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For a while now it's possible to specify an additional config file in `wpa_supplicant`[1]. In contrast to the file specified via `-c` this was supposed to be used for immutable settings and not e.g. additional networks. However I'm a little bit unhappy about the fact that one has to choose between a fully imperative setup and a fully declarative one where the one would have to write credentials for e.g. WPA2-enterprise networks into the store. The primary problem with the current state of `wpa_supplicant` is that if the `SAVE_CONFIG` command is invoked (e.g. via `wpa_cli`), all known networks will be written to `/etc/wpa_supplicant.conf` and thus all declarative networks would get out of sync with the declarative settings. To work around this, I had to change the following things: * The `networking.wireless`-module now uses `-I` for declarative config, so the user-controlled mode can be used along with the `networks`-option. * I added an `ro`-field to the `ssid`-struct in the `wpa_supplicant`-sources. This will be set to `1` for each network specified in the config passed via `-I`. Whenever config is written to the disk, those networks will be skipped, so changes to declarative networks are only temporary. [1] https://w1.fi/cgit/hostap/commit/wpa_supplicant?id=e6304cad47251e88d073553042f1ea7805a858d1 |
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