I did Nand2Tetris during the last Christmas holidays. I only finished the first part - I got it working on Verilog - so I basically have a emulated computer that can run programs in assembly language. Will need to do part 2 as well.
I was actually wondering: are we allowed to publish our work on GitHub? I already have a Github repo but I made it private and only show it to potential employers and individual people who are interested, because I am not very certain about the copyright rules of the HDL skeleton files, and whether we are allowed to publish our work, given Coursera's honor code.
I also implemented Nand2Tetris part 1 in SystemVerilog, have it running on an FPGA and almost completed extending as a toy SoC. I wrote the assembler and UART loader in Rust, but I still need to write the UART FSM that replaces the program in "ROM".
https://github.com/MSamman/hack-soc
Also, if you find TRPL a little slow, Programming Rust goes faster, a bit deeper and I found to be a bit more engaging of a read.