<!-- Which version of electron-builder are you using? --> * **Version**: 15.2.0 <!-- What target are you building for? --> * **Target**: Windows / NSIS <!-- Enter your issue details below this comment. --> Commit f2056fa messed up the logic for building an ia32 only build. running `build --ia32` now results in building ia32 and x64 in one NSIS installer, instead of just ia32 as it used to be pre 15.2.0. <!-- If you want, you can donate to increase issue priority (https://github.com/electron-userland/electron-builder/wiki/Donations) -->