Created
February 12, 2024 12:51
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$VerbosePreference = 'Continue' | |
if (-not $env:ChocolateyInstall) { | |
$message = @( | |
"The ChocolateyInstall environment variable was not found." | |
"Chocolatey is not detected as installed. Nothing to do." | |
) -join "`n" | |
Write-Warning $message | |
return | |
} | |
if (-not (Test-Path $env:ChocolateyInstall)) { | |
$message = @( | |
"No Chocolatey installation detected at '$env:ChocolateyInstall'." | |
"Nothing to do." | |
) -join "`n" | |
Write-Warning $message | |
return | |
} | |
<# | |
Using the .NET registry calls is necessary here in order to preserve environment variables embedded in PATH values; | |
Powershell's registry provider doesn't provide a method of preserving variable references, and we don't want to | |
accidentally overwrite them with absolute path values. Where the registry allows us to see "%SystemRoot%" in a PATH | |
entry, PowerShell's registry provider only sees "C:\Windows", for example. | |
#> | |
$userKey = [Microsoft.Win32.Registry]::CurrentUser.OpenSubKey('Environment',$true) | |
$userPath = $userKey.GetValue('PATH', [string]::Empty, 'DoNotExpandEnvironmentNames').ToString() | |
$machineKey = [Microsoft.Win32.Registry]::LocalMachine.OpenSubKey('SYSTEM\ControlSet001\Control\Session Manager\Environment\',$true) | |
$machinePath = $machineKey.GetValue('PATH', [string]::Empty, 'DoNotExpandEnvironmentNames').ToString() | |
$backupPATHs = @( | |
"User PATH: $userPath" | |
"Machine PATH: $machinePath" | |
) | |
$backupFile = "C:\PATH_backups_ChocolateyUninstall.txt" | |
$backupPATHs | Set-Content -Path $backupFile -Encoding UTF8 -Force | |
$warningMessage = @" | |
This could cause issues after reboot where nothing is found if something goes wrong. | |
In that case, look at the backup file for the original PATH values in '$backupFile'. | |
"@ | |
if ($userPath -like "*$env:ChocolateyInstall*") { | |
Write-Verbose "Chocolatey Install location found in User Path. Removing..." | |
Write-Warning $warningMessage | |
$newUserPATH = @( | |
$userPath -split [System.IO.Path]::PathSeparator | | |
Where-Object { $_ -and $_ -ne "$env:ChocolateyInstall\bin" } | |
) -join [System.IO.Path]::PathSeparator | |
# NEVER use [Environment]::SetEnvironmentVariable() for PATH values; see https://github.com/dotnet/corefx/issues/36449 | |
# This issue exists in ALL released versions of .NET and .NET Core as of 12/19/2019 | |
$userKey.SetValue('PATH', $newUserPATH, 'ExpandString') | |
} | |
if ($machinePath -like "*$env:ChocolateyInstall*") { | |
Write-Verbose "Chocolatey Install location found in Machine Path. Removing..." | |
Write-Warning $warningMessage | |
$newMachinePATH = @( | |
$machinePath -split [System.IO.Path]::PathSeparator | | |
Where-Object { $_ -and $_ -ne "$env:ChocolateyInstall\bin" } | |
) -join [System.IO.Path]::PathSeparator | |
# NEVER use [Environment]::SetEnvironmentVariable() for PATH values; see https://github.com/dotnet/corefx/issues/36449 | |
# This issue exists in ALL released versions of .NET and .NET Core as of 12/19/2019 | |
$machineKey.SetValue('PATH', $newMachinePATH, 'ExpandString') | |
} | |
# Adapt for any services running in subfolders of ChocolateyInstall | |
$agentService = Get-Service -Name chocolatey-agent -ErrorAction SilentlyContinue | |
if ($agentService -and $agentService.Status -eq 'Running') { | |
$agentService.Stop() | |
} | |
# TODO: add other services here | |
Remove-Item -Path $env:ChocolateyInstall -Recurse -Force | |
'ChocolateyInstall', 'ChocolateyLastPathUpdate' | ForEach-Object { | |
foreach ($scope in 'User', 'Machine') { | |
[Environment]::SetEnvironmentVariable($_, [string]::Empty, $scope) | |
} | |
} | |
$machineKey.Close() | |
$userKey.Close() | |
if ($env:ChocolateyToolsLocation -and (Test-Path $env:ChocolateyToolsLocation)) { | |
Remove-Item -Path $env:ChocolateyToolsLocation -WhatIf -Recurse -Force | |
} | |
foreach ($scope in 'User', 'Machine') { | |
[Environment]::SetEnvironmentVariable('ChocolateyToolsLocation', [string]::Empty, $scope) | |
} |
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