pwsh (Install) 6.1.2

PowerShell Core is the open source multiplatform version of PowerShell

Preview releases are under the package id powershell-preview so that they can be safely installed and maintained side-by-side with the release versions on production systems.
Preview versions do not become the default powershell core edition on a system (unless they are the ONLY edition), if you have a preview version installed, access it via pwsh's '-pre' switch.

This package automatically does verbose MSI logging to %temp%\(packagenameandversion).MsiInstall.log

There are some helpful arguments you can pass to the MSI installer, but you should use the powershell-core package 
directly to do so.