PythonPip3Dsc.psm1
|
# Copyright (c) Microsoft Corporation. All rights reserved. # Licensed under the MIT License. using namespace System.Collections.Generic $global:usePip3Exe = $false $global:pip3ExePath = "$env:LOCALAPPDATA\Programs\Python\Python38\Scripts\pip3.exe" # Assert once that pip3 is already installed on the system. Assert-Pip3 enum Ensure { Absent Present } #region DSCResources [DSCResource()] class Pip3Package { # DSCResource requires a key. Do not set. [DscProperty(Key)] [string]$SID [DscProperty()] [Ensure] $Ensure = [Ensure]::Present [DscProperty(Mandatory)] [string[]]$Packages [DscProperty()] [string]$Arguments [DscProperty(NotConfigurable)] [bool]$InstalledStatus [DscProperty(NotConfigurable)] [string[]]$InstalledPackages [Pip3Package] Get() { $this.InstalledPackages = GetInstalledPip3Packages | ConvertFrom-Json | Select-Object -ExpandProperty name $this.InstalledStatus = $true foreach ($package in $this.Packages) { $this.InstalledStatus = $this.InstalledPackages -contains $package } return @{ SID = $this.SID Ensure = $this.Ensure Packages = $this.Packages Arguments = $this.Arguments InstalledStatus = $this.InstalledStatus InstalledPackages = $this.InstalledPackages } } [bool] Test() { $currentState = $this.Get() if ($currentState.Ensure -eq [Ensure]::Present) { return $currentState.InstalledStatus -eq $true } else { return $currentState.InstalledStatus -eq $false } } [void] Set() { $currentState = $this.Get() if ($currentState.Ensure -eq [Ensure]::Present) { if ($currentState.InstalledStatus -ne $true) { foreach ($package in $this.Packages) { if ($currentState.InstalledPackages -notcontains $package) { Invoke-Pip3Install -PackageName $package -Arguments $this.Arguments } } } } else { if ($currentState.InstalledStatus -ne $false) { foreach ($package in $this.Packages) { if ($currentState.InstalledPackages -contains $package) { Invoke-Pip3Uninstall -PackageName $package -Arguments $this.Arguments } } } } } } #endregion DSCResources #region Functions function Assert-Pip3 { # Try invoking pip3 help with the alias. If it fails, switch to calling npm.cmd directly. # This may occur if npm is installed in the same shell window and the alias is not updated until the shell window is restarted. try { Invoke-Pip3 -command 'help' return } catch {} if (Test-Path -Path $global:pip3ExePath) { $global:usePip3Exe = $true; Write-Host "Calling pip3.exe from default install location: $global:usePip3Exe" } else { throw "Python is not installed" } } function Invoke-Pip3Install { param ( [Parameter()] [string]$PackageName, [Parameter()] [string]$Arguments ) $command = [List[string]]::new() $command.Add("install") $command.Add($PackageName) $command.Add($Arguments) return Invoke-Pip3 -command $command } function Invoke-Pip3Uninstall { param ( [Parameter()] [string]$PackageName, [Parameter()] [string]$Arguments ) $command = [List[string]]::new() $command.Add("uninstall") $command.Add($PackageName) $command.Add($Arguments) # '--yes' is needed to ignore confrimation required for uninstalls $command.Add("--yes") return Invoke-Pip3 -command $command } function GetInstalledPip3Packages { $Arguments = [List[string]]::new() $Arguments.Add("list") $Arguments.Add("--format=json") $command; if ($global:usePip3Exe) { $command = "& '$global:pip3ExePath' " + $Arguments } else { $command = "& pip3 " + $Arguments } return Invoke-Expression -Command $command } function Invoke-Pip3 { param ( [Parameter(Mandatory)] [string]$command ) if ($global:usePip3Exe) { return Start-Process -FilePath $global:pip3ExePath -ArgumentList $command -Wait -PassThru -WindowStyle hidden } else { return Start-Process -FilePath pip3 -ArgumentList $command -Wait -PassThru -WindowStyle hidden } } #endregion Functions |