Add build recipe

.gitignore

@@ -1,5 +1,7 @@
+.build
 .direnv
 .venv
 .west
 modules
+firmware
 zmk

Justfile

@@ -1,13 +1,25 @@
 default:
     @just --list --unsorted
 
-# build firmware
+build := ".build"
-build:
+out := "firmware"
-    echo "Building firmware..."
 
-# clear build cache
+# build firmware
+build board *args:
+    #!/usr/bin/env bash
+    set -euo pipefail
+    BUILD="{{build}}/{{board}}"
+    echo "Building firmware..."
+    west build -d "$BUILD" -s zmk/app -b {{board}} {{args}} -- -DZMK_CONFIG="{{absolute_path('config')}}"
+    if [[ -f "$BUILD/zephyr/zmk.uf2" ]]; then
+        mkdir -p {{out}} && cp "$BUILD/zephyr/zmk.uf2" "{{out}}/{{board}}.uf2"
+    else
+        mkdir -p {{out}} && cp "$BUILD/zephyr/zmk.bin" "{{out}}/{{board}}.bin"
+    fi
+
+# clear build cache and artifacts
 clean:
-    rm -rf build
+    rm -rf {{build}} {{out}}
 
 # list all build targets
 list:

flake.nix

@@ -20,10 +20,11 @@
   in {
     devShells.${system}.default = pkgs.mkShell {
       packages = [
-        zephyr.sdkFull
+        zephyr.hosttools
         zephyr.pythonEnv
-        # zephyr.hosttools
+        zephyr.sdkFull
         pkgs.cmake
+        pkgs.dtc
         pkgs.ninja
       ];
     };