A module I am working on to allow for installing modules to a project folder to be packaged for distribution.

PSEnv.ps1

function PSEnv {
    [CmdletBinding()]
    param (
        [Parameter(ValueFromPipelineByPropertyName)]
        [ValidateSet('Install', 'Init', 'Remove')]
        [String]$Operation,

        [parameter(ValueFromPipelineByPropertyName)]
        [string]$module_name
    )

    $modules_path = (Join-Path $pwd -ChildPath 'Modules')

    $init_content = @'
    $modules_path = (Join-Path $psscriptroot -ChildPath 'Modules')

    Get-ChildItem -Path ".\Modules\" | ForEach-Object {
        Import-Module $_.FullName
    }        
'@

    switch ($Operation) {
        'Install' {
            if (Test-Path .\Init.ps1) {
                if (Find-Module $module_name) {
                    Write-host ('Installing {0} to Virtual Env...' -f $module_name)  -ForegroundColor Cyan
                    try {
                        Save-Module $module_name -Path $modules_path
                    }
                    catch {
                        Write-host "[ERROR] " -ForegroundColor Red -NoNewline
                        Write-host $error[0].Exception.Message
                    }
                }
                break
            }
            else {
                write-host "[WARN] " -ForegroundColor Yellow -NoNewline
                Write-host "Init.ps1 not foud in this directory. Run PSenv init to initialize.`n" -ForegroundColor Cyan
            }
            break
        }
        'Init' {
            if (!(Test-Path $modules_path) -or (Test-Path .\Init.ps1)) {
                mkdir $modules_path
                Set-Content -Path 'Init.ps1' -Value $init_content
                Write-host "`n[DONE] " -ForegroundColor green -NoNewline
                Write-host "Modules folder and init.ps1 created! start installing dependancies."
            }
            break
        }
        'Remove' { 
            Remove-Item -Path (Join-Path $modules_path -ChildPath $module_name) -Recurse -Force
        }
    }
}