CI: Use reusable workflows

.github/workflows/build.yml

@@ -0,0 +1,23 @@
+name: Build through reusable workflow
+
+# This workflow will build the app.
+# It calls a reusable workflow developed by Ledger's internal developer team to build the application and upload the
+# resulting binaries.
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+      - main
+      - develop
+  pull_request:
+
+jobs:
+  build_application:
+    name: Build application using the reusable workflow
+    uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_build.yml@xch/rust-ci
+    with:
+      upload_app_binaries_artifact: "compiled_app_binaries"
+      builder: ledger-app-builder
+      run_for_devices: '["nanox", "nanosp"]'

.github/workflows/guidelines_enforcer.yml

@@ -0,0 +1,25 @@
+name: Ensure compliance with Ledger guidelines
+
+# This workflow is mandatory in all applications
+# It calls a reusable workflow guidelines_enforcer developed by Ledger's internal developer team.
+# The successful completion of the reusable workflow is a mandatory step for an app to be available on the Ledger
+# application store.
+#
+# More information on the guidelines can be found in the repository:
+# LedgerHQ/ledger-app-workflows/
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+      - main
+      - develop
+  pull_request:
+
+jobs:
+  guidelines_enforcer:
+    name: Call Ledger guidelines_enforcer
+    uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_guidelines_enforcer.yml@xch/rust-ci
+    with:
+      run_for_devices: '["nanox", "nanosp"]'

.github/workflows/rust.yml

@@ -27,28 +27,11 @@ jobs:
         with:
           toolchain: nightly
           override: true
-          components: rust-src, rustfmt, clippy
-      - name: arm-none-eabi-gcc
-        uses: fiam/[email protected]
-        with:
-          release: '9-2019-q4'
+          components: rustfmt
       - name: Checkout
         uses: actions/checkout@v3
-      - name: Install clang
-        run: sudo apt-get update && sudo apt install -y clang
-      - name: Install cargo-ledger
-        run: cargo install --git=https://github.com/LedgerHQ/cargo-ledger
-      - name: Setup cargo-ledger
-        run: cargo ledger setup
-      - name: Cargo clippy
-        uses: actions-rs/cargo@v1
-        with:
-          command: clippy
-          args: --target nanosplus -- -Dwarnings
       - name: Cargo fmt
         uses: actions-rs/cargo@v1
         with:
           command: fmt
           args: --all -- --check
-      - name: Build app
-        run: cargo ledger build ${{ matrix.target }}