18 changed files with 7193 additions and 147574 deletions
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@ -1,7 +1,4 @@
-on:
-  push:
-    branches: [main]
-  pull_request:
+on: [push]

 name: Test Action

@ -10,25 +7,15 @@ jobs:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
-        os: [windows-latest, ubuntu-latest, macos-latest]
+        python-version: [3.7, 3.8, 3.9, "3.10"]
+        os: ["windows-latest", "ubuntu-latest"]
    name: Test the action
    steps:
      - uses: actions/checkout@v3
      - name: Setup PDM
        uses: ./
-        id: setup-pdm
        with:
          python-version: ${{ matrix.python-version }}
-          cache: true
-          allow-python-prereleases: true
-
-      - name: Check output
-        run: |
-          echo ${{ steps.setup-pdm.outputs.pdm-bin }}
-          echo ${{ steps.setup-pdm.outputs.pdm-version }}
-          echo ${{ steps.setup-pdm.outputs.python-path }}
-          echo ${{ steps.setup-pdm.outputs.python-version }}

      - name: Install dependencies
        run: pdm install -v && pdm info
--- a/.gitignore
+++ b/.gitignore
@ -1,4 +1,4 @@
 node_modules/
 yarn.lock
 __pypackages__/
-.pdm-python
+.pdm.toml
--- a/README.md
+++ b/README.md
@ -4,86 +4,27 @@ A GitHub Action that installs pdm properly for all Python versions

 ## Why do I need this action?

-Nowadays the main reason to use this action is that `actions/setup-python` [doesn't support](https://github.com/actions/setup-python/issues/587#issuecomment-1455797407) caching for PDM out of the box while `setup-pdm` does.
-
-Historically, this action made it easier to use PDM in repos where the Python version in use was older than the Python version required by PDM. PDM requires >=3.8 but works for projects using older versions.
+As you know, PDM requires Python 3.7 and higher to install the package, while till now(March 2021) Python 3.6 is still widely used by many libraries. The version requirement will prevent potential users from adopting PDM. However, it is a misunderstanding, PDM CAN run projects using Python 3.6 or even Python 2!
+But it is still not obvious and it is a pain for developers to properly build their CI workflows. So I made `pdm-project/setup-pdm` to solve the problem. It is PDM-for-CI done right!

 ## Usage

-Include the action in your workflow yaml:
+Include the action in your workflow yaml file with the following arguments:

 ```yaml
 steps:
-  - uses: actions/checkout@v4
-  - name: Setup PDM
-    uses: pdm-project/setup-pdm@v4
-    # You are now able to use PDM in your workflow
+    ...
+    - uses: pdm-project/setup-pdm@main
+      name: Setup PDM
+      with:
+        python-version: 3.8  # Version range or exact version of a Python version to use, the same as actions/setup-python
+        architecture: x64    # The target architecture (x86, x64) of the Python interpreter. the same as actions/setup-python
+        version: 1.4.0       # The version of PDM to install. Leave it as empty to use the latest version from PyPI
+        prerelease: true     # Allow prerelease versions to be installed
+        enable-pep582: true  # Enable PEP 582 package loading globally
    - name: Install dependencies
-    run: pdm install
+      run: pdm install       # Then you can use pdm in the following steps.
+    ...
 ```

 You don't need `actions/setup-python` actually.
-
-## Action Inputs
-
-This action supports the following inputs:
-
-| Input                      | Default               | Description                                                                                                                          |
-| -------------------------- | --------------------- | ------------------------------------------------------------------------------------------------------------------------------------ |
-| `python-version`           | Not specified         | Version range or exact version of a Python version to use, using SemVer's version range syntax.                                      |
-| `python-version-file`      | `pyproject.toml`      | File containing the Python version to use. Example: .`python-version`                                                                |
-| `architecture`             | `x64`                 | The target architecture (x86, x64, arm64) of the Python interpreter.                                                                        |
-| `allow-python-prereleases` | `false`               | Allow prerelease versions of Python to be installed.                                                                                 |
-| `token`                    | `${{ github.token }}` | Used to pull python distributions from actions/python-versions. Since there's a default, this is typically not supplied by the user. |
-| `version`                  | Not specified         | The version of PDM to install, or 'head' to install from the main branch.                                                            |
-| `prerelease`               | `false`               | Allow prerelease versions of PDM to be installed                                                                                     |
-| `enable-pep582`            | `false`               | Enable PEP 582 package loading globally.                                                                                             |
-| `cache`                    | `false`               | Cache PDM installation.                                                                                                              |
-| `cache-dependency-path`    | `pdm.lock`            | The dependency file(s) to cache.                                                                                                     |
-| `update-python`            | `true`                | Whether to update the environment with the requested Python                                                                          |
-
-## Action Outputs
-
-This action also exposes the following outputs:
-
-| Output           | Description                                                                       |
-| ---------------- | --------------------------------------------------------------------------------- |
-| `python-version` | The installed Python or PyPy version. Useful when given a version range as input. |
-| `python-path`    | The absolute path to the Python or PyPy executable.                               |
-| `pdm-version`    | The installed PDM version.                                                        |
-| `pdm-bin`        | The absolute path to the PDM executable.                                          |
-
-## Caches
-
-This action has a built-in cache support. You can use it like this:
-
-```yaml
- uses: pdm-project/setup-pdm@v3
-  with:
-    python-version: 3.9
-    cache: true
-```
-
-The default path to calculate the cache key is `./pdm.lock`, you can change it by setting the `cache-dependency-path` input.
-
-**Using a list of file paths to cache dependencies**
-
-```yaml
- uses: pdm-project/setup-pdm@v3
-  with:
-    python-version: 3.9
-    cache: true
-    cache-dependency-path: |
-      ./pdm.lock
-      ./pdm.new.lock
-```
-
-**Using a glob pattern to cache dependencies**
-
-```yaml
- uses: pdm-project/setup-pdm@v3
-  with:
-    python-version: 3.9
-    cache: true
-    cache-dependency-path: '**/pdm.lock'
-```
--- a/action.yml
+++ b/action.yml
@ -1,67 +1,36 @@
 ---
-name: Setup PDM
-description: Set up a specific version of PDM and uses a given Python version to work on
-author: Frost Ming
+name: "Setup PDM"
+description: "Set up a specific version of PDM and uses a given Python version to work on"
+author: "Frost Ming"
 inputs:
  python-version:
-    description: 'Version range or exact version of a Python version to use, using SemVer''s version range syntax.'
-  python-version-file:
-    description: 'File containing the Python version to use. Example: .python-version'
+    description: "Version range or exact version of a Python version to use, using SemVer's version range syntax."
+    default: "3.x"
+    required: true
  architecture:
-    description: 'The target architecture (x86, x64, arm64) of the Python interpreter.'
-    required: false
-  allow-python-prereleases:
-    description: Allow prerelease versions of Python to be installed.
-    default: 'false'
