Made platform-aware user base feature a switch

Author: DavidWhittingham

EnablePython/EnablePython.psm1

@@ -86,9 +86,9 @@ The operating system install scope (either "CurrentUser" or "AllUsers") to filte
 .PARAMETER PythonHome
 Sets a custom path on the PYTHONHOME environment variable.
 
-.PARAMETER PlatformSpecificUserBase
-Instructs EnablePython on to set or not set a custom PYTHONUSERBASE path in a platform-specific manner.  By default,
-Python uses the same location for both 32-bit and 64-bit installations, which causes problems for binary components.
+.PARAMETER NoPlatformUserBase
+Instructs EnablePython not to set a custom PYTHONUSERBASE path in a platform-specific manner.  By default, Python uses
+the same location for both 32-bit and 64-bit installations, which causes problems for binary components.
 
 .EXAMPLE
 Enable-Python
@@ -154,8 +154,7 @@ https://github.com/DavidWhittingham/ps-EnablePython
         [string]$PythonHome,
 
         [Parameter()]
-        [ValidateSet($true, $false)]
-        [string]$PlatformSpecificUserBase = $true
+        [switch]$NoPlatformUserBase
     )
 
     process {
@@ -201,7 +200,7 @@ https://github.com/DavidWhittingham/ps-EnablePython
         $Env:PYTHONHOME = $PythonHome
 
         # If configured to separate user base by platform, set a custom user base
-        if ($PlatformSpecificUserBase -eq $true) {
+        if ($NoPlatformUserBase -eq $false) {
             $script:OLD_ENV_PYTHONUSERBASE = $Env:PYTHONUSERBASE
             $Env:PYTHONUSERBASE = Join-Path -Path (Join-Path -Path $Env:APPDATA -ChildPath "EnablePython") `
                 -ChildPath ("x86-{0}" -f $foundVersion.Platform)

README.md

@@ -118,7 +118,7 @@ To enable a Python installation on your current shell instance, use the `Enable-
 There are additional options that can control how an environment gets activated:
 
 - `PythonHome`: set a custom Python Home path on activating the environment, which will be automatically removed on deactivation
-- `PlatformSpecificUserBase`: Set to `$true` by default, this parameter *fixes* an issue with running multiple Pythons at the same version with different platforms (e.g. Python 2.7 x86-32 *and* x86-64).  Python by default uses the same directory on both platforms for user installed site-package, which is a problem for any packages that are platform specific.  By default, EnablePython sets an environment variable to have custom per-platform paths in the form `<RoamingAppData>\EnablePython\<PythonPlatform>`.  Setting this to `$false` disables this functionality.
+- `NoPlatformUserBase`: EnablePython *fixes* an issue with running multiple Pythons at the same version with different platforms (e.g. Python 2.7 x86-32 *and* x86-64).  Python by default uses the same directory on both platforms for user installed site-package, which is a problem for any packages that are platform specific.  By default, EnablePython sets an environment variable to have custom per-platform paths in the form `<RoamingAppData>\EnablePython\<PythonPlatform>`.  Setting this switch disables this functionality.
 
 #### Examples
 Get all Python installs available, sort them, and enable the top-most install: