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;}'
Run package-internal tests with nix-build --attr pkgs.PACKAGE.passthru.tests
Run NixOS tests with nix-build --attr nixosTests.NAME, where NAME is the name of the test listed in nixos/tests/all-tests.nix
Run global package tests with nix-build --attr tests.PACKAGE, where PACKAGE is the name of the test listed in pkgs/test/default.nix