fix: 3.x-dev can install a 3.y version (#417)

* fix: 3.x-dev can install a 3.y version

* Update README section for `-dev`

.github/workflows/e2e-cache.yml

@@ -61,7 +61,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ['3.9', 'pypy-3.7-v7.x']
+        python-version: ['3.9', 'pypy-3.8']
     steps:
       - uses: actions/checkout@v3
       - name: Install poetry

.github/workflows/test-pypy.yml

@@ -18,10 +18,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, windows-latest, ubuntu-latest]
+        os: [macos-latest, windows-latest, ubuntu-18.04, ubuntu-latest]
         pypy:
         - 'pypy-2.7'
         - 'pypy-3.7'
+        - 'pypy3.9'
         - 'pypy-2.7-v7.3.4'
         - 'pypy-3.7-v7.3.5'
         - 'pypy-3.7-v7.3.4'
@@ -29,18 +30,38 @@ jobs:
         - 'pypy-3.7-v7.x'
         - 'pypy-2.7-v7.3.4rc1'
         - 'pypy-3.7-nightly'
+        - 'pypy3.8-v7.3.7'
 
     steps:
       - name: Checkout
         uses: actions/checkout@v2
   
       - name: setup-python ${{ matrix.pypy }}
+        id: setup-python
         uses: ./
         with:
           python-version: ${{ matrix.pypy }}
 
+      - name: Check python-path
+        run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'
+        shell: bash
+
       - name: PyPy and Python version
         run: python --version
   
       - name: Run simple code
         run: python -c 'import math; print(math.factorial(5))'
+
+      - name: Assert PyPy is running
+        run: |
+          import platform
+          assert platform.python_implementation().lower() == "pypy"
+        shell: python
+
+      - name: Assert expected binaries (or symlinks) are present
+        run: |
+          EXECUTABLE=${{ matrix.pypy }}
+          EXECUTABLE=${EXECUTABLE/pypy-/pypy}  # remove the first '-' in "pypy-X.Y" -> "pypyX.Y" to match executable name
+          EXECUTABLE=${EXECUTABLE%%-*}  # remove any -* suffixe
+          ${EXECUTABLE} --version
+        shell: bash

.github/workflows/test-python.yml

@@ -10,45 +10,69 @@ on:
       - '**.md'
   schedule:
     - cron: 30 3 * * *
+  workflow_dispatch:
 
 jobs:
-  default-version:
-    name: Setup default version
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [macos-latest, windows-latest, ubuntu-20.04]
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v2
-
-    - name: setup default python 
-      uses: ./
-
-    - name: Validate version
-      run: python --version
-
-    - name: Run simple python code
-      run: python -c 'import math; print(math.factorial(5))'
-
   setup-versions-from-manifest:
     name: Setup ${{ matrix.python }} ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, windows-latest, ubuntu-20.04]
+        os: [macos-latest, windows-latest, ubuntu-18.04, ubuntu-20.04]
         python: [3.5.4, 3.6.7, 3.7.5, 3.8.1]
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: setup-python ${{ matrix.python }}
+      id: setup-python
       uses: ./
       with:
         python-version: ${{ matrix.python }}
 
+    - name: Check python-path
+      run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'
+      shell: bash
+
+    - name: Validate version
+      run: |
+        $pythonVersion = (python --version)
+        if ("Python ${{ matrix.python }}" -ne "$pythonVersion"){
+          Write-Host "The current version is $pythonVersion; expected version is ${{ matrix.python }}"
+          exit 1
+        }
+        $pythonVersion
+      shell: pwsh
+
+    - name: Run simple code
+      run: python -c 'import math; print(math.factorial(5))'
+
+  setup-versions-from-file:
+    name: Setup ${{ matrix.python }} ${{ matrix.os }} version file
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-18.04, ubuntu-20.04]
+        python: [3.5.4, 3.6.7, 3.7.5, 3.8.1]
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: build-version-file ${{ matrix.python }}
+      run: echo ${{ matrix.python }} > .python-version
+
+    - name: setup-python ${{ matrix.python }}
+      id: setup-python
+      uses: ./
+      with:
+        python-version-file: '.python-version'
+
+    - name: Check python-path
+      run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'
+      shell: bash
+
     - name: Validate version
       run: |
         $pythonVersion = (python --version)
@@ -68,16 +92,21 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, windows-latest, ubuntu-20.04]
+        os: [macos-latest, windows-latest, ubuntu-18.04, ubuntu-20.04]
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: setup-python 3.9.0-beta.4
+      id: setup-python
       uses: ./
       with:
         python-version: '3.9.0-beta.4'
 
