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I support Julien Puydt <julien.puydt@laposte.net> (key
812EEFD8A3FBA4ACE4DF114B04C53BD7FE030551)'s request to become Debian Developer.
I have worked with him for over one year now, and I know he can be trusted to
be a full member of Debian, and have unsupervised, unrestricted upload rights,
right now.

I know Julien through working on the SageMath packaging team. This is a project
that has spanned many years, which I joined a year ago. Julien did a lot of the
foundational work for it, and continues to be a critical part of the effort
today. It has over 180 build-dependencies, and Julien was the original builder
of much of the infrastructure that we're using to manage these. He is familiar
with the details of individual packages, including the core dependency packages
such as the Jupyter notebook packages and other Debian Science packages. Both
individually and together with the rest of the team, he has / we have solved
many debugging issues and uploaded new packages as required. I've sponsored and
reviewed some of these, and cannot remember anything missing or unclean that I
had to spend time fixing.

Furthermore, Julien is communicative and responsive - when I first joined the
SageMath team and was just learning about it, he helped me understand a lot of
the major issues, upstream's development practises, and the remaining Debian
work. Thank you!
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