Project setup

.envrc

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+use flake

.gitignore

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+target

Cargo.toml

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+[package]
+name = "stm32f469ni"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

flake.lock

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+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1775036866,
+        "narHash": "sha256-ZojAnPuCdy657PbTq5V0Y+AHKhZAIwSIT2cb8UgAz/U=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "6201e203d09599479a3b3450ed24fa81537ebc4e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1775185947,
+        "narHash": "sha256-8ctPmj6RME4q4ELeg+BuY9lV/34M4AG1CNc0Im9PDDk=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "199eeb6748116f7da4fbd3a680bc854e99d9132b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "My rust development shell";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = {nixpkgs, ...} @ inputs: let
+    system = "x86_64-linux";
+    overlays = [(import inputs.rust-overlay)];
+    pkgs = import nixpkgs {
+      inherit system overlays;
+    };
+  in {
+    devShells."${system}" = {
+      default = pkgs.mkShell {
+        buildInputs = with pkgs; [
+          gcc
+          gnumake
+          rust-bin.stable.latest.default
+          evcxr
+        ];
+      };
+    };
+  };
+}

src/main.rs

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+fn main() {
+    println!("Hello, world!");
+}