+    - name: Check python-path
+      run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'
+      shell: bash
+
     - name: Validate version
       run: |
         $pythonVersion = (python --version)
@@ -91,3 +120,30 @@ jobs:
     - name: Run simple code
       run: python -c 'import math; print(math.factorial(5))'
 
+  setup-dev-version:
+    name: Setup 3.9-dev ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: setup-python 3.9-dev
+      id: setup-python
+      uses: ./
+      with:
+        python-version: '3.9-dev'
+
+    - name: Check python-path
+      run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'
+      shell: bash
+
+    - name: Validate version
+      run: ${{ startsWith(steps.setup-python.outputs.python-version, '3.9.') }}
+      shell: bash
+
+    - name: Run simple code
+      run: python -c 'import math; print(math.factorial(5))'

.github/workflows/workflow.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
-        operating-system: [ubuntu-20.04, windows-latest]
+        operating-system: [ubuntu-latest, windows-latest]
     steps:
     - name: Checkout
       uses: actions/checkout@v2
@@ -89,3 +89,13 @@ jobs:
         python-version: 3.8.1
     - name: Verify 3.8.1
       run: python __tests__/verify-python.py 3.8.1
+
+    - name: Run with setup-python 3.10
+      id: cp310
+      uses: ./
+      with:
+        python-version: "3.10"
+    - name: Verify 3.10
+      run: python __tests__/verify-python.py 3.10
+    - name: Run python-path sample 3.10
+      run: pipx run --python '${{ steps.cp310.outputs.python-path }}' nox --version

.licenses/npm/@actions/core.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/core"
-version: 1.10.0
+version: 1.2.6
 type: npm
 summary: Actions core lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/core

.licenses/npm/@actions/http-client-2.1.0.dep.yml

@@ -1,32 +0,0 @@
----
-name: "@actions/http-client"
-version: 2.1.0
-type: npm
-summary: Actions Http Client
-homepage: https://github.com/actions/toolkit/tree/main/packages/http-client
-license: mit
-licenses:
-- sources: LICENSE
-  text: |
-    Actions Http Client for Node.js
-
-    Copyright (c) GitHub, Inc.
-
-    All rights reserved.
-
-    MIT License
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
-    associated documentation files (the "Software"), to deal in the Software without restriction,
-    including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
-    and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
-    subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
-    LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-    NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-notices: []

CODE_OF_CONDUCT.md

@@ -0,0 +1,76 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to make participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, and it also applies when
+an individual is representing the project or its community in public spaces.
+Examples of representing a project or community include using an official
+project e-mail address, posting via an official social media account, or acting
+as an appointed representative at an online or offline event. Representation of
+a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at opensource+actions/setup-python@github.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq

