diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..4cbc85b
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1760038930,
+        "narHash": "sha256-Oncbh0UmHjSlxO7ErQDM3KM0A5/Znfofj2BSzlHLeVw=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "0b4defa2584313f3b781240b29d61f6f9f7e0df3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..d093cd5
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,36 @@
+{
+  description = "A very basic flake";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs }: let
+    supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
+    forEachSupportedSystem = f:
+      nixpkgs.lib.genAttrs supportedSystems (system:
+        f {
+          pkgs = import nixpkgs {
+            inherit system;
+          };
+        });
+  in {
+    devShells = forEachSupportedSystem ({pkgs}: {
+      default = pkgs.mkShell {
+        nativeBuildInputs = with pkgs; [
+          go
+          gopls
+          deltachat-rpc-server
+        ];
+      };
+      # not core included, for when you want to set it to a local core checkout via $PATH
+      # you can start this with `nix develop .#no_core`
+      no_core = pkgs.mkShell {
+        nativeBuildInputs = with pkgs; [
+          go
+          gopls
+        ];
+      };
+    });
+  };
+}
diff --git a/scripts/run_tests.sh b/scripts/run_tests.sh
index b624872..117504f 100755
--- a/scripts/run_tests.sh
+++ b/scripts/run_tests.sh
@@ -1,4 +1,4 @@
-#!/bin/env bash
+#!/usr/bin/env bash
 
 echo "Checking code with gofmt..."
 OUTPUT=`gofmt -d .`