I've successfully been using Electron on OSX (10.11.6) for months to build and package OSX and WIN apps. I am currently using electron v1.7.3 and "electron-packager" "^8.5.2" and haven't updated anything for a while.
Today when I went to package a WIN app I got an alert about a need to install Wine, with an option to install. (I should have taken a screenshot to log the full message.) I opted to install Wine and the build proceeded normally. The app tests ok running Windows 10 under emulation with VMWare Fusion.
There were no terminal messages aside from the usual:
Packaging app for platform win32 ia32 using electron v1.7.3
Does anyone know why this alert might have been triggered? Nothing on my system has changed (that I know of) since the last time I packaged apps – so I would like to understand what might have occurred. I didn't update my package.json or npm or include any additional npm packages.
electron-packager is using Wine for building Win dist on non-Win platforms. Wine released a new version five days ago So what happened was that electron-packager triggered Wine to start, which checked for updates and prompted you to install it. You should feel safe :)