In case it is useful, the following thornlist downloads and installs only the components that are necessary to run the TOV test (and also a Riemann problem) with GRHydro:
https://raw.githubusercontent.com/bgiacoma/notebooks/main/Einstein_Toolkit_Tutorials/TOV_Sod.th

Instructions are also available in the README file here: https://github.com/bgiacoma/notebooks/tree/main/Einstein_Toolkit_Tutorials

I made this for my master's course in Numerical Relativity. The thornlist was built using Cactus/utils/Scripts/MakeThornList
I also made some small changes to the thornlist produced by the script in order to completely remove repositories from which nothing was checked out. I did this to avoid the GetComponents warning that nothing was checked out from some repositories.

Cheers,
Bruno

--

Prof. Bruno Giacomazzo
Department of Physics
University of Milano-Bicocca
Piazza della Scienza 3
20126 Milano
Italy

email: bruno.giacomazzo@unimib.it
phone: (+39) 02 6448 2321

web: http://www.brunogiacomazzo.org

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