init

.gitignore

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+/target
+result*

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "quick-start-simple"
+version = "0.1.0"

Cargo.toml

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+[package]
+name = "quick-start-simple"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

flake.nix

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+{
+  description = "Build a cargo project without extra checks";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+
+    crane = {
+      url = "github:ipetkov/crane";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, crane, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+        };
+
+        craneLib = crane.lib.${system};
+        my-crate = craneLib.buildPackage {
+          src = craneLib.cleanCargoSource (craneLib.path ./.);
+
+          buildInputs = [
+            # Add additional build inputs here
+          ] ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
+            # Additional darwin specific inputs can be set here
+            pkgs.libiconv
+          ];
+
+          # Additional environment variables can be set directly
+          # MY_CUSTOM_VAR = "some value";
+        };
+      in
+      {
+        checks = {
+          inherit my-crate;
+        };
+
+        packages.default = my-crate;
+
+        apps.default = flake-utils.lib.mkApp {
+          drv = my-crate;
+        };
+
+        devShells.default = pkgs.mkShell {
+          inputsFrom = builtins.attrValues self.checks.${system};
+
+          # