diff --git a/waterbox/nyma/shell.nix b/waterbox/nyma/shell.nix
new file mode 100644
index 0000000000..9d2984e0b6
--- /dev/null
+++ b/waterbox/nyma/shell.nix
@@ -0,0 +1,23 @@
+{ pkgs ? import <nixpkgs> {} }:
+let
+	versionAtLeast = exVer: acVer: builtins.compareVersions exVer acVer <= 0;
+	flatbuffersPatched = pkgs.flatbuffers.overrideAttrs (oldAttrs: {
+		version = "22.9.24";
+		src = pkgs.fetchFromGitHub {
+			owner = "google";
+			repo = "flatbuffers";
+			rev = "76ddae006f6e5068d2f26f235dbd167bd826a698";
+			sha256 = "1vycd1641id476qhmkrgdfiisxx7n2zn54p3r6nva6dm0bd58lc8";
+		};
+		patches = []; # single patch has since been merged upstream
+		postPatch = ''
+			# Fix default value of "test_data_path" to make tests work
+			substituteInPlace tests/test.cpp --replace '"tests/";' '"../tests/";'
+		'';
+	});
+	flatbuffersFinal = if versionAtLeast "22.9.24" pkgs.flatbuffers.version
+		then pkgs.flatbuffers
+		else assert versionAtLeast "2.0.0" pkgs.flatbuffers.version; flatbuffersPatched; # need base of >= Nixpkgs 21.11
+in pkgs.mkShell {
+	packages = [ flatbuffersFinal ];
+}