vikunja implementation on b4l

flake.nix

@@ -15,6 +15,7 @@
       inputs.nixpkgs-lib.follows = "nixpkgs";
       url = "github:hercules-ci/flake-parts";
     };
+    import-tree.url = "github:vic/import-tree";
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
     treefmt-nix = {
       url = "github:numtide/treefmt-nix";