Allow "Developer Powershell for VS 2019" environment to be bootstrapped within powershell core / pwsh

start-vsdevshell.ps1

[cmdletbinding()]
param([switch]$Preview)

# vswhere will reliably locate visual studio installations
if (!(gcm vswhere)) {
	# https://chocolatey.org/
	if (gcm choco) {
		choco install vswhere -y
	}
	else {
		# https://github.com/microsoft/vswhere/wiki/Installing
		write-warning "VSWhere.exe not found. Please install it in your path."
		exit
	}
} else {
	write-verbose "vswhere found!"
}

$prerelease = $(if ($preview.ispresent) { "-prerelease" })
$vsconfig = $(convertfrom-json ((iex "vswhere -latest $prerelease -format json") -join ""))
$instanceId = $vsconfig.instanceid

$bootstrapper = join-path $vsconfig.installationPath "Common7\Tools\Microsoft.VisualStudio.DevShell.dll"
write-verbose "Bootstrapper path: $bootstrapper"

if (test-path $bootstrapper) {
	import-module $bootstrapper
  # this cmdlet throws an exception about telemetry (boo-hoo) but succeeds in its main task 
	try { enter-vsdevshell $instanceId } catch {}
} else {
	write-warning "VS DevShell library not found for $($vsconfig.installationname). Try using -Preview switch."
}