Functions/GenXdev.AI/EnsurePip.ps1
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Part of PowerShell module : GenXdev.AI Original cmdlet filename : EnsurePip.ps1 Original author : René Vaessen / GenXdev Version : 1.274.2025 ################################################################################ MIT License Copyright 2021-2025 GenXdev 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. ################################################################################> ############################################################################### <# .SYNOPSIS Ensures pip is installed and functional for the specified Python installation. .DESCRIPTION Verifies that pip is available and functional for the given Python executable. If pip is not available, attempts to install it using ensurepip. Validates pip functionality by checking version and basic operations. Returns $true if pip is ready; throws Write-Error on failure. .PARAMETER PythonPath The path to the Python executable. If not specified, uses the Python found in PATH. .PARAMETER Timeout Timeout in seconds for pip installation and verification. .PARAMETER Force Forces reinstallation/upgrade of pip. .EXAMPLE EnsurePip Ensures pip is available for the default Python installation. .EXAMPLE EnsurePip -PythonPath "C:\Python39\python.exe" -Force Forces pip installation for a specific Python executable. .EXAMPLE $pythonPath = EnsurePython EnsurePip -PythonPath $pythonPath Ensures pip for a specific Python installation returned by EnsurePython. #> function EnsurePip { [CmdletBinding()] param( ####################################################################### [Parameter( Mandatory = $false, Position = 0, HelpMessage = "Path to Python executable" )] [string] $PythonPath, ####################################################################### [Parameter( Mandatory = $false, HelpMessage = "Timeout in seconds for pip installation" )] [ValidateRange(30, 1800)] [int] $Timeout = 300, ####################################################################### [Parameter( Mandatory = $false, HelpMessage = "Forces reinstallation/upgrade of pip" )] [switch] $Force ####################################################################### ) begin { # initialize variables $pipAvailable = $false $stopwatch = [System.Diagnostics.Stopwatch]::StartNew() # show initial progress Microsoft.PowerShell.Utility\Write-Progress ` -Activity "pip Installation" ` -Status "Checking pip availability..." } process { # determine python path if (-not $PythonPath) { $pythonCmd = Microsoft.PowerShell.Core\Get-Command python -ErrorAction SilentlyContinue if (-not $pythonCmd) { Microsoft.PowerShell.Utility\Write-Error ` "Python not found in PATH. Please specify -PythonPath or ensure Python is installed." return } $PythonPath = $pythonCmd.Source } # verify python executable exists if (-not (Microsoft.PowerShell.Management\Test-Path -LiteralPath $PythonPath)) { Microsoft.PowerShell.Utility\Write-Error ` "Python executable not found at: ${PythonPath}" return } Microsoft.PowerShell.Utility\Write-Verbose ` "Using Python at: ${PythonPath}" # check if pip is already available (unless Force is specified) if (-not $Force) { Microsoft.PowerShell.Utility\Write-Progress ` -Activity "pip Installation" ` -Status "Checking existing pip installation..." ` -PercentComplete 25 # check pip via command line $pipversion = & $PythonPath -m pip --version 2>$null if ($pipversion) { Microsoft.PowerShell.Utility\Write-Verbose ` "pip already available: ${pipversion}" return $true } # fallback: check pip via Python import $pipcheck = & $PythonPath -c "import pip; print('pip', pip.__version__)" 2>$null if ($pipcheck) { Microsoft.PowerShell.Utility\Write-Verbose ` "pip detected via Python import: ${pipcheck}" return $true } } # install/upgrade pip using ensurepip Microsoft.PowerShell.Utility\Write-Progress ` -Activity "pip Installation" ` -Status "Installing pip via ensurepip..." ` -PercentComplete 50 Microsoft.PowerShell.Utility\Write-Verbose ` "Installing pip via ensurepip" try { $ensurepipArgs = @("-m", "ensurepip", "--default-pip") if ($Force) { $ensurepipArgs += "--upgrade" } $ensurepipOutput = & $PythonPath $ensurepipArgs 2>&1 Microsoft.PowerShell.Utility\Write-Verbose "ensurepip output: $ensurepipOutput" } catch { Microsoft.PowerShell.Utility\Write-Verbose "ensurepip failed: $($_.Exception.Message)" } # verify pip installation Microsoft.PowerShell.Utility\Write-Progress ` -Activity "pip Installation" ` -Status "Verifying pip installation..." ` -PercentComplete 75 # try pip command line again $pipversion = & $PythonPath -m pip --version 2>$null if ($pipversion) { Microsoft.PowerShell.Utility\Write-Verbose ` "pip successfully installed: ${pipversion}" $pipAvailable = $true } else { # try alternative pip check $pipcheck = & $PythonPath -c "import pip; print('pip', pip.__version__)" 2>$null if ($pipcheck) { Microsoft.PowerShell.Utility\Write-Verbose ` "pip available via Python import: ${pipcheck}" $pipAvailable = $true } else { Microsoft.PowerShell.Utility\Write-Error ` "Failed to install or verify pip. Try manually installing pip or reinstalling Python with pip support." return } } # upgrade pip if Force is specified and pip is available if ($Force -and $pipAvailable) { Microsoft.PowerShell.Utility\Write-Progress ` -Activity "pip Installation" ` -Status "Upgrading pip..." ` -PercentComplete 90 try { $upgradeOutput = & $PythonPath -m pip install --upgrade pip 2>&1 Microsoft.PowerShell.Utility\Write-Verbose "pip upgrade output: $upgradeOutput" } catch { Microsoft.PowerShell.Utility\Write-Verbose "pip upgrade failed: $($_.Exception.Message)" } } # check timeout if ($stopwatch.Elapsed.TotalSeconds -gt $Timeout) { Microsoft.PowerShell.Utility\Write-Error ` "pip installation timed out after ${Timeout} seconds." return } # final verification $finalPipVersion = & $PythonPath -m pip --version 2>$null if ($finalPipVersion) { Microsoft.PowerShell.Utility\Write-Verbose ` "Final pip verification: ${finalPipVersion}" } # complete progress Microsoft.PowerShell.Utility\Write-Progress ` -Activity "pip Installation" ` -Status "pip ready" ` -PercentComplete 100 return $pipAvailable } end { Microsoft.PowerShell.Utility\Write-Progress ` -Activity "pip Installation" ` -Completed } } ############################################################################### |