Add flake-dirs input

action.yml

@@ -23,6 +23,11 @@ inputs:
   path-to-flake-dir:
     description: "The path of the directory containing `flake.nix` file within your repository. Useful when `flake.nix` cannot reside at the root of your repository."
     required: false
+  flake-dirs:
+    description: |
+      A space-separated list of directories containing `flake.nix` files within your repository. Useful when you have multiple flakes in your repository.
+    required: false
+    default: ""
   pr-title:
     description: "The title of the PR to be created"
     required: false
@@ -164,6 +169,7 @@ runs:
         INPUT_INPUTS: ${{ inputs.inputs }}
         INPUT_NIX-OPTIONS: ${{ inputs.nix-options }}
         INPUT_PATH-TO-FLAKE-DIR: ${{ inputs.path-to-flake-dir }}
+        INPUT_FLAKE-DIRS: ${{ inputs.flake-dirs }}
         INPUT_PR-ASSIGNEES: ${{ inputs.pr-assignees }}
         INPUT_PR-BODY: ${{ inputs.pr-body }}
         INPUT_PR-LABELS: ${{ inputs.pr-labels }}