README.md

@@ -43,7 +43,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '2.x', '3.x', 'pypy-2.7', 'pypy-3.7', 'pypy-3.8' ]
+        python-version: [ '2.x', '3.x', 'pypy2.7', 'pypy3.7', 'pypy3.8' ]
     name: Python ${{ matrix.python-version }} sample
     steps:
       - uses: actions/checkout@v3
@@ -63,7 +63,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['2.7', '3.7', '3.8', '3.9', '3.10', 'pypy-2.7', 'pypy-3.8']
+        python-version: ['2.7', '3.7', '3.8', '3.9', '3.10', 'pypy2.7', 'pypy3.8']
         exclude:
           - os: macos-latest
             python-version: '3.8'
@@ -125,9 +125,9 @@ jobs:
     strategy:
       matrix:
         python-version:
-        - 'pypy-3.7' # the latest available version of PyPy that supports Python 3.7
+        - 'pypy3.7' # the latest available version of PyPy that supports Python 3.7
-        - 'pypy-3.7-v7.3.3' # Python 3.7 and PyPy 7.3.3
+        - 'pypy3.7-v7.3.3' # Python 3.7 and PyPy 7.3.3
-        - 'pypy-3.8' # the latest available version of PyPy that supports Python 3.8
+        - 'pypy3.8' # the latest available version of PyPy that supports Python 3.8
     steps:
     - uses: actions/checkout@v3
     - uses: actions/setup-python@v3
@@ -137,6 +137,22 @@ jobs:
 ```
 More details on PyPy syntax and examples of using preview / nightly versions of PyPy can be found in the [Available versions of PyPy](#available-versions-of-pypy) section.
 
+An output is available with the absolute path of the python interpreter executable if you need it:
+```yaml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v3
+      id: cp310
+      with:
+        python-version: "3.10"
+    - run: pipx run --python '${{ steps.cp310.outputs.python-path }}' nox --version
+```
+
+>The environment variable `pythonLocation` also becomes available after Python or PyPy installation. It contains the absolute path to the folder where the desired version of Python or PyPy is installed.
+
 # Getting started with Python + Actions
 
 Check out our detailed guide on using [Python with GitHub Actions](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/using-python-with-github-actions).
@@ -150,10 +166,13 @@ Check out our detailed guide on using [Python with GitHub Actions](https://help.
     - For every minor version of Python, expect only the latest patch to be preinstalled.
     - If `3.8.1` is installed for example, and `3.8.2` is released, expect `3.8.1` to be removed and replaced by `3.8.2` in the tools cache.
     - If the exact patch version doesn't matter to you, specifying just the major and minor version will get you the latest preinstalled patch version. In the previous example, the version spec `3.8` will use the `3.8.2` Python version found in the cache.
+    - Use `-dev` instead of a patch number (e.g., `3.11-dev`) to install the latest patch version release for a given minor version, *alpha and beta releases included*.
 - Downloadable Python versions from GitHub Releases ([actions/python-versions](https://github.com/actions/python-versions/releases)).
     - All available versions are listed in the [version-manifest.json](https://github.com/actions/python-versions/blob/main/versions-manifest.json) file.
     - If there is a specific version of Python that is not available, you can open an issue here
 
+**Note:** Python versions used in this action are generated in the [python-versions](https://github.com/actions/python-versions) repository. For macOS and Ubuntu images python versions are built from the source code. For Windows the python-versions repository uses installation executable. For more information please refer to the [python-versions](https://github.com/actions/python-versions) repository.
