Fix properties.nix path loading

common/machine-info/default.nix

@@ -13,13 +13,6 @@ in
   ];
 
   options.machines = {
-    # For some reason (presumably a bug), using the best value of "../../machines"
-    # as the path causes nix to search for invalid paths for flake imports but *not*
-    # secrets.nix for agenix.
-    machinesPath = lib.mkOption {
-      type = lib.types.path;
-      default = ../..;
-    };
 
     hosts = lib.mkOption {
       type = lib.types.attrsOf
@@ -194,15 +187,14 @@ in
           })
           (propertiesFiles dir);
         propertiesFiles = dir:
-          lib.foldl (lib.mergeAttrs) { } (propertiesFiles' dir "");
-        propertiesFiles' = dir: dirName:
+          lib.foldl (lib.mergeAttrs) { } (propertiesFiles' dir);
+        propertiesFiles' = dir:
           let
-            dirContents = builtins.readDir dir;
-            dirPaths = lib.filter (path: dirContents.${path} == "directory") (lib.attrNames dirContents);
-            propFiles = builtins.map (p: "${dir}/${p}") (lib.filter (path: path == "properties.nix") (lib.attrNames dirContents));
+            propFiles = lib.filter (p: baseNameOf p == "properties.nix") (lib.filesystem.listFilesRecursive dir);
+            dirName = path: builtins.baseNameOf (builtins.dirOf path);
           in
-          lib.concatMap (d: propertiesFiles' "${dir}/${d}" d) dirPaths ++ builtins.map (p: { "${dirName}" = p; }) propFiles;
+          builtins.map (p: { "${dirName p}" = p; }) propFiles;
       in
-      properties config.machines.machinesPath;
+      properties ../../machines;
   };
 }

common/machine-info/moduleless.nix

@@ -2,7 +2,6 @@
 
 { nixpkgs ? import <nixpkgs> { }
 , assertionsModule ? <nixpkgs/nixos/modules/misc/assertions.nix>
-, machinesPath ? null
 }:
 
 {
@@ -11,11 +10,6 @@
       modules = [
         ./default.nix
         assertionsModule
-        {
-          config = nixpkgs.lib.mkIf (machinesPath != null) {
-            machines.machinesPath = machinesPath;
-          };
-        }
       ];
     }).config.machines;
 }

secrets/secrets.nix

@@ -1,8 +1,6 @@
 let
   lib = (import <nixpkgs> { }).lib;
-  sshKeys = (import ../common/machine-info/moduleless.nix {
-    machinesPath = ../machines;
-  }).machines.ssh;
+  sshKeys = (import ../common/machine-info/moduleless.nix { }).machines.ssh;
 
   # add userkeys to all roles so that I can r/w the secrets from my personal computers
   roles = lib.mapAttrs (role: hosts: hosts ++ sshKeys.userKeys) sshKeys.hostKeysByRole;