Function pip3Install

buildtools/setup_python.go:23–101

(ctx context.Context, pipConfig context.PythonConfig, libraries *[]string)

var PythonTool *pythonTool

func pip3Install(ctx context.Context, pipConfig context.PythonConfig, libraries *[]string) error {
	// Get python version from project config if available, otherwise use default version.
	pythonVersion := GetDefaultPythonVersion()
	pythonConfig := ctx.PythonConfig()
	if pythonConfig != nil && pythonConfig.GetVersion() != "" {
		pythonVersion = pythonConfig.GetVersion()
	}
	venvDir := getPythonVenvPath(pythonVersion, ctx.Project().GetName())

	// Setup python3 using conda.
	if err := setupPython(ctx, pythonVersion); err != nil {
		return fmt.Errorf("failed to setup python3 -> %w", err)
	}

	// Install extra tools. Check if package is already installed in PYTHONUSERBASE to avoid frequent PyPI requests.
	// PYTHONUSERBASE is already set globally, so pip will install to workspace directory.
	for _, library := range *libraries {
		if !strings.HasPrefix(library, "python3:") {
			continue
		}

		// Format python3 library name version.
		nameVersion := strings.TrimPrefix(library, "python3:")
		nameVersion = strings.ReplaceAll(nameVersion, "@", "==")

		// Check if package is already installed in PYTHONUSERBASE to avoid frequent PyPI requests.
		if isPackageInstalled(nameVersion, venvDir) {
			continue
		}

		// Build pip install command with PyPI source configuration.
		var builder strings.Builder

		// If Python needs LD_LIBRARY_PATH, prepend it to the command.
		if PythonTool.ldLibraryPath != "" {
			fmt.Fprintf(&builder, "LD_LIBRARY_PATH=%s ", PythonTool.ldLibraryPath)
		}

		builder.WriteString(PythonTool.Path)
		builder.WriteString(" -m pip install")

		// Add PyPI source configuration if available.
		if pipConfig != nil {
			if indexUrl := pipConfig.GetIndexUrl(); indexUrl != "" {
				builder.WriteString(" -i ")
				builder.WriteString(indexUrl)
			}
			for _, extraUrl := range pipConfig.GetExtraIndexUrls() {
				builder.WriteString(" --extra-index-url ")
				builder.WriteString(extraUrl)
			}
			for _, host := range pipConfig.GetTrustedHosts() {
				builder.WriteString(" --trusted-host ")
				builder.WriteString(host)
			}
		}

		builder.WriteString(" ")