Since `none-ls` has removed their `shellcheck` built-in. This actually
makes the diagnostics more robust to POSIX/non-POSIX scripts (the LSP
server detects it at runtime, which is more robust than the `ftdetect`
scripts).
Nice bonus: the shellcheck code is shown in the diagnostics message
without any configuration!
I'm not sure if I can configure `avoid-nullary-conditions` -- though it
seems like this check is broken at the moment (I couldn't get it to
trigger during my tests).
`none-ls` deprecated a lot of unmaintained builtins, or ones that they
find has been replaced by a compete LSP server.
This removes those deprecated builtins, or uses a shim until I migrate
to the relevant LSP configuration (for `bash-language-server`).
OVH/Kimsufi are deprecating my current server by the end of the year. So
let's migrate to a new host.
This was more painful than initially planned, OVH introduced a change to
their rescue system which messes with the NixOS installation [1].
In the end I used a kexec image [2] to run the installation.
[1]: https://github.com/NixOS/nix/issues/7790
[2]: https://github.com/nix-community/nixos-images