nix build .#hello
nix build .#pkgsi686Linux.hello
nom build .#legacyPackages.x86_64-linux.pkgsCross.aarch64-multiplatform.hello
nix run --impure --expr '(builtins.getFlake "github:nixos/nixpkgs/nixpkgs-unstable").legacyPackages."${builtins.currentSystem}".discord.override {withVencord = true;}'
Build NixOS manual for NixOS module PRs: