From the top of the repository:
go build
If the generated packages in the p subdirectory can be regenerated using:
go generate
cd cmd/launchserv
go build
winserv.exe contains a large number of unused standard package imports, primarily for their initialization code, and outputs to a logfile to indicate when different steps in the initialization and execution are reached. It can function as a standalone Windows service, or as a 'normal' executable launched by launchserv.exe. This latter method is preferred, as launchserv.exe will log just before starting winserv.exe, giving an indication of the time delta between the process starting and the first winserv.exe log.
To use launchserv.exe and winserv.exe in this manner, place both executables together in a writable directory (such as \Users\<user>\ or subdirectory) and use this command in an Administrator Command Prompt in that directory:
launchserv.exe install
After this is done, Windows will start launchserv.exe as a Windows Service during system start-up, and it will in turn start winserv.exe. Both will write to the same log file (output.txt) in the directory where the executables are located.
To remove the Windows Service, in an Administrator Command Prompt:
launchserv.exe stop
launchserv.exe remove