systemDataDir function
The machine-wide data root for a --system service: /var/lib/omnyserver
on POSIX, %ProgramData%\omnyserver on Windows (which has no /var/lib).
Implementation
String systemDataDir() {
if (!Platform.isWindows) return '/var/lib/omnyserver';
final programData = Platform.environment['ProgramData'];
return p.join(
(programData == null || programData.isEmpty)
? r'C:\ProgramData'
: programData,
'omnyserver',
);
}