[ci][client] Eth Python client automatically infer its version from tags

.github/workflows/python-client.yml

@@ -4,6 +4,8 @@ name: Python client checks, package build and deployment
 on:
   workflow_dispatch:
   push:
+    tags:
+      - 'client-*'
     branches:
       - develop
       - master
@@ -36,58 +38,14 @@ jobs:
       - name: Mypy type checking
         run: (cd client && mypy src/)
 
-  get-develop-version:
-    name: Get develop version
-    runs-on: ubuntu-latest
-    if: ${{ github.event_name == 'pull_request' && github.base_ref == 'develop' }}
-    outputs:
-      develop_version: ${{ steps.get-version.outputs.develop_version }}
-    steps:
-      - name: Check Out Code
-        uses: actions/checkout@v3
-        with:
-          ref: develop
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.12.0
-      - name: Get version
-        id: get-version
-        env:
-          PYTHONPATH: client/src/ledger_app_clients
-        run: |
-          echo "develop_version=$(python -c 'from ethereum import __version__; print(__version__)')" >> $GITHUB_OUTPUT
-
-  version-check:
-    name: Check Version when opening a PR against develop
-    runs-on: ubuntu-latest
-    needs: get-develop-version
-    steps:
-      - name: Check Out Code
-        uses: actions/checkout@v3
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.12.0
-      - name: Check Version Bump
-        env:
-          DEVELOP_VERSION: ${{needs.get-develop-version.outputs.develop_version}}
-          PYTHONPATH: client/src/ledger_app_clients
-        run: |
-          current_version=$(python -c "from ethereum import __version__; print(__version__)")
-          if [[ "$current_version" == "$DEVELOP_VERSION" ]]; then
-            echo "Version in __init__.py hasn't been bumped. Please bump the version before merging."
-            exit 1
-          fi
-
   packaging:
     needs: [lint, mypy]
     name: Build, test and deploy the Python package
     uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_pypi_deployment.yml@v1
     with:
       package_directory: "client/"
       stable_deployment: true
-      check_changelog_version: true
+      check_changelog_version: startsWith(github.ref,'refs/tags/')
       publish: ${{ github.event_name == 'push' }}
     secrets:
       pypi_token: secrets.PYPI_PUBLIC_API_TOKEN

.gitignore

@@ -9,7 +9,7 @@ build/
 
 # Python
 *.pyc
-
+__version__.py
 
 # JS
 tests/node_modules

client/pyproject.toml

@@ -34,8 +34,12 @@ dependencies = [
 [tools.setuptools]
 include-package-data = true
 
-[tool.setuptools.dynamic]
-version = {attr = "ledger_app_clients.ethereum.__version__"}
+[tool.setuptools_scm]
+version_file = "src/ledger_app_clients/ethereum/__version__.py"
+local_scheme = "no-local-version"
+root = "../"
+git_describe_command = "git describe --dirty --tags --long --match client-*[0-9]*"
+fallback_version = "0.0.0"
 
 [project.urls]
 Home = "https://github.com/LedgerHQ/app-ethereum"

client/src/ledger_app_clients/ethereum/__init__.py

@@ -1 +1,4 @@
-__version__ = "0.2.0"
+try:
+    from ledger_app_clients.ethereum.__version__ import __version__  # noqa
+except ImportError:
+    __version__ = "unknown version"  # noqa