pass use_cholmod to the outside

[m-reuter]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 48.12%. Comparing base (b705a60) to head (2f51cb9).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #111   +/-   ##
=======================================
  Coverage   48.12%   48.12%           
=======================================
  Files          15       15           
  Lines        2851     2851           
  Branches      363      363           
=======================================
  Hits         1372     1372           
  Misses       1357     1357           
  Partials      122      122           

Flag	Coverage Δ
unittests	48.12% <100.00%> (ø)

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