nixos/home-assistant: escape yaml functions in lovelace config

and improve the documentation around this topic by a large margin.

Closes: #352651
This commit is contained in:
Martin Weinelt 2024-11-01 00:46:59 +01:00
parent b4f480fea3
commit 0924dfae80
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@ -6,17 +6,21 @@ let
cfg = config.services.home-assistant;
format = pkgs.formats.yaml {};
# Render config attribute sets to YAML
# Values that are null will be filtered from the output, so this is one way to have optional
# options shown in settings.
# We post-process the result to add support for YAML functions, like secrets or includes, see e.g.
# Post-process YAML output to add support for YAML functions, like
# secrets or includes, by naively unquoting strings with leading bangs
# and at least one space-separated parameter.
# https://www.home-assistant.io/docs/configuration/secrets/
filteredConfig = lib.converge (lib.filterAttrsRecursive (_: v: ! elem v [ null ])) (lib.recursiveUpdate customLovelaceModulesResources (cfg.config or {}));
configFile = pkgs.runCommandLocal "configuration.yaml" { } ''
cp ${format.generate "configuration.yaml" filteredConfig} $out
renderYAMLFile = fn: yaml: pkgs.runCommandLocal fn { } ''
cp ${format.generate fn yaml} $out
sed -i -e "s/'\!\([a-z_]\+\) \(.*\)'/\!\1 \2/;s/^\!\!/\!/;" $out
'';
lovelaceConfigFile = format.generate "ui-lovelace.yaml" cfg.lovelaceConfig;
# Filter null values from the configuration, so that we can still advertise
# optional options in the config attribute.
filteredConfig = lib.converge (lib.filterAttrsRecursive (_: v: ! elem v [ null ])) (lib.recursiveUpdate customLovelaceModulesResources (cfg.config or {}));
configFile = renderYAMLFile "configuration.yaml" filteredConfig;
lovelaceConfigFile = renderYAMLFile "ui-lovelace.yaml" cfg.lovelaceConfig;
# Components advertised by the home-assistant package
availableComponents = cfg.package.availableComponents;