Cleaning up a diffconfig by removing manually added kmods

For Developers
1

If the goal is to clean-up manually added kmods from a potentially bloated diffconfig, I am thinking that the following would do it, but when I diff the two against each other, I am seeing tons of kmods not getting added back.

% sed -i '/CONFIG_PACKAGE_kmod/d' <~/diffconfigs/current_build.diffconfig >.config
% make defconfig
% ./scripts/diffconfig.sh > ok
% vimdiff ~/diffconfigs/current_build.diffconfig ok

For example, I have the wireguard package set and one of its dependencies is PACKAGE_kmod-crypto-lib-chacha20poly1305 but that was not automatically added back.

% grep wireguard ok
CONFIG_PACKAGE_kmod-wireguard=y
CONFIG_PACKAGE_luci-proto-wireguard=y
CONFIG_PACKAGE_wireguard-tools=y

Yet:

% grep kmod-crypto-chacha20poly1305 ok
2

It is just easier to delete the config and add what you want again.
Also you are effectively hand editing a hobbled config and there are warnings about messing with configs manually.

You are also effectively comparing a config and a hobbled config what would happen if you compare two configs there might be some target dependent things removed so the difconfig can be used between different target platforms.