+
  # Available versions of PyPy
 
  `setup-python` is able to configure PyPy from two sources:
@@ -161,7 +180,7 @@ Check out our detailed guide on using [Python with GitHub Actions](https://help.
 - Preinstalled versions of PyPy in the tools cache on GitHub-hosted runners
   - For detailed information regarding the available versions of PyPy that are installed, see [Supported software](https://docs.github.com/en/actions/reference/specifications-for-github-hosted-runners#supported-software).
   - For the latest PyPy release, all versions of Python are cached.
-  - Cache is updated with a 1-2 week delay. If you specify the PyPy version as `pypy-3.7`, the cached version will be used although a newer version is available. If you need to start using the recently released version right after release, you should specify the exact PyPy version using `pypy-3.7-v7.3.3`.
+  - Cache is updated with a 1-2 week delay. If you specify the PyPy version as `pypy3.7` or `pypy-3.7`, the cached version will be used although a newer version is available. If you need to start using the recently released version right after release, you should specify the exact PyPy version using `pypy3.7-v7.3.3` or `pypy-3.7-v7.3.3`.
 
 - Downloadable PyPy versions from the [official PyPy site](https://downloads.python.org/pypy/).
   - All available versions that we can download are listed in [versions.json](https://downloads.python.org/pypy/versions.json) file.
@@ -179,8 +198,8 @@ GitHub hosted runners have a tools cache that comes with a few versions of Pytho
 |**PyPy Tool Cache**|`RUNNER_TOOL_CACHE/PyPy/*`|
 
 GitHub virtual environments are setup in [actions/virtual-environments](https://github.com/actions/virtual-environments). During the setup, the available versions of Python and PyPy are automatically downloaded, setup and documented.
-- [Tools cache setup for Ubuntu](https://github.com/actions/virtual-environments/blob/main/images/linux/scripts/installers/hosted-tool-cache.sh)
+- Tools cache setup for Ubuntu: [Install-Toolset.ps1](https://github.com/actions/virtual-environments/blob/main/images/linux/scripts/installers/Install-Toolset.ps1) [Configure-Toolset.ps1](https://github.com/actions/virtual-environments/blob/main/images/linux/scripts/installers/Configure-Toolset.ps1)
-- [Tools cache setup for Windows](https://github.com/actions/virtual-environments/blob/main/images/win/scripts/Installers/Download-ToolCache.ps1)
+- Tools cache setup for Windows: [Install-Toolset.ps1](https://github.com/actions/virtual-environments/blob/main/images/win/scripts/Installers/Install-Toolset.ps1) [Configure-Toolset.ps1](https://github.com/actions/virtual-environments/blob/main/images/win/scripts/Installers/Configure-Toolset.ps1)
 
 # Specifying a Python version
 
@@ -194,17 +213,17 @@ You should specify only a major and minor version if you are okay with the most
   - Using the most recent patch version will result in a very quick setup since no downloads will be required since a locally installed version Python on the runner will be used.
 
 # Specifying a PyPy version
-The version of PyPy should be specified in the format `pypy-<python_version>[-v<pypy_version>]`.
+The version of PyPy should be specified in the format `pypy<python_version>[-v<pypy_version>]` or `pypy-<python_version>[-v<pypy_version>]`.
 The `<pypy_version>` parameter is optional and can be skipped. The latest version will be used in this case.
 
 ```
-pypy-3.7 # the latest available version of PyPy that supports Python 3.7
+pypy3.7 or pypy-3.7 # the latest available version of PyPy that supports Python 3.7
-pypy-3.8 # the latest available version of PyPy that supports Python 3.8
+pypy3.8 or pypy-3.8 # the latest available version of PyPy that supports Python 3.8
-pypy-2.7 # the latest available version of PyPy that supports Python 2.7
+pypy2.7 or pypy-2.7 # the latest available version of PyPy that supports Python 2.7
-pypy-3.7-v7.3.3 # Python 3.7 and PyPy 7.3.3
+pypy3.7-v7.3.3 or pypy-3.7-v7.3.3 # Python 3.7 and PyPy 7.3.3
-pypy-3.7-v7.x # Python 3.7 and the latest available PyPy 7.x
+pypy3.7-v7.x or pypy-3.7-v7.x # Python 3.7 and the latest available PyPy 7.x
-pypy-3.7-v7.3.3rc1 # Python 3.7 and preview version of PyPy
+pypy3.7-v7.3.3rc1 or pypy-3.7-v7.3.3rc1 # Python 3.7 and preview version of PyPy
-pypy-3.7-nightly # Python 3.7 and nightly PyPy
+pypy3.7-nightly or pypy-3.7-nightly # Python 3.7 and nightly PyPy
 ```
 
 # Caching packages dependencies

__tests__/check-python-path.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -euo pipefail
+
+PYTHON_PATH="$1"
+PATH_EXECUTABLE=$(python -c 'import sys; print(sys.executable)')
+PYTHON_PATH_EXECUTABLE=$("${PYTHON_PATH}" -c 'import sys; print(sys.executable)')
+if [ "${PATH_EXECUTABLE}" != "${PYTHON_PATH_EXECUTABLE}" ]; then
+    echo "Executable mismatch."
+    echo "python in PATH is: ${PATH_EXECUTABLE}"
+    echo "python-path (${PYTHON_PATH}) is: ${PYTHON_PATH_EXECUTABLE}"
+    exit 1
+fi
+echo "python-path: ${PYTHON_PATH}"

__tests__/find-pypy.test.ts

@@ -37,16 +37,34 @@ describe('parsePyPyVersion', () => {
     ['pypy-3.6-v7.x', {pythonVersion: '3.6', pypyVersion: 'v7.x'}],
     ['pypy-3.6', {pythonVersion: '3.6', pypyVersion: 'x'}],
     ['pypy-3.6-nightly', {pythonVersion: '3.6', pypyVersion: 'nightly'}],
-    ['pypy-3.6-v7.3.3rc1', {pythonVersion: '3.6', pypyVersion: 'v7.3.3-rc.1'}]
+    ['pypy-3.6-v7.3.3rc1', {pythonVersion: '3.6', pypyVersion: 'v7.3.3-rc.1'}],
+    ['pypy3.8-v7.3.7', {pythonVersion: '3.8', pypyVersion: 'v7.3.7'}],
+    ['pypy3.8-v7.3.x', {pythonVersion: '3.8', pypyVersion: 'v7.3.x'}],
+    ['pypy3.8-v7.x', {pythonVersion: '3.8', pypyVersion: 'v7.x'}],
+    ['pypy3.8', {pythonVersion: '3.8', pypyVersion: 'x'}],
+    ['pypy3.9-nightly', {pythonVersion: '3.9', pypyVersion: 'nightly'}],
+    ['pypy3.9-v7.3.8rc1', {pythonVersion: '3.9', pypyVersion: 'v7.3.8-rc.1'}]
   ])('%s -> %s', (input, expected) => {
     expect(finder.parsePyPyVersion(input)).toEqual(expected);
   });
 
-  it('throw on invalid input', () => {
+  it.each(['', 'pypy-', 'pypy', 'p', 'notpypy-'])(
-    expect(() => finder.parsePyPyVersion('pypy-')).toThrowError(
+    'throw on invalid input "%s"',
-      "Invalid 'version' property for PyPy. PyPy version should be specified as 'pypy-<python-version>'. See README for examples and documentation."
+    input => {
+      expect(() => finder.parsePyPyVersion(input)).toThrowError(
+        "Invalid 'version' property for PyPy. PyPy version should be specified as 'pypy<python-version>' or 'pypy-<python-version>'. See README for examples and documentation."
+      );
+    }
+  );
+
+  it.each(['pypy-2', 'pypy-3', 'pypy2', 'pypy3', 'pypy3.x', 'pypy3.8.10'])(
+    'throw on invalid input "%s"',
+    input => {
+      expect(() => finder.parsePyPyVersion(input)).toThrowError(
+        "Invalid format of Python version for PyPy. Python version should be specified in format 'x.y'. See README for examples and documentation."
+      );
+    }
   );
-  });
 });
 
 describe('getPyPyVersionFromPath', () => {

action.yml

@@ -4,8 +4,9 @@ description: 'Set up a specific version of Python and add the command-line tools
 author: 'GitHub'
 inputs:
   python-version:
-    description: "Version range or exact version of a Python version to use, using SemVer's version range syntax."
+    description: "Version range or exact version of Python to use, using SemVer's version range syntax. Reads from .python-version if unset."
-    default: '3.x'
+  python-version-file:
+    description: "File containing the Python version to use. Example: .python-version"
   cache:
     description: 'Used to specify a package manager for caching in the default directory. Supported values: pip, pipenv, poetry.'
     required: false
@@ -21,6 +22,8 @@ outputs:
     description: "The installed python version. Useful when given a version range as input."
   cache-hit:
     description: 'A boolean value to indicate a cache entry was found'
+  python-path:
+    description: "The absolute path to the Python executable."
 runs:
   using: 'node16'
   main: 'dist/setup/index.js'

package.json

@@ -1,6 +1,6 @@
 {
   "name": "setup-python",
-  "version": "3.1.1",
+  "version": "4.0.0",
   "private": true,
   "description": "Setup python action",
   "main": "dist/index.js",
@@ -35,7 +35,7 @@
     "@types/jest": "^27.0.2",
     "@types/node": "^16.11.25",
     "@types/semver": "^7.1.0",
-    "@zeit/ncc": "^0.22.0",
+    "@vercel/ncc": "^0.33.4",
     "husky": "^7.0.2",
     "jest": "^27.2.5",
     "jest-circus": "^27.2.5",

src/cache-distributions/poetry-cache.ts

@@ -58,7 +58,7 @@ class PoetryCache extends CacheDistributor {
     const config: any = {};
 
     for (let line of lines) {
-      line = line.replace(/#.*$/, '');
+      line = line.replace(/#.*$/gm, '');
 
       const [key, value] = line.split('=').map(part => part.trim());
 

src/find-pypy.ts

@@ -48,11 +48,18 @@ export async function findPyPyVersion(
 
   const pipDir = IS_WINDOWS ? 'Scripts' : 'bin';
   const _binDir = path.join(installDir, pipDir);
+  const binaryExtension = IS_WINDOWS ? '.exe' : '';
+  const pythonPath = path.join(
+    IS_WINDOWS ? installDir : _binDir,
+    `python${binaryExtension}`
+  );
   const pythonLocation = pypyInstall.getPyPyBinaryPath(installDir);
-  core.exportVariable('pythonLocation', pythonLocation);
+  core.exportVariable('pythonLocation', installDir);
+  core.exportVariable('PKG_CONFIG_PATH', pythonLocation + '/lib/pkgconfig');
   core.addPath(pythonLocation);
   core.addPath(_binDir);
   core.setOutput('python-version', 'pypy' + resolvedPyPyVersion.trim());
+  core.setOutput('python-path', pythonPath);
 
   return {resolvedPyPyVersion, resolvedPythonVersion};
 }
@@ -97,9 +104,14 @@ export function findPyPyToolCache(
 export function parsePyPyVersion(versionSpec: string): IPyPyVersionSpec {
   const versions = versionSpec.split('-').filter(item => !!item);
 
+  if (/^(pypy)(.+)/.test(versions[0])) {
+    let pythonVersion = versions[0].replace('pypy', '');
+    versions.splice(0, 1, 'pypy', pythonVersion);
+  }
+
   if (versions.length < 2 || versions[0] != 'pypy') {
     throw new Error(
-      "Invalid 'version' property for PyPy. PyPy version should be specified as 'pypy-<python-version>'. See README for examples and documentation."
+      "Invalid 'version' property for PyPy. PyPy version should be specified as 'pypy<python-version>' or 'pypy-<python-version>'. See README for examples and documentation."
     );
   }
 

src/find-python.ts

@@ -70,6 +70,7 @@ export async function useCpythonVersion(
   }
 
   core.exportVariable('pythonLocation', installDir);
+  core.exportVariable('PKG_CONFIG_PATH', installDir + '/lib/pkgconfig');
 
   if (IS_LINUX) {
     const libPath = process.env.LD_LIBRARY_PATH
@@ -82,8 +83,14 @@ export async function useCpythonVersion(
     }
   }
 
+  const _binDir = binDir(installDir);
+  const binaryExtension = IS_WINDOWS ? '.exe' : '';
+  const pythonPath = path.join(
+    IS_WINDOWS ? installDir : _binDir,
+    `python${binaryExtension}`
+  );
   core.addPath(installDir);
-  core.addPath(binDir(installDir));
+  core.addPath(_binDir);
 
   if (IS_WINDOWS) {
     // Add --user directory
@@ -105,18 +112,15 @@ export async function useCpythonVersion(
 
   const installed = versionFromPath(installDir);
   core.setOutput('python-version', installed);
+  core.setOutput('python-path', pythonPath);
 
   return {impl: 'CPython', version: installed};
 }
 
-/** Convert versions like `3.8-dev` to a version like `>= 3.8.0-a0`. */
+/** Convert versions like `3.8-dev` to a version like `~3.8.0-0`. */
 function desugarDevVersion(versionSpec: string) {
-  if (versionSpec.endsWith('-dev')) {
+  const devVersion = /^(\d+)\.(\d+)-dev$/;
-    const versionRoot = versionSpec.slice(0, -'-dev'.length);
+  return versionSpec.replace(devVersion, '~$1.$2.0-0');