+    description: "The target architecture (x86, x64) of the Python interpreter."
    required: false
  token:
    description: Used to pull python distributions from actions/python-versions. Since there's a default, this is typically not supplied by the user.
    default: ${{ github.token }}
    required: false
  version:
-    description: The version of PDM to install, or 'head' to install from the main branch.
+    description: The version of PDM to install.
+    required: false
+  ref:
+    description: The Ref of GitHub Repository
    required: false
  prerelease:
    description: Allow prerelease versions to be installed
-    default: 'false'
+    default: "false"
    required: false
  enable-pep582:
-    description: Enable PEP 582 package loading globally.
-    default: 'false'
+    description: "Enable PEP 582 package loading globally."
+    default: "true"
    required: false
-  cache:
-    description: Cache PDM installation.
-    default: 'false'
-    required: false
-  cache-dependency-path:
-    description: The dependency file(s) to cache.
-    default: pdm.lock
-    required: false
-  cache-restore-exact-match:
-    description: >
-      Restore cache ONLY on exact match with the primary key.
-      Note: Post-installation cache will still be saved if cache is 'true'.
-    default: 'false'
-    required: false
-  update-python:
-    description: Whether to update the environment with the requested Python
-    default: 'true'
-outputs:
-  python-version:
-    description: The installed Python or PyPy version. Useful when given a version range as input.
-  python-path:
-    description: The absolute path to the Python or PyPy executable.
-  pdm-version:
-    description: The installed PDM version.
-  pdm-bin:
-    description: The absolute path to the PDM executable.
-  cache-hit:
-    description: Whether or not there was a cache hit.
 runs:
-  using: node20
-  main: dist/setup-pdm.js
-  post: dist/cache-save.js
-  post-if: success()
+  using: "node12"
+  main: "dist/setup-pdm.js"
 branding:
-  icon: code
-  color: green
+  icon: "code"
+  color: "green"
--- a/build.ts
+++ b/build.ts
@ -1,9 +0,0 @@
-import esbuild from 'esbuild'
-
-esbuild.build({
-  platform: 'node',
-  target: 'node20',
-  bundle: true,
-  entryPoints: ['src/setup-pdm.ts', 'src/cache-save.ts'],
-  outdir: 'dist',
-})
--- a/dist/cache-save.js
+++ b/dist/cache-save.js
--- a/dist/setup-pdm.js
+++ b/dist/setup-pdm.js
--- a/eslint.config.js
+++ b/eslint.config.js
@ -1,4 +0,0 @@
-// eslint.config.js
-const antfu = require('@antfu/eslint-config').default
-
-module.exports = antfu()
--- a/package.json
+++ b/package.json
@ -1,34 +1,25 @@
 {
  "name": "setup-pdm",
-  "version": "4.0.0",
-  "packageManager": "pnpm@8.14.3",
+  "version": "2.0.0",
  "description": "The GitHub Action for using pdm as the package manager",
+  "main": "dist/setup-pdm.js",
+  "scripts": {
+    "build": "esbuild src/setup-pdm.ts --bundle --platform=node --outfile=dist/setup-pdm.js"
+  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/pdm-project/setup-pdm.git"
  },
-  "main": "dist/setup-pdm.js",
-  "scripts": {
-    "build": "esno build.ts",
-    "lint": "eslint .",
-    "lint:fix": "eslint . --fix"
-  },
  "dependencies": {
-    "@actions/cache": "^4.0.3",
-    "@actions/core": "^1.10.1",
-    "@actions/exec": "^1.1.1",
-    "@actions/glob": "^0.4.0",
-    "got": "^14.0.0",
-    "semver": "^7.5.4",
+    "@actions/core": "^1.2.6",
+    "@actions/exec": "^1.0.4",
+    "semver": "^7.3.7",
    "setup-python": "actions/setup-python"
  },
  "devDependencies": {
-    "@antfu/eslint-config": "^2.4.6",
-    "@types/node": "^18.11.0",
-    "@types/semver": "^7.5.4",
-    "esbuild": "^0.19.12",
-    "eslint": "^8.56.0",
-    "esno": "^4.0.0",
-    "typescript": "^4.8.4"
+    "@types/node": "^14.14.31",
+    "@types/semver": "^7.3.4",
+    "esbuild": "^0.9.0",
+    "typescript": "^4.2.2"
  }
 }
--- a/pdm.lock
+++ b/pdm.lock
@ -1,70 +1,54 @@
-# This file is @generated by PDM.
-# It is not intended for manual editing.
-
-[metadata]
-groups = ["default", "dev"]
-strategy = ["inherit_metadata"]
-lock_version = "4.5.0"
-content_hash = "sha256:c7bc8c77abe4c890545158d7bfdd811dce4a2658fa8ab856aa152f869973efab"
-
-[[metadata.targets]]
-requires_python = ">=3.9"
-
 [[package]]
 name = "certifi"
-version = "2023.11.17"
+version = "2022.6.15"
 requires_python = ">=3.6"
 summary = "Python package for providing Mozilla's CA Bundle."
-groups = ["dev"]
-marker = "python_version == \"3.9\""
-files = [
-    {file = "certifi-2023.11.17-py3-none-any.whl", hash = "sha256:e036ab49d5b79556f99cfc2d9320b34cfbe5be05c5871b51de9329f0603b0474"},
-    {file = "certifi-2023.11.17.tar.gz", hash = "sha256:9b469f3a900bf28dc19b8cfbf8019bf47f7fdd1a65a1d4ffb98fc14166beb4d1"},
-]
+
+[[package]]
+name = "chardet"
+version = "5.0.0"
+requires_python = ">=3.6"
+summary = "Universal encoding detector for Python 3"
+
+[[package]]
+name = "idna"
+version = "3.3"
+requires_python = ">=3.5"
+summary = "Internationalized Domain Names in Applications (IDNA)"

 [[package]]
 name = "pytz"
-version = "2023.3.post1"
+version = "2022.1"
 summary = "World timezone definitions, modern and historical"
-groups = ["dev"]
-marker = "python_version == \"3.10\""
-files = [
-    {file = "pytz-2023.3.post1-py2.py3-none-any.whl", hash = "sha256:ce42d816b81b68506614c11e8937d3aa9e41007ceb50bfdcb0749b921bf646c7"},
-    {file = "pytz-2023.3.post1.tar.gz", hash = "sha256:7b4fddbeb94a1eba4b557da24f19fdf9db575192544270a9101d8509f9f43d7b"},
-]
-
-[[package]]
-name = "setuptools"
-version = "69.0.3"
-requires_python = ">=3.8"
-summary = "Easily download, build, install, upgrade, and uninstall Python packages"
-groups = ["dev"]
-marker = "python_version == \"3.11\""
-files = [
-    {file = "setuptools-69.0.3-py3-none-any.whl", hash = "sha256:385eb4edd9c9d5c17540511303e39a147ce2fc04bc55289c322b9e5904fe2c05"},
-    {file = "setuptools-69.0.3.tar.gz", hash = "sha256:be1af57fc409f93647f2e8e4573a142ed38724b8cdd389706a867bb4efcf1e78"},
-]
-
-[[package]]
-name = "six"
-version = "1.16.0"
-requires_python = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
-summary = "Python 2 and 3 compatibility utilities"
-groups = ["dev"]
-marker = "python_version == \"3.12\""
-files = [
-    {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
-    {file = "six-1.16.0.tar.gz", hash = "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926"},
-]

 [[package]]
 name = "urllib3"
-version = "2.1.0"
-requires_python = ">=3.8"
+version = "1.26.10"
+requires_python = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, <4"
 summary = "HTTP library with thread-safe connection pooling, file post, and more."
-groups = ["dev"]
-marker = "python_version == \"3.13\""
-files = [
-    {file = "urllib3-2.1.0-py3-none-any.whl", hash = "sha256:55901e917a5896a349ff771be919f8bd99aff50b79fe58fec595eb37bbc56bb3"},
-    {file = "urllib3-2.1.0.tar.gz", hash = "sha256:df7aa8afb0148fa78488e7899b2c59b5f4ffcfa82e6c54ccb9dd37c1d7b52d54"},
+
+[metadata]
+lock_version = "4.0"
+content_hash = "sha256:9386b3d6ac959508ef3cf75fdab7c82bd440c0a79841a0786d71c1e42a58b24d"
+
+[metadata.files]
+"certifi 2022.6.15" = [
+    {url = "https://files.pythonhosted.org/packages/e9/06/d3d367b7af6305b16f0d28ae2aaeb86154fa91f144f036c2d5002a5a202b/certifi-2022.6.15-py3-none-any.whl", hash = "sha256:fe86415d55e84719d75f8b69414f6438ac3547d2078ab91b67e779ef69378412"},
+    {url = "https://files.pythonhosted.org/packages/cc/85/319a8a684e8ac6d87a1193090e06b6bbb302717496380e225ee10487c888/certifi-2022.6.15.tar.gz", hash = "sha256:84c85a9078b11105f04f3036a9482ae10e4621616db313fe045dd24743a0820d"},
+]
+"chardet 5.0.0" = [
+    {url = "https://files.pythonhosted.org/packages/4c/d1/1b96dd69fa42f20b70701b5cd42a75dd5f0c7a24dc0abfef35cc146210dc/chardet-5.0.0-py3-none-any.whl", hash = "sha256:d3e64f022d254183001eccc5db4040520c0f23b1a3f33d6413e099eb7f126557"},
+    {url = "https://files.pythonhosted.org/packages/31/a2/12c090713b3d0e141f367236d3a8bdc3e5fca0d83ff3647af4892c16c205/chardet-5.0.0.tar.gz", hash = "sha256:0368df2bfd78b5fc20572bb4e9bb7fb53e2c094f60ae9993339e8671d0afb8aa"},
+]
+"idna 3.3" = [
+    {url = "https://files.pythonhosted.org/packages/04/a2/d918dcd22354d8958fe113e1a3630137e0fc8b44859ade3063982eacd2a4/idna-3.3-py3-none-any.whl", hash = "sha256:84d9dd047ffa80596e0f246e2eab0b391788b0503584e8945f2368256d2735ff"},
+    {url = "https://files.pythonhosted.org/packages/62/08/e3fc7c8161090f742f504f40b1bccbfc544d4a4e09eb774bf40aafce5436/idna-3.3.tar.gz", hash = "sha256:9d643ff0a55b762d5cdb124b8eaa99c66322e2157b69160bc32796e824360e6d"},
+]
+"pytz 2022.1" = [
+    {url = "https://files.pythonhosted.org/packages/60/2e/dec1cc18c51b8df33c7c4d0a321b084cf38e1733b98f9d15018880fb4970/pytz-2022.1-py2.py3-none-any.whl", hash = "sha256:e68985985296d9a66a881eb3193b0906246245294a881e7c8afe623866ac6a5c"},
+    {url = "https://files.pythonhosted.org/packages/2f/5f/a0f653311adff905bbcaa6d3dfaf97edcf4d26138393c6ccd37a484851fb/pytz-2022.1.tar.gz", hash = "sha256:1e760e2fe6a8163bc0b3d9a19c4f84342afa0a2affebfaa84b01b978a02ecaa7"},
+]
+"urllib3 1.26.10" = [
+    {url = "https://files.pythonhosted.org/packages/68/47/93d3d28e97c7577f563903907912f4b3804054e4877a5ba6651f7182c53b/urllib3-1.26.10-py2.py3-none-any.whl", hash = "sha256:8298d6d56d39be0e3bc13c1c97d133f9b45d797169a0e11cdd0e0489d786f7ec"},
+    {url = "https://files.pythonhosted.org/packages/25/36/f056e5f1389004cf886bb7a8514077f24224238a7534497c014a6b9ac770/urllib3-1.26.10.tar.gz", hash = "sha256:879ba4d1e89654d9769ce13121e0f94310ea32e8d2f8cf587b77c08bbcdb30d6"},
 ]
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
--- a/pyproject.toml
+++ b/pyproject.toml
@ -1,18 +1,27 @@
 [project]
-name = "setup-pdm"
-version = "0.0.0"
-authors = [ { name = "Frost Ming", email = "mianghong@gmail.com" }, ]
-requires-python = ">=3.9"
+authors = [
+    {name = "Frost Ming", email = "mianghong@gmail.com"},
+]
+include = "test.py"
+requires-python = ">=3.6"
+dynamic = ["classifiers"]
 license = {text = "MIT"}

+[project.urls]
+homepage = ""
+
+[tool]
 [tool.pdm]
-distribution = false

 [tool.pdm.dev-dependencies]
 dev = [
+    "idna; python_version=='3.6'",
+    "chardet; python_version=='3.7'",
+    "urllib3; python_version=='3.8'",
    "certifi; python_version=='3.9'",
-    "pytz; python_version=='3.10'",
-    "setuptools; python_version=='3.11'",
-    "six; python_version=='3.12'",
-    "urllib3; python_version=='3.13'",
+    "pytz; python_version=='3.10'"
 ]
+
+[build-system]
+requires = ["pdm-pep517"]
+build-backend = "pdm.pep517.api"
--- a/src/cache-save.ts
+++ b/src/cache-save.ts
@ -1,48 +0,0 @@
-import fs from 'node:fs'
-import * as core from '@actions/core'
-import * as cache from '@actions/cache'
-
-async function run() {
-  try {
-    const cache = core.getBooleanInput('cache')
-    if (cache)
-      await saveCache()
-  }
-  catch (error) {
-    const err = error as Error
-    core.setFailed(err.message)
-  }
-  // Explicit process.exit() to not wait for hanging promises,
-  // see https://github.com/actions/setup-node/issues/878
-  process.exit()
-}
-
-async function saveCache() {
-  const cachePaths = JSON.parse(core.getState('cache-paths')) as string[]
-
-  core.debug(`paths for caching are ${cachePaths.join(', ')}`)
-
-  if (cachePaths.every(path => !fs.existsSync(path)))
-    throw new Error(`Cache folder path is retrieved for pdm but doesn't exist on disk: ${cachePaths.join(', ')}`)
-
-  const primaryKey = core.getState('cache-primary-key')
-  const matchedKey = core.getState('cache-matched-key')
-
-  if (!primaryKey) {
-    core.warning('Error retrieving key from state.')
-    return
-  }
-  else if (matchedKey === primaryKey) {
-    // no change in target directories
-    core.info(`Cache hit occurred on the primary key ${primaryKey}, not saving cache.`)
-    return
-  }
-
-  const cacheId = await cache.saveCache(cachePaths, primaryKey)
-  if (cacheId === -1)
-    return
-
-  core.info(`Cache saved with the key: ${primaryKey}`)
-}
-
-run()
--- a/src/caches.ts
+++ b/src/caches.ts
@ -1,63 +0,0 @@
-import path from 'node:path'
-import process from 'node:process'
-import * as core from '@actions/core'
-import * as cache from '@actions/cache'
-import { hashFiles } from '@actions/glob'
-import { getOutput } from './utils'
-
-async function calculateCacheKeys(pythonVersion: string, cacheDependencyPath: string): Promise<{ primaryKey: string, restoreKeys: string[] }> {
-  const hash = await hashFiles(cacheDependencyPath)
-  const primaryKey = `setup-pdm-${process.env.RUNNER_OS}-${process.env.RUNNER_ARCH}-python-${pythonVersion}-${hash}`
-  const restoreKey = `setup-pdm-${process.env.RUNNER_OS}-${process.env.RUNNER_ARCH}-python-${pythonVersion}-`
-
-  const restoreExactMatch = core.getBooleanInput('cache-restore-exact-match')
-  if (restoreExactMatch) {
-    return { primaryKey, restoreKeys: [] }
-  }
-
-  return { primaryKey, restoreKeys: [restoreKey] }
-}
-
-async function cacheDependencies(pdmBin: string, pythonVersion: string) {
-  const cacheDependencyPath = core.getInput('cache-dependency-path') || 'pdm.lock'
-  const { primaryKey, restoreKeys } = await calculateCacheKeys(pythonVersion, cacheDependencyPath)
-  if (primaryKey.endsWith('-')) {
-    throw new Error(
-      `No file in ${process.cwd()} matched to [${cacheDependencyPath
-        .split('\n')
-        .join(',')}], make sure you have checked out the target repository`,
-    )
-  }
-
-  const cachePath = await getCacheDirectories(pdmBin)
-
-  core.saveState('cache-paths', cachePath)
-  core.saveState('cache-primary-key', primaryKey)
-
-  const matchedKey = await cache.restoreCache(cachePath, primaryKey, restoreKeys)
-
-  handleMatchResult(matchedKey, primaryKey)
-}
-
-async function getCacheDirectories(pdmBin: string): Promise<string[]> {
-  const paths = [
-    path.join(process.cwd(), '.venv'),
-    path.join(process.cwd(), '__pypackages__'),
-  ]
-  paths.push(await getOutput(pdmBin, ['config', 'cache_dir']))
-  paths.push(await getOutput(pdmBin, ['config', 'venv.location']))
-  return paths
-}
-
-function handleMatchResult(matchedKey: string | undefined, primaryKey: string) {
-  if (matchedKey) {
-    core.saveState('cache-matched-key', matchedKey)
-    core.info(`Cache restored from key: ${matchedKey}`)
-  }
-  else {
-    core.info(`pdm cache is not found`)
-  }
-  core.setOutput('cache-hit', matchedKey === primaryKey)
-}
-
-export { cacheDependencies }
--- a/src/setup-pdm.ts
+++ b/src/setup-pdm.ts
@ -1,75 +1,58 @@
-import * as os from 'node:os'
-import path from 'node:path'
-import { promises as fs } from 'node:fs'
-import process from 'node:process'
 import * as core from '@actions/core'
-import { exec } from '@actions/exec'
+import * as exec from '@actions/exec'
+import * as setupPython from 'setup-python/src/find-python'
 import { IS_WINDOWS } from 'setup-python/src/utils'
+import * as os from 'os'
+import { promises as fs } from 'fs'
+import path from 'path'
 import semParse from 'semver/functions/parse'
-import * as utils from './utils'
-import { cacheDependencies } from './caches'
+import semIntersect from 'semver/ranges/intersects'

-const INSTALL_SCRIPT_URL = 'https://pdm.fming.dev/install-pdm.py'
-interface InstallOutput {
-  pdm_version: string
-  pdm_bin: string
-  install_python_version: string
-  install_location: string
-}
+const PDM_PYTHON_REQUIRES = '>=3.7'
+const FALLBACK_INSTALL_VERSION = '3.10'
+const GITHUB_REPO = 'https://github.com/pdm-project/pdm.git'

-function getPep582Path(installDir: string, pythonVersion: string): string {
-  const parsedVersion = semParse(pythonVersion)!
-  if (IS_WINDOWS)
+function getPep582Path(version: string): string {
+  const installDir = process.env.pythonLocation || ''
+  const parsedVersion = semParse(version)!
+  if (IS_WINDOWS) {
    return path.resolve(installDir, 'Lib/site-packages/pdm/pep582')
-  else
+  } else {
    return path.resolve(installDir, 'lib', `python${parsedVersion.major}.${parsedVersion.minor}`, 'site-packages/pdm/pep582')
  }
+}

 async function run(): Promise<void> {
  const arch = core.getInput('architecture') || os.arch()
  const pdmVersion = core.getInput('version')
-  const pythonVersion = utils.resolveVersionInput()[0] || '3.x'
-  const updateEnvironment = core.getBooleanInput('update-python')
-  const allowPythonPreReleases = core.getBooleanInput('allow-python-prereleases')
-  const cmdArgs = ['-']
-  if (core.getBooleanInput('prerelease'))
-    cmdArgs.push('--prerelease')
-
-  if (pdmVersion)
-    cmdArgs.push('--version', pdmVersion)
-
-  cmdArgs.push('-o', 'install-output.json')
-  // Use the default python version installed with the runner
+  const pythonVersion = core.getInput('python-version')
+  const versionCompatible = semIntersect(PDM_PYTHON_REQUIRES, pythonVersion)
+  const ref = core.getInput('ref')
+  const pdmPackage = pdmVersion ? `pdm==${pdmVersion}` : ref ? `pdm @ git+${GITHUB_REPO}@${ref}` : 'pdm'
+  const cmdArgs = ['-m', 'pip', 'install', '-U', pdmPackage]
+  if (core.getInput('prerelease') === 'true') {
+    cmdArgs.push('--pre')
+  }
  try {
-    const installedPython = await utils.findPythonVersion(pythonVersion, arch, allowPythonPreReleases, updateEnvironment)
-
+    let installedPython = await setupPython.findPythonVersion(versionCompatible ? pythonVersion : FALLBACK_INSTALL_VERSION, arch)
+    await exec.exec('python', cmdArgs)
+    if (core.getInput('enable-pep582') === 'true') {
+      core.exportVariable('PYTHONPATH', getPep582Path(installedPython.version))
+    }
+    if (!versionCompatible) {
+      installedPython = await setupPython.findPythonVersion(pythonVersion, arch)
+    }
+    const pythonBin = path.join(process.env.pythonLocation as string, IS_WINDOWS ? 'python.exe' : 'bin/python').replace(/\\/g, '/')
+    await fs.writeFile('.pdm.toml', `[python]\npath="${pythonBin}"\n`)
+    const { stdout: pdmVersionOutput } = await exec.getExecOutput('pdm --version')
    if (process.platform === 'linux') {
      // See https://github.com/actions/virtual-environments/issues/2803
-      if (process.arch === 'x64') {
      core.exportVariable('LD_PRELOAD', '/lib/x86_64-linux-gnu/libgcc_s.so.1')
    }
-      else if (process.arch === 'arm64') {
-        core.exportVariable('LD_PRELOAD', '/lib/aarch64-linux-gnu/libgcc_s.so.1')
-      }
-    }
-    await exec(IS_WINDOWS ? 'python' : 'python3', cmdArgs, { input: await utils.fetchUrlAsBuffer(INSTALL_SCRIPT_URL) })
-    const installOutput: InstallOutput = JSON.parse(await utils.readFile('install-output.json'))
-    core.debug(`Install output: ${installOutput}`)
-    core.info(`Successfully setup ${installOutput.pdm_version} with Python ${installedPython}`)
-    core.setOutput('pdm-version', installOutput.pdm_version)
-    core.setOutput('pdm-bin', path.join(installOutput.install_location, installOutput.pdm_bin))
-    core.addPath(path.dirname(installOutput.pdm_bin))
-    if (core.getBooleanInput('enable-pep582'))
-      core.exportVariable('PYTHONPATH', getPep582Path(installOutput.install_location, installOutput.install_python_version))
-
+    core.info(`Successfully setup ${pdmVersionOutput} with Python ${installedPython.version}`)
    const matchersPath = path.join(__dirname, '..', '.github')
    core.info(`##[add-matcher]${path.join(matchersPath, 'python.json')}`)
-    if (utils.isCacheAvailable())
-      await cacheDependencies(installOutput.pdm_bin, installedPython)
-
-    await fs.rm('install-output.json')
-  }
-  catch (error: any) {
+  } catch (error: any) {
    core.setFailed(error.message)
  }
 }
--- a/src/utils.ts
+++ b/src/utils.ts
@ -1,123 +0,0 @@
-import fs from 'node:fs'
-import { Buffer } from 'node:buffer'
-import * as core from '@actions/core'
-import * as cache from '@actions/cache'
-import got from 'got'
-import { useCpythonVersion } from 'setup-python/src/find-python'
-import { findPyPyVersion } from 'setup-python/src/find-pypy'
-import {
-  getVersionInputFromFile,
-  getVersionInputFromTomlFile,
-  logWarning,
-} from 'setup-python/src/utils'
-import { getExecOutput } from '@actions/exec'
-
-function isPyPyVersion(versionSpec: string): boolean {
-  return versionSpec.startsWith('pypy')
-}
-
-export async function fetchUrlAsBuffer(url: string): Promise<Buffer> {
-  const response = await got(url)
-  if (!response.ok)
-    throw new Error(`Failed to fetch ${url}`)
-
-  return Buffer.from(response.body)
-}
-
-export async function findPythonVersion(version: string, architecture: string, allowPreReleases: boolean, updateEnvironment: boolean = true): Promise<string> {
-  let pythonVersion = ''
-  if (isPyPyVersion(version)) {
-    const installed = await findPyPyVersion(
-      version,
-      architecture,
-      updateEnvironment,
-      false,
-      allowPreReleases,
-    )
-    pythonVersion = `${installed.resolvedPyPyVersion}-${installed.resolvedPythonVersion}`
-    core.info(
-      `Successfully set up PyPy ${installed.resolvedPyPyVersion} with Python (${installed.resolvedPythonVersion})`,
-    )
-    return `pypy-${installed.resolvedPythonVersion}`
-  }
-  else {
-    const installed = await useCpythonVersion(
-      version,
-      architecture,
-      updateEnvironment,
-      false,
-      allowPreReleases,
-    )
-    pythonVersion = installed.version
-    core.info(`Successfully set up ${installed.impl} (${pythonVersion})`)
-    return installed.version
-  }
-}
-
-export async function readFile(filePath: string): Promise<string> {
-  return await fs.promises.readFile(filePath, 'utf8')
-}
-
-export async function getOutput(command: string, args: string[]): Promise<string> {
-  const { stdout, exitCode, stderr } = await getExecOutput(command, args)
-  if (exitCode && stderr)
-    throw new Error(`Could not run ${command} ${args.join(' ')}: ${stderr}`)
-
-  return stdout.trim()
-}
-
-export function isCacheAvailable(): boolean {
-  if (!core.getBooleanInput('cache'))
-    return false
-
-  if (!cache.isFeatureAvailable()) {
-    core.warning('Caching is not supported on this platform.')
-    return false
-  }
-
-  return true
-}
-
-function resolveVersionInputFromDefaultFile(): string[] {
-  const couples: [string, (versionFile: string) => string[]][] = [
-    ['pyproject.toml', getVersionInputFromTomlFile],
-  ]
-  for (const [versionFile, _fn] of couples) {
-    logWarning(
-      `Neither 'python-version' nor 'python-version-file' inputs were supplied. Attempting to find '${versionFile}' file.`,
-    )
-    if (fs.existsSync(versionFile))
-      return _fn(versionFile)
-    else
-      logWarning(`${versionFile} doesn't exist.`)
-  }
-  return []
-}
-
-export function resolveVersionInput() {
-  let versions = core.getMultilineInput('python-version')
-  const versionFile = core.getInput('python-version-file')
-
-  if (versions.length) {
-    if (versionFile) {
-      core.warning(
-        'Both python-version and python-version-file inputs are specified, only python-version will be used.',
-      )
-    }
-  }
-  else {
-    if (versionFile) {
-      if (!fs.existsSync(versionFile)) {
-        throw new Error(
-          `The specified python version file at: ${versionFile} doesn't exist.`,
-        )
-      }
-      versions = getVersionInputFromFile(versionFile)
-    }
-    else {
-      versions = resolveVersionInputFromDefaultFile()
-    }
-  }
-
-  return versions
-}
--- a/test.py
+++ b/test.py
@ -1,14 +1,15 @@
-import importlib
 import os
 import sys
 import unittest
+import importlib
+

