add package helper

hosts/othalan/pkgs.nix

@@ -1,22 +0,0 @@
-{ pkgs, flake, ... }:
-{
-  environment.systemPackages =
-    [
-      (flake.pkg "utils")
-      (flake.pkg "ghostty")
-    ]
-    ++ (with pkgs; [
-      sops
-      attic-client
-
-      distrobox
-      # cachix
-      zk
-
-      graphviz
-      charm-freeze
-
-      quarto
-      calibre
-    ]);
-}

hosts/othalan/settings/pkgs

@@ -0,0 +1,10 @@
+flake:utils
+flake:ghostty
+sops
+attic-client
+distrobox
+zk
+graphviz
+charm-freeze
+quarto
+calibre

lib/extended.nix

@@ -21,6 +21,7 @@ let
     types
     hasPrefix
     splitString
+    removePrefix
     trim
     ;
   inherit (final.filesystem) listFilesRecursive;
@@ -147,6 +148,35 @@ let
       // (tryreadEnabledAttrsOrEmpty "${p}/settings/modules")
     );
 
+  # convert the following:
+  # ```txt
+  # flake:utils
+  # sops
+  # graphviz
+  # ```
+  # to
+  # ```nix
+  # [
+  #   (flake.pkg "utils")
+  #   pkgs.sops
+  #   pkgs.graphviz
+  # ]
+  # ```
+  tryPkgsFromFile =
+    {
+      hostName,
+      pkgs,
+      flake ? flakeFromSystem "x86_64-linux",
+    }:
+        hostName
+        |> pathFromHostName
+        |> (p: "${p}/settings/pkgs")
+        |> tryReadLinesNoComment
+        |> map (
+          line:
+          if hasPrefix "flake:" line then (line |> removePrefix "flake:" |> flake.pkgs) else pkgs.${line}
+        );
+
 in
 {
   inherit
@@ -169,5 +199,6 @@ in
     loadOverlays
     hostFiles
     oizysSettings
+    tryPkgsFromFile
     ;
 }

modules/oizys.nix

@@ -3,10 +3,11 @@
   lib,
   self,
   hostName,
+  pkgs,
   ...
 }:
 let
-  inherit (lib) mkEnableOption mkOption loadOverlays oizysSettings;
+  inherit (lib) mkEnableOption mkOption loadOverlays oizysSettings tryPkgsFromFile;
 in
 {
   imports = with self.nixosModules; [
@@ -61,5 +62,6 @@ in
     time.timeZone = "US/Central";
     nixpkgs.overlays = import ../overlays { inherit inputs loadOverlays; };
     oizys = oizysSettings hostName;
+    environment.systemPackages = tryPkgsFromFile {inherit hostName pkgs;};
   };
 }