feat(path): Isolate Scoop apps' PATH

CHANGELOG.md

@@ -8,6 +8,7 @@
 - **bucket:** Make official buckets higher priority ([#5398](https://github.com/ScoopInstaller/Scoop/issues/5398))
 - **core:** Add `-Quiet` switch for `Invoke-ExternalCommand` ([#5346](https://github.com/ScoopInstaller/Scoop/issues/5346))
 - **core:** Allow global install of PowerShell modules ([#5611](https://github.com/ScoopInstaller/Scoop/issues/5611))
+- **path:** Isolate Scoop apps' PATH ([#5840](https://github.com/ScoopInstaller/Scoop/issues/5840))
 
 ### Bug Fixes
 

bin/uninstall.ps1

@@ -100,5 +100,8 @@ if ($purge) {
 }
 
 Remove-Path -Path (shimdir $global) -Global:$global
+if (get_config USE_ISOLATED_PATH) {
+    Remove-Path -Path '%SCOOP_PATH%' -Global:$global
+}
 
 success 'Scoop has been uninstalled.'

lib/install.ps1

@@ -909,6 +909,12 @@ function env_add_path($manifest, $dir, $global, $arch) {
     $env_add_path = arch_specific 'env_add_path' $manifest $arch
     $dir = $dir.TrimEnd('\')
     if ($env_add_path) {
+        if (get_config USE_ISOLATED_PATH) {
+            Add-Path -Path '%SCOOP_PATH%' -Global:$global
+            $target_path = 'SCOOP_PATH'
+        } else {
+            $target_path = 'PATH'
+        }
         # GH-3785: Add path in ascending order.
         [Array]::Reverse($env_add_path)
         $env_add_path | Where-Object { $_ } | ForEach-Object {
@@ -920,7 +926,7 @@ function env_add_path($manifest, $dir, $global, $arch) {
             if (!(is_in_dir $dir $path_dir)) {
                 abort "Error in manifest: env_add_path '$_' is outside the app directory."
             }
-            Add-Path -Path $path_dir -Global:$global -Force
+            Add-Path -Path $path_dir -Scope $target_path -Global:$global -Force
         }
     }
 }
@@ -929,13 +935,21 @@ function env_rm_path($manifest, $dir, $global, $arch) {
     $env_add_path = arch_specific 'env_add_path' $manifest $arch
     $dir = $dir.TrimEnd('\')
     if ($env_add_path) {
+        if (get_config USE_ISOLATED_PATH) {
+            $target_path = 'SCOOP_PATH'
+        } else {
+            $target_path = 'PATH'
+        }
         $env_add_path | Where-Object { $_ } | ForEach-Object {
             if ($_ -eq '.') {
                 $path_dir = $dir
             } else {
                 $path_dir = Join-Path $dir $_
             }
-            Remove-Path -Path $path_dir -Global:$global
+            Remove-Path -Path $path_dir -Scope $target_path -Global:$global
+            if ($target_path -eq 'SCOOP_PATH') {
+                Remove-Path -Path $path_dir -Global:$global
+            }
         }
     }
 }

lib/system.ps1

@@ -88,6 +88,7 @@ function Test-PathLikeEnvVar {
 function Add-Path {
     param(
         [string]$Path,
+        [string]$Scope = 'PATH',
         [switch]$Global,
         [switch]$Force
     )
@@ -96,10 +97,10 @@ function Add-Path {
         $Path = fullpath $Path
     }
     # future sessions
-    $inPath, $strippedPath = Test-PathLikeEnvVar $Path (Get-EnvVar -Name 'PATH' -Global:$Global)
+    $inPath, $strippedPath = Test-PathLikeEnvVar $Path (Get-EnvVar -Name $Scope -Global:$Global)
     if (!$inPath -or $Force) {
         Write-Output "Adding $(friendly_path $Path) to $(if ($Global) {'global'} else {'your'}) path."
-        Set-EnvVar -Name 'PATH' -Value (@($Path, $strippedPath) -join ';') -Global:$Global
+        Set-EnvVar -Name $Scope -Value (@($Path, $strippedPath) -join ';') -Global:$Global
     }
     # current session
     $inPath, $strippedPath = Test-PathLikeEnvVar $Path $env:PATH
@@ -111,17 +112,18 @@ function Add-Path {
 function Remove-Path {
     param(
         [string]$Path,
+        [string]$Scope = 'PATH',
         [switch]$Global
     )
 
     if (!$Path.Contains('%')) {
         $Path = fullpath $Path
     }
     # future sessions
-    $inPath, $strippedPath = Test-PathLikeEnvVar $Path (Get-EnvVar -Name 'PATH' -Global:$Global)
+    $inPath, $strippedPath = Test-PathLikeEnvVar $Path (Get-EnvVar -Name $Scope -Global:$Global)
     if ($inPath) {
         Write-Output "Removing $(friendly_path $Path) from $(if ($Global) {'global'} else {'your'}) path."
-        Set-EnvVar -Name 'PATH' -Value $strippedPath -Global:$Global
+        Set-EnvVar -Name $Scope -Value $strippedPath -Global:$Global
     }
     # current session
     $inPath, $strippedPath = Test-PathLikeEnvVar $Path $env:PATH

libexec/scoop-config.ps1

@@ -115,6 +115,10 @@
 #       Nightly version is formatted as 'nightly-yyyyMMdd' and will be updated after one day if this is set to $true.
 #       Otherwise, nightly version will not be updated unless `--force` is used.
 #
+# use_isolated_path: $true|$false
+#       When set to $true, Scoop will use `SCOOP_PATH` environment variable to store apps' `PATH`s.
+#       This is useful when you want to isolate Scoop from the system `PATH`.
+#
 # ARIA2 configuration
 # -------------------
 #

libexec/scoop-reset.ps1

@@ -80,6 +80,9 @@ $apps | ForEach-Object {
     $dir = link_current $dir
     create_shims $manifest $dir $global $architecture
     create_startmenu_shortcuts $manifest $dir $global $architecture
+    # unset all potential old env before re-adding
+    env_rm_path $manifest $dir $global $architecture
+    env_rm $manifest $global $architecture
     env_add_path $manifest $dir $global $architecture
     env_set $manifest $dir $global $architecture
     # unlink all potential old link before re-persisting