> tex is written in pascal;

Just thought about that when Donald Knuth's Christmas lecture https://www.youtube.com/live/622iPkJfYrI lead me to one of his first TeX lectures https://youtu.be/jbrMBOF61e0 : If I install TeX on my Linux machine now, is that still compiled from the original Pascal source? Is there even a maintained Pascal compiler anymore? Well, GCC (as in GNU compiler collection) probably has a frontend, but that still does not answer the question about maintenance.

These were just thoughts. Of course researching the answers would not be overly complicated.