Bug#1027215: How much do we lose if we remove theano (+keras, deepnano, invesalius)?

[Nilesh Patra]

On Sat, Jan 14, 2023 at 11:12:07AM +0000, Rebecca N. Palmer wrote:
> theano has been mostly abandoned upstream since 2018.  (The Aesara fork is
> not abandoned, but includes interface changes including the import name, so
> would break reverse dependencies not specifically altered for it.)
> 
> Its reverse dependencies are keras, deepnano and invesalius.

keras is already orphaned, it needs to be updated either now or later.
And it depends heavily on tensorflow, python bindigs of which are still
not in yet.

deepnano is also kind of abandoned. Last commit is from 2017.

On grepping the code for invesalius, I see that it only uses theano as
an option for backend. There are three backends as far as I can see,
torch, plaidml (not in debian) and theano.
So as long as torch works, this _probably_ should do fine here.
In any case, the upstream for this package is active and we can ask
them.

-- 
Best,
Nilesh
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