I wanted to ask to make it possible to install chm-help via OPM. Or include this feature as an additional option in the standard installer for Windows.
It *is* included. I think it is the last page of the installer, the one with the many checkboxes... One of them says: "Install CHM help"
If you have a PC (Windowl) on which you never ever installed Lazarus, then IIRC it is pre-selected.
If you change it, the installer then should remember this for your next install. (again IIRC).
The installer stores this in the registry. Lazarus itself does not store stuff in the registry, but the installer does.
Not sure what (if anything) is stored for a 2ndary install.
You can find the inno build file in tools/install/win
If you chose to install the help, it will be in docs/chm
The chm viewer lhelp.exe should be in components\chmhelp\lhelp