nixos/prometheus: make scrapeConfigs.*.static_configs.*.labels optional

...by providing a default value of "no labels" (an empty attrset). Without this change we get $ nixos-rebuild test -I nixpkgs=. building Nix... building the system configuration... error: The option `services.prometheus.scrapeConfigs.[definition 1-entry 1].static_configs.[definition 1-entry 1].labels' is used but not defined. which is unneeded, because labels _are_ optional.
NixOS · Dec 25, 2016 · b20fdff · b20fdff
1 parent 7cd5ef7
commit b20fdff
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/nixos/modules/services/monitoring/prometheus/default.nix b/nixos/modules/services/monitoring/prometheus/default.nix
@@ -191,6 +191,7 @@ let
       };
       labels = mkOption {
         type = types.attrsOf types.str;
+        default = {};
         description = ''
           Labels assigned to all metrics scraped from the targets.
         '';