Practicing some Nix coding by doing a previous Advent of Code.

My series on Nix programming basics: https://www.youtube.com/playlist?list=PL-oJWTgK9N6_tJ751N-TvhcF0aPu39zEY Github for this code: https://github.com/ellyxir/advent_of_code.git Advent of code: https://adventofcode.com/2019/day/1

Documentation: Nix builtins: https://nix.dev/manual/nix/2.18/language/builtins nixpkgs library: https://nixos.org/manual/nixpkgs/stable/#id-1.4

Donations are welcome at: https://ko-fi.com/ellyse7777