.
> 
> Now the problem is... licensing. The project seems dead for 15 years but I 
> don't see a license files in . The 
> readme says ZPL, but not version is listed. Is ZPL still a thing?
> 
> The original old code in  
> seems to have a MIT-like license.

The last release (2.0.2) claims that the license is a ZPL, which is definitely 
“still a thing”. All 350+ packages in the zopefoundation GitHub organization 
are licensed under the ZPL, which is still an OSI-certified open source 
license. The current version is 2.1.

The main issue I see in ExtFile is the lack of documentation how the license 
and copyright switch was done. In order to be considered for inclusion in the 
zopefoundation organization projects - if that’s your goal - some proof like a 
written statement of agreement to the license and copyright change from Gregor 
would be mandatory, and then written proof that Stefan Holek agrees to transfer 
copyright to the Plone Foundation. The rest, like the lack of an actual license 
file, is cosmetics and easily fixed.

If those hurdles are too high no one can prevent you from creating a private 
fork and distributing it yourself, as long as you abide by the existing 
copyright and licensing provisions.

jens




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Re: [Zope] ExtFile/ExtImage compatibility with Zope 4/5?

2021-03-29 Thread Jesus Cea 

On 29/3/21 18:04, Jens Vagelpohl wrote:

I don’t know anything about ExtFile/ExtImage specifically, the only reference I 
was able to find is from old.zope.org and no one has touched it since 2007. It 
looks like there is no support.


Now the problem is... licensing. The project seems dead for 15 years but 
I don't see a license files in 
. The readme says ZPL, but 
not version is listed. Is ZPL still a thing?


The original old code in 
 seems to have a 
MIT-like license.



The product will need to be repackaged as an egg or wheel first, otherwise you 
won’t be able to start any real compatibility testing. Zope 4 does not allow 
you to just unzip a product inside a products folder anymore

Most products only need minor modifications once they are repackaged. How to do 
this repackaging is a general Python packaging question, I suggest you just 
look at Zope products that are compatible, e.g. 
https://github.com/zopefoundation/Products.PluginRegistry, to get an idea.


That is useful. Thanks.


Zope products are hosted where all other Python packages are hosted: pypi.org.


Understood.

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_/_/_/

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Re: [Zope] ExtFile/ExtImage compatibility with Zope 4/5?

2021-03-29 Thread Jens Vagelpohl 


> On 29. Mar 2021, at 17:52 , Jürgen Gmach  wrote:
> 
> 
> Most Zope plugins are hosted now at https://github.com/zopefoundation


To prevent confusion: Code and collaboration tools for development are hosted 
on github.com. The installable packages are hosted on pypi.org.

jens




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Re: [Zope] ExtFile/ExtImage compatibility with Zope 4/5?

2021-03-29 Thread Jens Vagelpohl 
Hi Jesus,

I don’t know anything about ExtFile/ExtImage specifically, the only reference I 
was able to find is from old.zope.org and no one has touched it since 2007. It 
looks like there is no support.

The product will need to be repackaged as an egg or wheel first, otherwise you 
won’t be able to start any real compatibility testing. Zope 4 does not allow 
you to just unzip a product inside a products folder anymore.

Most products only need minor modifications once they are repackaged. How to do 
this repackaging is a general Python packaging question, I suggest you just 
look at Zope products that are compatible, e.g. 
https://github.com/zopefoundation/Products.PluginRegistry, to get an idea.

Zope products are hosted where all other Python packages are hosted: pypi.org.

jens


> On 29. Mar 2021, at 17:04 , Jesus Cea  wrote:
> 
> Signed PGP part
> I am getting ready to migrate to Zope 4, and checking products I depends 
> massively on ExtFile/ExtImage. I wonder about the support of that product or 
> something similar.
> 
> Where are third-party Zope products hosted nowadays?
> 
> If this product is not supported/abandoned in Zope 4/5, would be people 
> interested in a fork maintained by me?
> 
> Could I ask here questions about "the modern way" of writing products for 
> current Zope? If not, who/where should I ask?
> 
> Thanks.
> 
> --
> Jesús Cea Avión _/_/  _/_/_/_/_/_/
> j...@jcea.es - https://www.jcea.es/_/_/_/_/  _/_/_/_/  _/_/
> Twitter: @jcea_/_/_/_/  _/_/_/_/_/
> jabber / xmpp:j...@jabber.org  _/_/  _/_/_/_/  _/_/  _/_/
> "Things are not so easy"  _/_/  _/_/_/_/  _/_/_/_/  _/_/
> "My name is Dump, Core Dump"   _/_/_/_/_/_/  _/_/  _/_/
> "El amor es poner tu felicidad en la felicidad de otro" - Leibniz
> 
> 
> 



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Re: [Zope] ExtFile/ExtImage compatibility with Zope 4/5?

2021-03-29 Thread Jürgen Gmach 
Hey Jesus,

I will write a more extensive e-mail tomorrow, but as a starter...

Most Zope plugins are hosted now at https://github.com/zopefoundation

The best place to ask questions about Zope is the discussion board at 
https://community.plone.org/

Best,
Jürgen



Von: Zope  im Auftrag von Jesus Cea 
Gesendet: Montag, 29. März 2021 17:04
An: zope@zope.org Users 
Betreff: [Zope] ExtFile/ExtImage compatibility with Zope 4/5?

I am getting ready to migrate to Zope 4, and checking products I depends
massively on ExtFile/ExtImage. I wonder about the support of that
product or something similar.

Where are third-party Zope products hosted nowadays?

If this product is not supported/abandoned in Zope 4/5, would be people
interested in a fork maintained by me?

Could I ask here questions about "the modern way" of writing products
for current Zope? If not, who/where should I ask?

Thanks.

--
Jesús Cea Avión _/_/  _/_/_/_/_/_/
j...@jcea.es - https://www.jcea.es/_/_/_/_/  _/_/_/_/  _/_/
Twitter: @jcea_/_/_/_/  _/_/_/_/_/
jabber / xmpp:j...@jabber.org  _/_/  _/_/_/_/  _/_/  _/_/
"Things are not so easy"  _/_/  _/_/_/_/  _/_/_/_/  _/_/
"My name is Dump, Core Dump"   _/_/_/_/_/_/  _/_/  _/_/
"El amor es poner tu felicidad en la felicidad de otro" - Leibniz

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[Zope] ExtFile/ExtImage compatibility with Zope 4/5?

2021-03-29 Thread Jesus Cea 
I am getting ready to migrate to Zope 4, and checking products I depends 
massively on ExtFile/ExtImage. I wonder about the support of that 
product or something similar.


Where are third-party Zope products hosted nowadays?

If this product is not supported/abandoned in Zope 4/5, would be people 
interested in a fork maintained by me?


Could I ask here questions about "the modern way" of writing products 
for current Zope? If not, who/where should I ask?


Thanks.

--
Jesús Cea Avión _/_/  _/_/_/_/_/_/
j...@jcea.es - https://www.jcea.es/_/_/_/_/  _/_/_/_/  _/_/
Twitter: @jcea_/_/_/_/  _/_/_/_/_/
jabber / xmpp:j...@jabber.org  _/_/  _/_/_/_/  _/_/  _/_/
"Things are not so easy"  _/_/  _/_/_/_/  _/_/_/_/  _/_/
"My name is Dump, Core Dump"   _/_/_/_/_/_/  _/_/  _/_/
"El amor es poner tu felicidad en la felicidad de otro" - Leibniz



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