Comment (by Zach Etienne):

I’ll add comments as I have time.

First off, initial data thorns should depend on *Base thorns, and not any particular evolution thorn. I’m referring to

shares:GRHydro

USES real rho_abs_min
USES real rho_rel_min
USES REAL initial_rho_abs_min
USES REAL initial_rho_rel_min
USES REAL initial_atmosphere_factor
USES real GRHydro_rho_central

within param.ccl . It should be the initial data thorn’s responsibility to set up the atmosphere and set parameters accordingly. For me, the solver wouldn’t even get to the compile stage because I generally comment out GRHydro from my ThornList (naturally I use IllinoisGRMHD).

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2549/inlcude-flrwsolver-in-et