I like the read-only rootfs + modifications on separate partition scheme used by most OpenWrt/LEDE router targets very much because it is so much more reliable (flash wear) and deterministically updateable than a single writable filesystem.
So I would prefer to use LEDE on RaspberryPi this way, but unfortunately, the current LEDE build results in a ext4 writable rootfs quite similar to standard raspian.
what were/are the reasons to choose single ext4 for raspberry pi rather than router style layout?
is there a (clean) way to build LEDE for raspberry with r/o squasfs + small writable overlayfs partition?
I'm building OpenWrt 18.06.1 from scratch for RPi, which at least by default uses a FAT boot partition (as required by the RPi bootloader) plus a rw ext4 partition. I did not find any option to change that in menuconfig.
I also had a look at openwrt/master commits with "brcm" in the subject, but did not see any changes that would have indicated a change from ext4 to squashfs+f2fs. What am I missing?