Blinky STM32F3-DISCOVERY

flake.nix

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+# Adapted from https://wiki.nixos.org/wiki/Rust#Installation_via_rustup
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+  outputs =
+    {
+      nixpkgs,
+      flake-utils,
+      ...
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+        };
+      in
+      with pkgs;
+      {
+        devShells.default = mkShell {
+          strictDeps = true;
+          nativeBuildInputs = [
+            rustup
+            rustPlatform.bindgenHook
+            pkg-config
+          ];
+          buildInputs = [
+            # Libraries here
+            openssl
+            openocd
+          ];
+          RUSTC_VERSION = "stable";
+          shellHook = ''
+            export PATH="''${RUSTUP_HOME:-~/.rustup}/toolchains/$RUSTC_VERSION-${stdenv.hostPlatform.rust.rustcTarget}/bin:''${CARGO_HOME:-~/.cargo}/bin:$PATH"
+          '';
+        };
+      }
+    );
+}