Update nw-gyp to latest node-gyp 6.1.0

.github/ISSUE_TEMPLATE.md

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+<!--
+Thank you for reporting an issue. The more information you can give us, the
+better the chance we can fix your problem.
+
+This issue tracker is for issues with node-gyp,
+if you have an issue installing a specific module, please file an issue on
+that module's issue tracker (`npm issues modulename`).
+-->
+
+* **Node Version**: <!-- `node -v` and `npm -v` -->
+* **Platform**: <!-- `uname -a` (UNIX), or `systeminfo | findstr /B /C:"OS Name" /C:"OS Version" /C:"System Type"` (Windows) -->
+* **Compiler**: <!-- `cc -v` (UNIX) or `msbuild /version & cl` (Windows) -->
+* **Module**: <!-- what you tried to build/install -->
+
+<details><summary>Verbose output (from npm or node-gyp):</summary>
+
+```
+Paste your log here, between the backticks. It can be:
+  - npm --verbose output,
+  - or contents of npm-debug.log,
+  - or output of node-gyp rebuild --verbose.
+```
+
+</details>
+
+<!-- Any further details -->
+

.github/PULL_REQUEST_TEMPLATE.md

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+<!--
+Thank you for your pull request. Please review the below requirements.
+
+Contributor guide: https://github.com/nodejs/node/blob/master/CONTRIBUTING.md
+-->
+
+##### Checklist
+<!-- Remove items that do not apply. For completed items, change [ ] to [x]. -->
+
+- [ ] `npm install && npm test` passes
+- [ ] tests are included <!-- Bug fixes and new features should include tests -->
+- [ ] documentation is changed or added
+- [ ] commit message follows [commit guidelines](https://github.com/nodejs/node/blob/master/doc/guides/contributing/pull-requests.md#commit-message-guidelines)
+
+##### Description of change
+<!-- Provide a description of the change -->
+

.github/workflows/Python_tests.yml

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+# TODO: Line 15, enable python-version: 3.5
+# TODO: Line 36, enable pytest --doctest-modules
+
+name: Python_tests
+on: [push, pull_request]
+jobs:
+  Python_tests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      max-parallel: 15
+      matrix:
+        os: [macos-latest, ubuntu-latest, windows-latest]
+        python-version: [2.7, 3.6, 3.7, 3.8]  # 3.5,
+    steps:
+      - uses: actions/checkout@v1
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install flake8 pytest  # -r requirements.txt
+      - name: Lint with flake8
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          # stop the build if there are Python syntax errors or undefined names
+          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+      - name: Test with pytest (Linux and macOS)
+        if: matrix.os != 'windows-latest'
+        run: pytest
+      - name: Test with pytest (Windows)
+        if: matrix.os == 'windows-latest'
+        shell: bash
+        run: GYP_MSVS_VERSION=2015 GYP_MSVS_OVERRIDE_PATH="C:\\Dummy" pytest
+      # - name: Run doctests with pytest
+      #   run: pytest --doctest-modules

.gitignore

@@ -1 +1,6 @@
 gyp/test
+node_modules
+test/.node-gyp
+.ncu
+.nyc_output
+package-lock.json

