Trying to follow the building guide on https://testnets.cardano.org/en/shelley/get-started/installing-and-running-the-cardano-node/building-the-node-from-source/
Haskell 8.6.5. appears to have installed but Im hitting a wall with making cabal-install 18.104.22.168. OS is Ubuntu 20.04 and as there is no available cabal-install 22.214.171.124. for aarch64, I am trying to compile cabal-install locally. The README.md says to use ./bootstrap.sh, but this fails to detect llvm 6, however I have both llvm-6.0 and llvm-6.0-dev insalled from apt.
The preferred nix installation also fails, the nix installer appears to complete but on trying to open a nix shell there are files that have not generated.
I appreciate this is not Cardano specific, but getting the Haskell environment completed is a requirement for node building, so hope someone can help.