If anyone fancies a look at it
OpenWin is an answer file (autounattend.xml) plus an $OEM$ folder that you add to the official Windows 11 installer from Microsoft. Windows Setup does the rest. It installs Windows 11 Pro with open-source apps by default, without Edge and most of the preinstalled apps, and with a local account.
GitHub - cris2k47/OpenWin: What if Windows were open source? An unattended Windows 11 install with Brave and 7-Zip by default, no Edge, no bloat and a local account. Add autounattend.xml and $OEM$ to the official installer.