diff --git a/.gitmodules b/.gitmodules
index f1998a7..11a7502 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "modules/sdk"]
 	path = modules/sdk
 	url = https://github.com/pfalcon/esp-open-sdk.git
+[submodule "modules/nix"]
+	path = modules/nix
+	url = https://github.com/busti/nixpkgs-esp-dev
diff --git a/README.md b/README.md
index 0495a08..ebf56ee 100644
--- a/README.md
+++ b/README.md
@@ -59,4 +59,12 @@ install `docker` on your platform and buil with
 
 ```bash
 make firmware_docker -j$(nproc)
-```
\ No newline at end of file
+```
+
+### Build Steps (using nixos)  
+
+In the project root run:
+```
+nix-shell --option sandbox false
+make firmware -j$(nproc)
+```
diff --git a/modules/nix b/modules/nix
new file mode 160000
index 0000000..403461c
--- /dev/null
+++ b/modules/nix
@@ -0,0 +1 @@
+Subproject commit 403461c810ddab0cf498b24df5b5ff92606e4154
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..416ba65
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1 @@
+import ./modules/nix/shell-esp-open-rtos.nix {}