 PACKAGE_MAP = {
+    "3.6": "idna",
+    "3.7": "chardet",
+    "3.8": "urllib3",
    "3.9": "certifi",
    "3.10": "pytz",
-    "3.11": "setuptools",
-    "3.12": "six",
-    "3.13": "urllib3",
 }


--- a/tsconfig.json
+++ b/tsconfig.json
@ -2,9 +2,17 @@
  "compilerOptions": {
    /* Basic Options */
    // "incremental": true,                   /* Enable incremental compilation */
-    "target": "ESNext" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
+    "target": "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
+    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
+    "allowJs": true /* Allow javascript files to be compiled. */,
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    "outDir": "./dist" /* Redirect output structure to the directory. */,
    "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
-    "module": "CommonJS" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
    // "composite": true,                     /* Enable project compilation */
    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
    // "removeComments": true,                /* Do not emit comments to output. */
@ -15,14 +23,6 @@

    /* Strict Type-Checking Options */
    "strict": true /* Enable all strict type-checking options. */,
-    // "allowJs": true /* Allow javascript files to be compiled. */,
-    // "checkJs": true,                       /* Report errors in .js files. */
-    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
-    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
-    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
-    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
-    // "outFile": "./",                       /* Concatenate and emit output to single file. */
-    "outDir": "./lib" /* Redirect output structure to the directory. */,
    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
    // "strictNullChecks": true,              /* Enable strict null checks. */
    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */