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This problem has been fixed by a paclet update, which can be installed by evaluating PacletSiteUpdate /@ PacletSites[]; PacletInstall["CURLLink"] and restarting Mathematica. More details about the underlying cause of the bug can be...
Mathematica 12.1 was ready and being downloaded when the blog post appeared. There are other products in the pipeline like WolframEngine or the localized versions that usually take a few additional days to go through final testing.
Maybe In[4]:= Replace[#, head_[__] :> head, 1] & /@ Level[test, {-Infinity, -2}] Out[4]= {e[g, h], b[e, f], a[b, c, d]}
Try setting the SystemIDList environment variable, for example SystemIDList=Linux-ARM wolframscript -code 2+2
Yes, RLink is not available in the Raspberry Pi version.
Look under Window -> Preferences -> Wolfram ![enter image description here][1] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=wwb.png&userId=21039
The entire OS crashing may be a sign of hardware instability so the actual Eigenvalues computation might only matter as far as pushing the hardware by doing intensive computation on multiple threads. My recommendation would be to run a hardware...
I don't think it is that bad, though of course I still remember when it used to be 0.01
> There is no MinGW for macOS. Technically there is (for cross-compiling), but that is not really relevant for OP's problem.
The entire RPi rebooting is likely due to hardware instability. Possible things to look at would be the power supply voltage and/or CPU temperature.