-    return `>= ${versionRoot}.0-a0`;
-  } else {
-    return versionSpec;
-  }
 }
 
 /** Extracts python version from install path from hosted tool cache as described in README.md */

src/install-pypy.ts

@@ -98,7 +98,9 @@ async function createPyPySymlink(
 ) {
   const version = semver.coerce(pythonVersion)!;
   const pythonBinaryPostfix = semver.major(version);
+  const pythonMinor = semver.minor(version);
   const pypyBinaryPostfix = pythonBinaryPostfix === 2 ? '' : '3';
+  const pypyMajorMinorBinaryPostfix = `${pythonBinaryPostfix}.${pythonMinor}`;
   let binaryExtension = IS_WINDOWS ? '.exe' : '';
 
   core.info('Creating symlinks...');
@@ -115,6 +117,13 @@ async function createPyPySymlink(
     `python${binaryExtension}`,
     true
   );
+
+  createSymlinkInFolder(
+    pypyBinaryPath,
+    `pypy${pypyBinaryPostfix}${binaryExtension}`,
+    `pypy${pypyMajorMinorBinaryPostfix}${binaryExtension}`,
+    true
+  );
 }
 
 async function installPip(pythonLocation: string) {

src/setup-python.ts

@@ -3,11 +3,12 @@ import * as finder from './find-python';
 import * as finderPyPy from './find-pypy';
 import * as path from 'path';
 import * as os from 'os';
+import fs from 'fs';
 import {getCacheDistributor} from './cache-distributions/cache-factory';
 import {isCacheFeatureAvailable} from './utils';
 
 function isPyPyVersion(versionSpec: string) {
-  return versionSpec.startsWith('pypy-');
+  return versionSpec.startsWith('pypy');
 }
 
 async function cacheDependencies(cache: string, pythonVersion: string) {
@@ -21,9 +22,48 @@ async function cacheDependencies(cache: string, pythonVersion: string) {
   await cacheDistributor.restoreCache();
 }
 
+function resolveVersionInput(): string {
+  let version = core.getInput('python-version');
+  const versionFile = core.getInput('python-version-file');
+
+  if (version && versionFile) {
+    core.warning(
+      'Both python-version and python-version-file inputs are specified, only python-version will be used'
+    );
+  }
+
+  if (version) {
+    return version;
+  }
+
+  const versionFilePath = path.join(
+    process.env.GITHUB_WORKSPACE!,
+    versionFile || '.python-version'
+  );
+  if (!fs.existsSync(versionFilePath)) {
+    throw new Error(
+      `The specified python version file at: ${versionFilePath} does not exist`
+    );
+  }
+  version = fs.readFileSync(versionFilePath, 'utf8');
+  core.info(`Resolved ${versionFile} as ${version}`);
+
+  return version;
+}
+
 async function run() {
+  if (process.env.AGENT_TOOLSDIRECTORY?.trim()) {
+    core.debug(
+      `Python is expected to be installed into AGENT_TOOLSDIRECTORY=${process.env['AGENT_TOOLSDIRECTORY']}`
+    );
+    process.env['RUNNER_TOOL_CACHE'] = process.env['AGENT_TOOLSDIRECTORY'];
+  } else {
+    core.debug(
+      `Python is expected to be installed into RUNNER_TOOL_CACHE==${process.env['RUNNER_TOOL_CACHE']}`
+    );
+  }
   try {
-    const version = core.getInput('python-version');
+    const version = resolveVersionInput();
     if (version) {
       let pythonVersion: string;
       const arch: string = core.getInput('architecture') || os.arch();
@@ -34,11 +74,6 @@ async function run() {
           `Successfully set up PyPy ${installed.resolvedPyPyVersion} with Python (${installed.resolvedPythonVersion})`
         );
       } else {
-        if (version.trim().startsWith('2')) {
-          core.warning(
-            'The support for python 2.7 will be removed on June 19. Related issue: https://github.com/actions/setup-python/issues/672'
-          );
-        }
         const installed = await finder.useCpythonVersion(version, arch);
         pythonVersion = installed.version;
         core.info(`Successfully set up ${installed.impl} (${pythonVersion})`);
@@ -48,6 +83,10 @@ async function run() {
       if (cache && isCacheFeatureAvailable()) {
         await cacheDependencies(cache, pythonVersion);
       }
+    } else {
+      core.warning(
+        'The `python-version` input is not set.  The version of Python currently in `PATH` will be used.'
+      );
     }
     const matchersPath = path.join(__dirname, '../..', '.github');
     core.info(`##[add-matcher]${path.join(matchersPath, 'python.json')}`);