modules/shared/telegraf: add /etc/flake-inputs.prom

allows the flake inputs to be changed without restarting telegraf

modules/darwin/common/default.nix

@@ -2,7 +2,6 @@
 {
   imports = [
     ./apfs-cleanup.nix
-    ./flake-inputs.nix
     ./reboot.nix
     ./telegraf.nix
     ./upgrade-diff.nix

modules/darwin/common/flake-inputs.nix

@@ -1,27 +0,0 @@
-{ inputs, lib, pkgs, ... }:
-
-{
-  services.telegraf.extraConfig.inputs.file =
-    let
-      inputsWithDate = lib.filterAttrs (_: input: input ? lastModified) inputs.self.inputs;
-      flakeAttrs = input: (lib.mapAttrsToList (n: v: ''${n}="${v}"'')
-        (lib.filterAttrs (_: v: (builtins.typeOf v) == "string") input));
-      lastModified = name: input: ''
-        flake_input_last_modified{input="${name}",${lib.concatStringsSep "," (flakeAttrs input)}} ${toString input.lastModified}'';
-
-      # avoid adding store path references on flakes which me not need at runtime.
-      promText = builtins.unsafeDiscardStringContext ''
-        # HELP flake_registry_last_modified Last modification date of flake input in unixtime
-        # TYPE flake_input_last_modified gauge
-        ${lib.concatStringsSep "\n" (lib.mapAttrsToList lastModified inputsWithDate)}
-      '';
-    in
-    [
-      {
-        data_format = "prometheus";
-        files = [
-          (pkgs.writeText "flake-inputs.prom" promText)
-        ];
-      }
-    ];
-}

modules/nixos/common/default.nix

@@ -24,8 +24,6 @@
     Restart = "on-failure";
   };
 
-  srvos.flake = inputs.self;
-
   boot.kernelPackages = pkgs.lib.mkIf (!config.boot.supportedFilesystems.zfs or false) pkgs.linuxPackages_latest;
 
   zramSwap.enable = true;

modules/shared/telegraf.nix

@@ -1,5 +1,30 @@
+{ inputs, lib, ... }:
 {
+  environment.etc =
+    let
+      inputsWithDate = lib.filterAttrs (_: input: input ? lastModified) inputs.self.inputs;
+      flakeAttrs = input: (lib.mapAttrsToList (n: v: ''${n}="${v}"'')
+        (lib.filterAttrs (_: v: (builtins.typeOf v) == "string") input));
+      lastModified = name: input: ''
+        flake_input_last_modified{input="${name}",${lib.concatStringsSep "," (flakeAttrs input)}} ${toString input.lastModified}'';
+    in
+    {
+      "flake-inputs.prom" = {
+        text = builtins.unsafeDiscardStringContext ''
+          # HELP flake_registry_last_modified Last modification date of flake input in unixtime
+          # TYPE flake_input_last_modified gauge
+          ${lib.concatStringsSep "\n" (lib.mapAttrsToList lastModified inputsWithDate)}
+        '';
+      };
+    };
+
   services.telegraf.extraConfig.inputs = {
+    file = [
+      {
+        data_format = "prometheus";
+        files = [ "/etc/flake-inputs.prom" ];
+      }
+    ];
     prometheus = {
       metric_version = 2;
     };