Control: forwarded -1 https://github.com/astro-informatics/purify/issues/290
I am afraid that I am unable to fix this: the Debian version of purify
uses a patched version of Eigen3, and since the patch still succeeds
(with some offsets) I assume that it is not applied upstream yet.
There is a newer upstream version 3.0.1 of purify (which doesn't require
the patch); however this doesn't compile for me as well -- with the same
error as you see now. There are other compilation errors which I saw
with earlier versions of purify.
These errors were reported upstream already two years ago in
https://github.com/astro-informatics/purify/issues/290
and I also reported some test failures; however without response. The
last commit in the repository was on May 2021.
Unless the communication with upstream improves, we probably don't get
this fixed (except you have an idea yourself).
Best
Ole
