Trying to structure this to be a flake input.

2025-07-20 11:27:26 -05:00 · 2025-07-20 11:27:26 -05:00 · 2e6fbe5856
commit 2e6fbe5856
parent 9b4bd81df3
3 changed files with 89 additions and 0 deletions
--- a/lib/metanix.nix
+++ b/lib/metanix.nix
@ -0,0 +1,45 @@
+# lib/metanix.nix
+{ data, lib }:
+
+let
+  buildSystemIndex =
+    let
+      flattenSystems = locationName: subnetName: systems:
+        lib.mapAttrsToList
+          (systemName: systemCfg: {
+            inherit systemName locationName subnetName;
+            primary = systemCfg.primary or false;
+            macs = systemCfg.macAddresses or [ ];
+          })
+          systems;
+
+      allSystems =
+        builtins.concatLists (
+          lib.mapAttrsToList
+            (locationName: location:
+              builtins.concatLists (
+                lib.mapAttrsToList
+                  (subnetName: subnet:
+                    flattenSystems locationName subnetName (subnet.systems or { })
+                  )
+                  (location.subnets or { })
+              )
+            )
+            data.locations
+        );
+    in
+    builtins.foldl'
+      (acc: entry:
+        let
+          existing = acc.${entry.systemName} or [ ];
+        in
+        acc // {
+          ${entry.systemName} = existing ++ [ builtins.removeAttrs entry [ "systemName" ] ];
+        }
+      )
+      { }
+      allSystems;
+in
+{
+  inherit buildSystemIndex;
+}