Enable CI/CD

.gitea/build.sh

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+#! /bin/sh
+
+set -e
+
+log () {
+  echo "=== $*"
+}
+
+# Make sure we're in the project directory
+cd $(dirname $0)/..
+
+mkdir -p out/
+
+while read vid pid variant; do
+  log
+  log Building $vid $pid $product
+  log
+
+  ## This is bananas.
+  rm -rf build/
+  mkdir -p build/cache/
+  cp -rL /usr/share/arduino /usr/share/arduino-builder build/ || true # there's a cyclic symlink that causes failure
+
+  sed -i "
+    /leonardo.build.vid/ s/=.*/=$vid/
+    /leonardo.build.pid/ s/=.*/=$pid/
+    /leonardo.build.usb_product/ s/=.*/=\"Mockband $variant\"/
+  " build/arduino/hardware/arduino/avr/boards.txt
+  grep 'leonardo.build' build/arduino/hardware/arduino/avr/boards.txt
+
+  arduino-builder \
+    -fqbn arduino:avr:leonardo \
+    -build-path $(pwd)/build/ \
+    -build-cache $(pwd)/build/cache/ \
+    -hardware build/arduino/hardware \
+    -tools build/arduino/tools \
+    -compile MockBand.ino
+
+  mv build/MockBand.ino.hex out/MockBand.$variant.hex
+  find out build/cache
+done << EOD
+0x1bad 0x0004 guitar
+0x1bad 0x3110 drums
+EOD
+
+ls -l out/

.gitea/publish.sh

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+#! /bin/sh
+
+set -e
+
+PACKAGE=${GITHUB_REPOSITORY#*/}
+VERSION=$GITHUB_REF_NAME
+
+BASE=$GITHUB_SERVER_URL/api/packages/$GITHUB_ACTOR/generic/$PACKAGE/$VERSION
+
+echo "=== Delete existing version: $VERSION"
+curl \
+  --include \
+  --user "$GITHUB_ACTOR:$PACKAGE_API_TOKEN" \
+  --request DELETE \
+  $BASE
+
+for path in "$@"; do
+  fn=$(basename "$path")
+  echo "=== Upload $VERSION/$fn"
+  curl \
+    --fail \
+    --include \
+    --user "$GITHUB_ACTOR:$PACKAGE_API_TOKEN" \
+    --upload-file "$path" \
+    $BASE/$fn
+done

.gitea/workflows/build.yaml

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+name: Mockband
+on: [push]
+jobs:
+  build:
+    runs-on:
+      - arduino
+    env:
+      PACKAGE_API_TOKEN: ${PACKAGE_API_TOKEN}
+    steps:
+      - name: check out repository
+        run: git clone $GITHUB_SERVER_URL/$GITHUB_REPOSITORY .
+      - name: build
+        run: .gitea/build.sh
+      - name: publish
+        env:
+          PACKAGE_API_TOKEN: ${{ secrets.PACKAGE_API_TOKEN }}
+        run: .gitea/publish.sh out/*