build.yml

name: Build and Release Python Binary

on:
  workflow_dispatch:
    inputs:
      python_version:
        description: 'Python version to build (e.g., 3.9.18, 3.10.13, 3.11.7)'
        required: true
        default: '3.11.7'

jobs:
  build-python:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v3
      
    - name: Set architecture and build date
      run: |
        echo "RELEASE_TAG=python-${{ github.event.inputs.python_version }}-linux" >> $GITHUB_ENV
        echo "BUILD_DATE=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
        echo "ARCHITECTURE=$(uname -m)" >> $GITHUB_ENV
      
    - name: Cache apt packages
      uses: awalsh128/cache-apt-pkgs-action@latest
      with:
        packages: build-essential gdb lcov pkg-config libbz2-dev libffi-dev libgdbm-dev libgdbm-compat-dev liblzma-dev libncurses5-dev libreadline6-dev libsqlite3-dev libssl-dev lzma lzma-dev tk-dev uuid-dev zlib1g-dev wget curl llvm make dpkg-deb fakeroot
        version: 1.0

    - name: Download Python source
      run: |
        wget https://www.python.org/ftp/python/${{ github.event.inputs.python_version }}/Python-${{ github.event.inputs.python_version }}.tgz
        tar xzf Python-${{ github.event.inputs.python_version }}.tgz
        
    - name: Prepare build directory
      run: |
        mkdir -p python_install
        INSTALL_PATH=$(pwd)/python_install

    - name: Configure and build Python
      run: |
        cd Python-${{ github.event.inputs.python_version }}
        
        # Set optimization flags (using level 2 by default)
        OPT_FLAGS="--enable-optimizations --with-lto"
        
        # Configure Python build
        INSTALL_PATH=$(pwd)/../python_install
        ./configure --prefix=$INSTALL_PATH $OPT_FLAGS
        
        # Build and install
        make -j$(nproc)
        make install

        # Fix any remaining shebang issues
        PY_VERSION=$(echo ${{ github.event.inputs.python_version }} | cut -d. -f1,2)
        find "$INSTALL_PATH/bin" -type f -not -name "python*" -exec sed -i '1s|^#!.*/bin/python[0-9.]*|#!/usr/bin/env python'$PY_VERSION'|' {} \;

    - name: Remove unnecessary files
      run: |
        # Remove tests
        find python_install -type d -name "test" -o -name "tests" | xargs rm -rf
        find python_install -type d -name "__pycache__" | xargs rm -rf

        # Remove idle and other GUI tools if not needed
        rm -f python_install/bin/idle*

    - name: Create binary archives
      run: |
        PACKAGE_NAME="python-${{ github.event.inputs.python_version }}-linux-$(uname -m)"
        
        # Create tarball
        tar -czvf $PACKAGE_NAME.tar.gz -C python_install .
        
        # Create zip file
        cd python_install
        zip -r ../$PACKAGE_NAME.zip .
        cd ..
        
        echo "PACKAGE_NAME=$PACKAGE_NAME" >> $GITHUB_ENV

    - name: Create deb package
      run: |
        PACKAGE_NAME="python-${{ github.event.inputs.python_version }}-linux-$(uname -m)"
        PY_VERSION="${{ github.event.inputs.python_version }}"
        PY_MAJOR_MINOR=$(echo $PY_VERSION | cut -d. -f1,2)
        
        # Create deb package structure
        mkdir -p deb_package/DEBIAN
        mkdir -p deb_package/opt/python-$PY_VERSION
        
        # Copy Python installation to deb package structure
        cp -r python_install/* deb_package/opt/python-$PY_VERSION/
        
        # Create DEBIAN control file
        INSTALLED_SIZE=$(du -sk deb_package/opt | cut -f1)
        echo "Package: python${PY_MAJOR_MINOR}-custom" > deb_package/DEBIAN/control
        echo "Version: $PY_VERSION" >> deb_package/DEBIAN/control
        echo "Section: interpreters" >> deb_package/DEBIAN/control
        echo "Priority: optional" >> deb_package/DEBIAN/control
        echo "Architecture: amd64" >> deb_package/DEBIAN/control
        echo "Installed-Size: $INSTALLED_SIZE" >> deb_package/DEBIAN/control
        echo "Depends: libc6 (>= 2.17), libssl3 | libssl1.1, zlib1g, libbz2-1.0, libffi8 | libffi7 | libffi6, libgdbm6 | libgdbm5, liblzma5, libncurses6 | libncurses5, libreadline8 | libreadline7 | libreadline6, libsqlite3-0, uuid-runtime" >> deb_package/DEBIAN/control
        echo "Maintainer: anubhavkrishna1 <noreply@github.com>" >> deb_package/DEBIAN/control
        echo "Description: Custom Python $PY_VERSION interpreter" >> deb_package/DEBIAN/control
        echo " This package provides a custom-built Python $PY_VERSION interpreter" >> deb_package/DEBIAN/control
        echo " with optimizations enabled. Built from source with LTO and PGO" >> deb_package/DEBIAN/control
        echo " optimizations for better performance." >> deb_package/DEBIAN/control
        echo " ." >> deb_package/DEBIAN/control
        echo " The Python installation is located in /opt/python-$PY_VERSION/" >> deb_package/DEBIAN/control
        echo " and includes pip, setuptools, and wheel." >> deb_package/DEBIAN/control
        
        # Build deb package
        fakeroot dpkg-deb --build deb_package $PACKAGE_NAME.deb
        
    - name: Create checksum file
      run: |
        sha256sum ${{ env.PACKAGE_NAME }}.tar.gz ${{ env.PACKAGE_NAME }}.zip ${{ env.PACKAGE_NAME }}.deb > SHA256SUMS.txt
        
    - name: Create Release
      id: create_release
      uses: softprops/action-gh-release@v1
      with:
        tag_name: ${{ env.RELEASE_TAG }}
        name: Python ${{ github.event.inputs.python_version }} Linux Binary
        body: |
          Custom Python ${{ github.event.inputs.python_version }} binary build for Linux
          
          **Build Configuration:**
          - Python Version: ${{ github.event.inputs.python_version }}
          - Optimization Level: 2 (full optimizations with LTO)
          - With Pip/Setuptools/Wheel: Yes
          - Architecture: ${{ env.ARCHITECTURE }}
          - Build Date: ${{ env.BUILD_DATE }}
          - Built by: anubhavkrishna1
          
          **Available Formats:**
          - `.tar.gz` - Extract to any directory
          - `.zip` - Extract to any directory  
          - `.deb` - Debian/Ubuntu package (installs to /opt/python-${{ github.event.inputs.python_version }}/)
          
          **Installation:**
          - **Debian/Ubuntu**: `sudo dpkg -i ${{ env.PACKAGE_NAME }}.deb`
          - **Manual**: Extract tar.gz or zip to desired location
          
        draft: false
        prerelease: false
        files: |
          ${{ env.PACKAGE_NAME }}.tar.gz
          ${{ env.PACKAGE_NAME }}.zip
          ${{ env.PACKAGE_NAME }}.deb
          SHA256SUMS.txt
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}