.travis.yml

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+dist: xenial
+language: python
+cache: pip
+addons:
+  homebrew:
+    update: true
+    packages:
+    - npm
+    - pyenv
+jobs:
+  include:
+    - name: "Python 2.7 on Linux"
+      env: NODE_GYP_FORCE_PYTHON=python2
+      python: 2.7
+
+    - name: "Node.js 6 & Python 3.8 on Linux"
+      python: 3.8
+      env: NODE_GYP_FORCE_PYTHON=python3
+      before_install: nvm install 6
+    - name: "Node.js 8 & Python 3.8 on Linux"
+      python: 3.8
+      env: NODE_GYP_FORCE_PYTHON=python3
+      before_install: nvm install 8
+    - name: "Node.js 10 & Python 3.8 on Linux"
+      python: 3.8
+      env: NODE_GYP_FORCE_PYTHON=python3
+      before_install: nvm install 10
+
+    - name: "Node.js 12 & Python 3.5 on Linux"
+      python: 3.5
+      env: NODE_GYP_FORCE_PYTHON=python3
+      before_install: nvm install 12
+    - name: "Node.js 12 & Python 3.6 on Linux"
+      python: 3.6
+      env: NODE_GYP_FORCE_PYTHON=python3
+      before_install: nvm install 12
+    - name: "Node.js 12 & Python 3.7 on Linux"
+      python: 3.7
+      env: NODE_GYP_FORCE_PYTHON=python3
+      before_install: nvm install 12
+    - name: "Node.js 12 & Python 3.8 on Linux"
+      python: 3.8
+      env: NODE_GYP_FORCE_PYTHON=python3
+      before_install: nvm install 12
+
+    - name: "Python 2.7 on macOS"
+      os: osx
+      osx_image: xcode11.2
+      language: shell  # 'language: python' is not yet supported on macOS
+      env: NODE_GYP_FORCE_PYTHON=python2 PATH=$HOME/.pyenv/shims:$PATH PYENV_VERSION=2.7.17
+      before_install: pyenv install $PYENV_VERSION
+    - name: "Python 3.8 on macOS"
+      os: osx
+      osx_image: xcode11.2
+      language: shell  # 'language: python' is not yet supported on macOS
+      env: NODE_GYP_FORCE_PYTHON=python3 PATH=$HOME/.pyenv/shims:$PATH PYENV_VERSION=3.8.0
+      before_install: pyenv install $PYENV_VERSION
+
+    - name: "Node.js 6 & Python 2.7 on Windows"
+      os: windows
+      language: node_js
+      node_js: 6  # node
+      env: >-
+        PATH=/c/Python27:/c/Python27/Scripts:$PATH
+        NODE_GYP_FORCE_PYTHON=/c/Python27/python.exe
+      before_install: choco install python2
+    - name: "Node.js 12 & Python 2.7 on Windows"
+      os: windows
+      language: node_js
+      node_js: 12  # node
+      env: >-
+        PATH=/c/Python27:/c/Python27/Scripts:$PATH
+        NODE_GYP_FORCE_PYTHON=/c/Python27/python.exe
+      before_install: choco install python2
+
+    - name: "Node.js 12 & Python 3.7 on Windows"
+      os: windows
+      language: node_js
+      node_js: 12  # node
+      env: >-
+        PATH=/c/Python37:/c/Python37/Scripts:$PATH
+        NODE_GYP_FORCE_PYTHON=/c/Python37/python.exe
+      before_install: choco install python --version=3.7.4
+    - name: "Node.js 12 & Python 3.8 on Windows"
+      os: windows
+      language: node_js
+      node_js: 12  # node
+      env: >-
+        PATH=/c/Python38:/c/Python38/Scripts:$PATH
+        NODE_GYP_FORCE_PYTHON=/c/Python38/python.exe
+      before_install: choco install python
+
+install:
+  - python -m pip install --upgrade flake8 pytest==4.6.6  # pytest 5 no longer supports legacy Python
+before_script:
+  - python -m flake8 --version
+  # stop the build if there are Python syntax errors or undefined names
+  - python -m flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+  # exit-zero treats all errors as warnings.  Two space indentation is OK.  The GitHub editor is 127 chars wide
+  - python -m flake8 . --count --exit-zero --ignore=E111,E114,W503 --max-complexity=10 --max-line-length=127 --statistics
+  - npm install
+  - npm list
+script:
+  - node -e 'require("npmlog").level="verbose"; require("./lib/find-python")(null,()=>{})'
+  - npm test
+  - GYP_MSVS_VERSION=2015 GYP_MSVS_OVERRIDE_PATH="C:\\Dummy" python -m pytest
+notifications:
+  on_success: change
+  on_failure: change  # `always` will be the setting once code changes slow down