This PowerShell script is designed to set up various development tool caches on a specified Dev Drive (e.g., D:\packages). It ensures that each tool's cache directory is properly created, sets global environment variables to point to these new directories, and moves any existing cache contents to the new locations. Additionally, the script check…

SetupDevDrivePackageCache.ps1

# Define the Dev Drive base path
$DevDrive = "D:\packages"

# Function to create a directory if it doesn't exist
function Ensure-Directory {
    param (
        [string]$Path
    )
    if (-not (Test-Path -Path $Path)) {
        New-Item -Path $Path -ItemType Directory -Force
        Write-Output "Created directory: $Path"
    } else {
        Write-Output "Directory already exists: $Path"
    }
}

# Function to set a global environment variable with verbose output
function Set-GlobalEnvironmentVariable {
    param (
        [string]$Name,
        [string]$Value
    )
    $currentValue = [System.Environment]::GetEnvironmentVariable($Name, [System.EnvironmentVariableTarget]::Machine)
    if ($currentValue -eq $Value) {
        Write-Output "Environment variable '$Name' is already set to '$Value'. No further setup is required."
    } else {
        try {
            $output = setx /M $Name $Value
            if ($output -match "SUCCESS: Specified value was saved.") {
                Write-Output "SUCCESS: Environment variable '$Name' was set to '$Value'."
            } else {
                Write-Output "ERROR: Could not set environment variable '$Name'. Message: $output"
            }
        } catch {
            Write-Output "ERROR: Access to the registry path is denied for environment variable '$Name'."
        }
    }
}

# Function to move contents from one directory to another
function Move-CacheContents {
    param (
        [string]$SourcePath,
        [string]$DestinationPath
    )
    if (Test-Path -Path $SourcePath) {
        Move-Item -Path "$SourcePath\*" -Destination $DestinationPath -Force
        Remove-Item -Path $SourcePath -Recurse -Force
        Write-Output "Moved contents from '$SourcePath' to '$DestinationPath' and removed the old directory."
    } else {
        Write-Output "No contents to move from '$SourcePath'."
    }
}

# Create necessary directories
$directories = @(
    "$DevDrive\npm",
    "$DevDrive\$env:USERNAME\.nuget\packages",
    "$DevDrive\vcpkg",
    "$DevDrive\pip",
    "$DevDrive\cargo",
    "$DevDrive\maven",
    "$DevDrive\gradle"
)

Write-Output "### Directory Setup ###"
foreach ($dir in $directories) {
    Ensure-Directory -Path $dir
}
Write-Output ""

# Environment variable setup and cache moving
$cacheSettings = @(
    @{ Name = "npm_config_cache"; Value = "$DevDrive\npm"; SourcePaths = @("$env:APPDATA\npm-cache", "$env:LOCALAPPDATA\npm-cache") },
    @{ Name = "NUGET_PACKAGES"; Value = "$DevDrive\$env:USERNAME\.nuget\packages"; SourcePaths = @("$env:USERPROFILE\.nuget\packages") },
    @{ Name = "VCPKG_DEFAULT_BINARY_CACHE"; Value = "$DevDrive\vcpkg"; SourcePaths = @("$env:LOCALAPPDATA\vcpkg\archives", "$env:APPDATA\vcpkg\archives") },
    @{ Name = "PIP_CACHE_DIR"; Value = "$DevDrive\pip"; SourcePaths = @("$env:LOCALAPPDATA\pip\Cache") },
    @{ Name = "CARGO_HOME"; Value = "$DevDrive\cargo"; SourcePaths = @("$env:USERPROFILE\.cargo") },
    @{ Name = "MAVEN_OPTS"; Value = "-Dmaven.repo.local=$DevDrive\maven %MAVEN_OPTS%"; SourcePaths = @("$env:USERPROFILE\.m2") },
    @{ Name = "GRADLE_USER_HOME"; Value = "$DevDrive\gradle"; SourcePaths = @("$env:USERPROFILE\.gradle") }
)

foreach ($setting in $cacheSettings) {
    Write-Output "### Setting up $($setting.Name) ###"
    Set-GlobalEnvironmentVariable -Name $setting.Name -Value $setting.Value
    foreach ($source in $setting.SourcePaths) {
        Move-CacheContents -SourcePath $source -DestinationPath $setting.Value
    }
    Write-Output ""
}

Write-Output "### Setup Complete ###"
Write-Output "Package cache on Dev Drive was set successfully."