nixos/home-assistant: use runCommandLocal for configuration.yaml

  # We post-process the result to add support for YAML functions, like secrets or includes, see e.g.

  # https://www.home-assistant.io/docs/configuration/secrets/

  filteredConfig = lib.converge (lib.filterAttrsRecursive (_: v: ! elem v [ null ])) cfg.config or {};

  configFile = pkgs.runCommand "configuration.yaml" { preferLocalBuild = true; } ''

  configFile = pkgs.runCommandLocal "configuration.yaml" { } ''

    cp ${format.generate "configuration.yaml" filteredConfig} $out

    sed -i -e "s/'\!\([a-z_]\+\) \(.*\)'/\!\1 \2/;s/^\!\!/\!/;" $out

  '';