I think this is almost working!

1 files changed, 37 insertions, 15 deletions

diff --git a/modules/kobo/default.nix b/modules/kobo/default.nix
index cdf9728..48bca11 100644
--- a/modules/kobo/default.nix
+++ b/modules/kobo/default.nix
@@ -21,22 +21,45 @@ in {
       default = "/mnt/onboard/${cfg.path}";
     };
 
-    file = mkOption {
-      default = {};
-      type = types.attrsOf (types.submodule (pkgs.callPackage ../lib/file-type.nix {}));
-      apply = filterAttrs (_: v: v.enable);
+    _createdFiles = mkOption {
+      type = types.package;
+      internal = true;
+      readOnly = true;
+      default = pkgs.buildEnv {
+        name = "kobo-files-created";
+        paths = mapAttrsToList (_: v: v._package) cfg.file;
+        extraPrefix = cfg.devicePath;
+      };
     };
 
-    _allFiles = mkOption {
+    finalPackage = mkOption {
       type = types.package;
-      readOnly = true;
       internal = true;
-      default = pkgs.symlinkJoin {
-        name = "kobo-files";
-        paths = mapAttrsToList (v: v._package) cfg.file;
+      readOnly = true;
+      default = pkgs.mergePaths {
+        name = "kobo-package";
+        paths = [
+          cfg._createdFiles
+        ];
       };
     };
 
+    file = mkOption {
+      default = {};
+      type = types.attrsOf (types.submodule (pkgs.callPackage ../lib/file-type.nix {}));
+      apply = filterAttrs (_: v: v.enable);
+    };
+
+    # _allFiles = mkOption {
+    #   type = types.package;
+    #   readOnly = true;
+    #   internal = true;
+    #   default = pkgs.symlinkJoin {
+    #     name = "kobo-files";
+    #     paths = mapAttrsToList (v: v._package) cfg.file;
+    #   };
+    # };
+
     conf = mkOption {
       type = ini.type;
       default = {};
@@ -55,16 +78,15 @@ in {
           };
         };
 
-        file = mkIf (cfg.conf != {}) {
-          "Kobo eReader.conf".text = generators.toINI {} cfg.conf;
+        file = {
+          "Kobo eReader.conf" = mkIf (cfg.conf != {}) {
+            text = generators.toINI {} cfg.conf;
+          };
         };
       };
     }
     (mkIf cfg.enable {
-      koboroot.include = singleton (pkgs.linkFarm [{
-        name = cfg.devicePath;
-        path = cfg._allFiles;
-      }]);
+      koboroot.include = singleton cfg.finalPackage;
     })
   ];
 }