Add shell.nix for NixOS users

1 files changed, 9 insertions, 1 deletions

diff --git a/docs/getting_started_build_tools.md b/docs/getting_started_build_tools.md
index 10c0b6984..0617252b2 100644
--- a/docs/getting_started_build_tools.md
+++ b/docs/getting_started_build_tools.md
@@ -36,7 +36,15 @@ Debian/Ubuntu example:
     sudo apt-get update
     sudo apt-get install gcc unzip wget zip gcc-avr binutils-avr avr-libc dfu-programmer dfu-util gcc-arm-none-eabi binutils-arm-none-eabi libnewlib-arm-none-eabi
 
-# Mac
+## Nix
+
+If you're on [NixOS](https://nixos.org/), or have Nix installed on Linux or macOS, run `nix-shell` from the repository root to get a build environment.
+
+By default, this will download compilers for both AVR and ARM. If you don't need both, disable the `avr` or `arm` arguments, e.g.:
+
+    nix-shell --arg arm false
+
+## Mac
 If you're using [homebrew,](http://brew.sh/) you can use the following commands:
 
     brew tap osx-cross/avr