Merge pull request #17 from kishaningithub/experiment-uv

Use uv to install desired python version

Author: kishaningithub

.github/workflows/test.yml

@@ -6,13 +6,6 @@ on:
   pull_request:
     branches: [main]
 
-env:
-  # This is required to support GLIB versions present in amazon linux 2. Can be removed once amazon linux 2 is 💀
-  # More info
-  #  - https://github.com/actions/checkout/issues/1809#issuecomment-2208202462
-  #  - https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/
-  ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
-
 jobs:
   test_python_installation:
     strategy:
@@ -30,9 +23,11 @@ jobs:
     steps:
       - name: Setup runner
         run: |
-          yum install -y git tar gzip sudo which
+          yum install -y git sudo tar gzip which
 
-      - uses: actions/checkout@v3
+      - name: Checkout
+        run: |
+          git clone --depth 1 -b "${GITHUB_HEAD_REF:-$GITHUB_REF_NAME}" "https://github.com/${GITHUB_REPOSITORY}.git" .
 
       - name: Install python
         uses: ./
@@ -56,41 +51,6 @@ jobs:
           python --version 2>&1 | grep -F "${{ matrix.python-version }}"
           test "$(python3 -m pip --version)" = "$(pip --version)"
 
-  test_abstract_version_specification:
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - python-version: "3"
-            installed-python-version: "3.12.4"
-          - python-version: "3.12"
-            installed-python-version: "3.12.4"
-          - python-version: "3.11"
-            installed-python-version: "3.11.9"
-          - python-version: "3.10"
-            installed-python-version: "3.10.14"
-          - python-version: "3.9"
-            installed-python-version: "3.9.19"
-          - python-version: "3.8"
-            installed-python-version: "3.8.19"
-    runs-on: ubuntu-latest
-    container: amazonlinux:2023
-    steps:
-      - name: Setup runner
-        run: yum install -y git tar gzip sudo
-
-      - uses: actions/checkout@v3
-
-      - name: Install python
-        uses: ./
-        with:
-          python-version: "${{ matrix.python-version }}"
-
-      - name: Test installation
-        run: |
-          set -x
-          python3 --version 2>&1 | grep -F "${{ matrix.installed-python-version }}"
-
   test_pip_installs:
     strategy:
       fail-fast: false
@@ -103,9 +63,11 @@ jobs:
     steps:
       - name: Setup runner
         run: |
-          yum install -y git tar gzip sudo
+          yum install -y git sudo tar gzip which
 
-      - uses: actions/checkout@v3
+      - name: Checkout
+        run: |
+          git clone --depth 1 -b "${GITHUB_HEAD_REF:-$GITHUB_REF_NAME}" "https://github.com/${GITHUB_REPOSITORY}.git" .
 
       - name: Install python
         uses: ./
@@ -127,9 +89,11 @@ jobs:
     steps:
       - name: Setup runner
         run: |
-          yum install -y git tar gzip sudo
+          yum install -y git sudo tar gzip which
 
-      - uses: actions/checkout@v3
+      - name: Checkout
+        run: |
+          git clone --depth 1 -b "${GITHUB_HEAD_REF:-$GITHUB_REF_NAME}" "https://github.com/${GITHUB_REPOSITORY}.git" .
 
       - name: Create python version file
         run: |

action.yml

@@ -7,51 +7,48 @@ inputs:
     description: 'Version of python to be installed'
     default: '.python-version'
   cache:
-    description: Used to specify whether caching is needed. Set to true, if you'd like to enable caching.
-    required: true
+    description: > 
+      [Deprecated] Used to specify whether caching is needed. Set to true, if you'd like to enable caching.
+      Current implementation uses uv which pulls in pre-compiled binaries of python thereby eliminating the
+      need to cache compiled python artifacts.
     default: 'true'
+
 runs:
   using: "composite"
   steps:
-    - name: Ensure dependencies of python are installed
+    - name: Ensure system dependencies are installed
+      shell: bash
+      run: |
+        sudo yum install -y tar gzip which
+
+    - name: Install uv
       shell: bash
       run: |
-        ${GITHUB_ACTION_PATH}/install-system-dependencies.sh
+        curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/uv/releases/download/0.3.3/uv-installer.sh | sh
+        source $HOME/.cargo/env
+        uv self update
 
-    - name: Find exact python version
-      id: find-exact-python-version
+    - name: Find desired python version
+      id: find-desired-python-version
       shell: bash
       run: |
-        exact_python_version=$(${GITHUB_ACTION_PATH}/find-exact-python-version.sh "${{ inputs.python-version }}" "${{ inputs.python-version-file }}")
-        echo "exact_python_version=${exact_python_version}" >> $GITHUB_OUTPUT
+        desired_python_version=$(${GITHUB_ACTION_PATH}/find-desired-python-version.sh "${{ inputs.python-version }}" "${{ inputs.python-version-file }}")
+        echo "desired_python_version=${desired_python_version}" | tee -a "${GITHUB_OUTPUT}"
 
     - name: Set installation directory
       id: set-installation-directory
       shell: bash
       run: |
-        exact_python_version="${{ steps.find-exact-python-version.outputs.exact_python_version }}"
-        echo "installation_directory=${HOME}/.setup-python-amazon-linux/.python-versions/${exact_python_version}" >> $GITHUB_OUTPUT
-
-    - name: Cache
-      id: cache-python
-      uses: actions/cache@v3
-      if: inputs.cache == 'true'
-      with:
-        path: ${{ steps.set-installation-directory.outputs.installation_directory }}
-        key: python-${{ steps.find-exact-python-version.outputs.exact_python_version }}-${{ runner.arch }}
+        desired_python_version="${{ steps.find-desired-python-version.outputs.desired_python_version }}"
+        echo "installation_directory=${HOME}/.setup-python-amazon-linux/.python-versions/${desired_python_version}" | tee -a "${GITHUB_OUTPUT}"
 
     - id: setup-python
       shell: bash
-      if: inputs.cache == 'false' || (inputs.cache == 'true' && steps.cache-python.outputs.cache-hit != 'true')
       run: |
         installation_directory="${{ steps.set-installation-directory.outputs.installation_directory }}"
-        exact_python_version="${{ steps.find-exact-python-version.outputs.exact_python_version }}"
-
-        # Using a separate tmp directory instead of /tmp because in some OS images set a noexec option for the mount
-        # this is a better way compared to changing the mount options of /tmp
-        tmp_directory="${HOME}/.setup-python-amazon-linux/tmp"
+        desired_python_version="${{ steps.find-desired-python-version.outputs.desired_python_version }}"
 
-        ${GITHUB_ACTION_PATH}/install-python.sh "${exact_python_version}" "${installation_directory}" "${tmp_directory}"
+        uv venv --python "${desired_python_version}" "${installation_directory}"
 
     - name: Add python to PATH
       shell: bash
@@ -61,10 +58,15 @@ runs:
 
         echo "The following python binaries are now available in the PATH"
         ls "${installation_directory}/bin"
-        
-        echo "Linking python libraries..."
-        ls "${installation_directory}/lib"
-        sudo ldconfig "${installation_directory}/lib"
+
+    - name: Install pip
+      shell: bash
+      run: |
+        installation_directory="${{ steps.set-installation-directory.outputs.installation_directory }}"
+
+        python -m ensurepip --upgrade
+        ln -sf "${installation_directory}/bin/pip3" "${installation_directory}/bin/pip"
+        pip install --upgrade pip
 
 branding:
   icon: 'code'

find-desired-python-version.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+specified_version="$1"
+specified_version_file="$2"
+
+desired_python_version="${specified_version}"
+if [ -f "${specified_version_file}" ]; then
+  desired_python_version=$(cat "${specified_version_file}")
+fi
+
+echo "${desired_python_version}"