Add and simplify nix usage bullet points on the front page.

Author: wamirez

source/index.md

@@ -55,20 +55,21 @@ Explanations of history and ideas in the Nix ecosystem
 The following list illustrates some of what can be achieved with the Nix ecosystem:
 
 - {ref}`Reproducible development environments <ad-hoc-envs>`.
-- Easy installation of software over URLs.
+- {ref}`Standalone program execution <ad-hoc-envs>`.
+- Easy installation of software over URLs and from source code.
 - Easy transfer of software environments between computers.
 - {ref}`Declarative specification of Linux machines <deploy-nixos-using-terraform>`.
 - {ref}`Reproducible integration testing using virtual machines <integration-testing-vms>`.
+- {ref}`Deployment of services to machines running NixOS <nixos-vms>`.
+- {ref}`Utilization of libraries and tools to build software with Nixpkgs <packaging-tutorial>`.
 - Avoidance of version conflicts with already installed software.
-- Installing software from source code.
 - {ref}`Transparent build caching using binary caches <github-actions>`.
 - Strong support for software auditability.
 - {ref}`First-class cross compilation support <cross-compilation>`.
 - Remote builds.
 - Remote deployments.
 - Atomic upgrades and rollbacks.
 
-
 ## Who is Nix for?
 
 Nix is a tool for people who both need computers to do exactly as intended, repeatably, far into the future, and who are familiar with command line interfaces and plain text editors.