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From Ash Berlin-Taylor <>
Subject Re: [VOTE] Release Apache Liminal (incubating) 0.0.2rc1-INCUBATING
Date Wed, 21 Apr 2021 14:55:14 GMT
Hi Aviem,

Hi everyone, Airflow PMC here.

First off, eek. Not sure how this happened, it's been like this for a while.

I agree -- we could possibly fix the direct dependency on requests/chardet in Airflow, but
as you have already discovered there are many more python libraries that depend upon requests
- docker and kubernetes being the two that are hard to work around!.

(Kubernetes has a _direct_ dep on a lgpl'd dep too) 

I'm writing a post to, as _my_ reading is that depending upon LGPLd library
at runtime only, but not shipping it is "work that uses the Library", and as per clause 5
of the LGPL 2.1 license should be fine

> A program that contains no derivative of any portion of the Library, but is designed
to work with the Library by being compiled or linked with it, is called a "work that uses
the Library". Such a work, in isolation, is not a derivative work of the Library, and therefore
falls outside the scope of this License.

(There are a few caveats to this, so be careful about what else you might do with the code,
such as creating)

We'll see what Legal say about this. 


On 2021/04/21 10:39:58, Aviem Zur <> wrote: 
> We can try to reach out. It looks like `chardet` can't change their license
> and `requests` have a won't fix / no time to fix attitude towards it.
> Meanwhile what do we do regarding releases of our artifacts?
> I don't see how we can develop a python project without having an indirect
> dependency on `requests` package as detailed above.
> On Wed, Apr 21, 2021 at 12:51 PM Justin Mclean <>
> wrote:
> > Hi,
> >
> > Sorry I’m not sure what to suggest. Normally I’d say contact the project
> > and ask if they would be willing to distribute the library under another
> > license e.g. dual license it under LGPL and ALv2 but this seem unlikely
> > [1]. I guess it wouldn't hurt to ask again.
> >
> > Kind Regards,
> > Justin
> >
> >
> > 1.
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