pub fn parse_manifest(text: &str) -> Option<InstallManifest>Expand description
The manifest’s text as an InstallManifest, or None when it is not
one: an unreadable manifest is reported as no manifest, and the method is
read from the path instead. A leading BOM is allowed – Windows
PowerShell 5.1 writes one with -Encoding UTF8, and older install.ps1
runs did.