init

nix/overlay.nix

@@ -0,0 +1,3 @@
+final: prev: {
+  galton = final.callPackage ./package.nix {};
+}

nix/package.nix

@@ -0,0 +1,21 @@
+{
+  rustPlatform,
+  pkg-config,
+  lib,
+}: let
+  inherit (lib.sources) sourceByRegex;
+  inherit (builtins) fromTOML readFile;
+  src = sourceByRegex ../. ["Cargo.*" "(src)(/.*)?"];
+  version = (fromTOML (readFile ../Cargo.toml)).package.version;
+in
+  rustPlatform.buildRustPackage rec {
+    pname = "galton";
+
+    inherit src version;
+
+    cargoLock = {
+      lockFile = ../Cargo.lock;
+    };
+
+    meta.mainProgram = "galton";
+  }