setup-poetry: Hide Poetry installation from tools that search the workspace for Python files

.github/test_projects/repo_root/pyproject.toml

@@ -0,0 +1,37 @@
+[project]
+name = "test-project"
+version = "0.1.0"
+description = ""
+authors = [
+    {name = "Joel Dixon",email = "[email protected]"}
+]
+readme = "README.md"
+requires-python = ">=3.9,<4.0"
+dynamic = ["dependencies"]
+
+[tool.poetry]
+packages = [{include = "test_project", from = "src"}]
+
+[tool.poetry.group.lint.dependencies]
+ni-python-styleguide = ">=0.4.1"
+mypy = ">=1.0"
+pyright = { version = ">=1.1.400", extras = ["nodejs"] }
+
+[tool.ni-python-styleguide]
+extend_exclude = "update-project-version"
+
+[tool.mypy]
+mypy_path = "."
+files = "."
+namespace_packages = true
+strict = true
+explicit_package_bases = true
+exclude = "update-project-version"
+
+[tool.pyright]
+include = ["src/", "tests/"]
+exclude = ["update-project-version"]
+
+[build-system]
+requires = ["poetry-core>=2.0.0,<3.0.0"]
+build-backend = "poetry.core.masonry.api"

.github/test_projects/repo_root/src/test_project/__init__.py

@@ -0,0 +1 @@
+"""Docstring required."""

.github/test_projects/repo_root/tests/__init__.py

@@ -0,0 +1 @@
+"""Module docstring."""

.github/workflows/test_actions.yml

@@ -228,11 +228,33 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: Set up Poetry
         uses: ./setup-poetry
-      - name: Analyze Python Project
+      - name: Analyze Python project
         uses: ./analyze-project
         with:
           project-directory: ${{ github.workspace }}/.github/test_projects/minimal
 
+  test_analyze_project_repo_root:
+    name: Test analyze-project (repo root)
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [windows-latest, ubuntu-latest, macos-latest]
+        python-version: [3.9, '3.10', 3.11, 3.12, 3.13, pypy3.10, pypy3.11]
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - name: Set up Python
+        uses: ./setup-python
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Set up Poetry
+        uses: ./setup-poetry
+      - name: Copy Python project to root
+        run: cp -av "${{ github.workspace }}/.github/test_projects/repo_root"/* "${{ github.workspace }}"
+        shell: bash
+      - name: Analyze Python project
+        uses: ./analyze-project
+
   # This job is intended to combine the test results so we don't have to list
   # each matrix combination in the required status check settings. There are a
   # lot of corner cases that make this harder than it should be; see See
@@ -248,6 +270,7 @@ jobs:
       test_check_project_version,
       test_update_project_version,
       test_analyze_project,
+      test_analyze_project_repo_root,
     ]
     if: ${{ !cancelled() }}
     steps:

setup-poetry/action.yml

@@ -27,20 +27,30 @@ runs:
     - name: Set paths (Linux/Mac)
       if: runner.os != 'Windows'
       run: |
-        echo "POETRY_BIN_DIR=$GITHUB_WORKSPACE/.cache/poetry/bin" >> "$GITHUB_ENV"
-        echo "POETRY_CONFIG_DIR=$GITHUB_WORKSPACE/.cache/poetry/config" >> "$GITHUB_ENV"
-        echo "POETRY_HOME=$GITHUB_WORKSPACE/.cache/poetry/home" >> "$GITHUB_ENV"
-        echo "POETRY_HOME_BIN=$GITHUB_WORKSPACE/.cache/poetry/home/bin" >> "$GITHUB_ENV"
-        echo "$GITHUB_WORKSPACE/.cache/poetry/bin" >> "$GITHUB_PATH"
+        # Use the "pipeline directory" so that tools that search the workspace
+        # directory for Python files will not find the Poetry cache. Use
+        # realpath to normalize the "../".
+        PIPELINE_DIR="$(realpath $GITHUB_WORKSPACE/..)"
+        POETRY_ROOT="$PIPELINE_DIR/.cache/poetry"
+        echo "POETRY_BIN_DIR=$POETRY_ROOT/bin" >> "$GITHUB_ENV"
+        echo "POETRY_CONFIG_DIR=$POETRY_ROOT/config" >> "$GITHUB_ENV"
+        echo "POETRY_HOME=$POETRY_ROOT/home" >> "$GITHUB_ENV"
+        echo "POETRY_HOME_BIN=$POETRY_ROOT/home/bin" >> "$GITHUB_ENV"
+        echo "$POETRY_ROOT/bin" >> "$GITHUB_PATH"
       shell: bash
     - name: Set paths (Windows)
       if: runner.os == 'Windows'
       run: |
-        Add-Content $env:GITHUB_ENV "POETRY_BIN_DIR=$env:GITHUB_WORKSPACE\.cache\poetry\bin"
-        Add-Content $env:GITHUB_ENV "POETRY_CONFIG_DIR=$env:GITHUB_WORKSPACE\.cache\poetry\config"
-        Add-Content $env:GITHUB_ENV "POETRY_HOME=$env:GITHUB_WORKSPACE\.cache\poetry\home"
-        Add-Content $env:GITHUB_ENV "POETRY_HOME_BIN=$env:GITHUB_WORKSPACE\.cache\poetry\home\Scripts"
-        Add-Content $env:GITHUB_PATH "$env:GITHUB_WORKSPACE\.cache\poetry\bin"
+        # Use the "pipeline directory" so that tools that search the workspace
+        # directory for Python files will not find the Poetry cache. Use
+        # Resolve-Path to normalize the "../".
+        $PIPELINE_DIR = (Resolve-Path -Path "$env:GITHUB_WORKSPACE\..").Path
+        $POETRY_ROOT = "$PIPELINE_DIR\.cache\poetry"
+        Add-Content $env:GITHUB_ENV "POETRY_BIN_DIR=$POETRY_ROOT\bin"
+        Add-Content $env:GITHUB_ENV "POETRY_CONFIG_DIR=$POETRY_ROOT\config"
+        Add-Content $env:GITHUB_ENV "POETRY_HOME=$POETRY_ROOT\home"
+        Add-Content $env:GITHUB_ENV "POETRY_HOME_BIN=$POETRY_ROOT\home\Scripts"
+        Add-Content $env:GITHUB_PATH "$POETRY_ROOT\bin"
       shell: pwsh
     - name: Copy paths from $GITHUB_ENV to $GITHUB_OUTPUT
       id: copy-paths