`Get-PSResource` does not search in user context environment variable `PSModulePath`

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues.

Steps to reproduce

PackageManagement, PowerShellGetv2 and PowerShellGet 3.0.18-beta (and prior versions) does not search in directorories specified in user context environmental variable PSModulePath when searching for modules. But at least v3 has a -Path parameter.

Reproduce:

• Install Az.Accounts to %LOCALAPPDATA%\Microsoft\PowerShell\Modules by using Save-PSResource.
• Make sure said module is not installed any other places specified in $env:PSModulePath.
  • Or rather any other default locations for PowerShell modules I guess.
• Make sure %LOCALAPPDATA%\Microsoft\PowerShell\Modules is specified in HKCU:\Environment\PSModulePath, and that PowerShell loaded it into $env:PSModulePath at start. Should also be seen in [System.Environment]::GetEnvironmentVariable('PSModulePath','User').
• Search for installed modules with PowerShellGet\Get-PSResource -Name 'Az.Accounts'. Result: Not found.
• Add -Scope 'CurrentUser: Nope, still not found.
• Add -Path ('{0}\Microsoft\PowerShell\Modules' -f $env:LOCALAPPDATA): Found.

Microsoft.PowerShell.Core\Import-Module and Get-Module works as expected.

Expected behavior

PowerShellGet\Get-PSResource should search in all PSModulePath paths, also those specified in user context environmental variable.

Actual behavior

It does not.

Error details

No response

Environment data

PowerShellGet v3.0.18
Windows PowerShell 5.1 x64 on Windows 10 22H2

Visuals

No response

Start by reproducing the Windows PowerShell 5.1 case with Get-PSResource -Name 'Az.Accounts' and a user-context PSModulePath entry. Trace the Get-PSResource search implementation and compare its path handling with the explicit -Path and -Scope CurrentUser cases. Done means resources in user-context PSModulePath locations are found without supplying -Path, with regression coverage for this scenario.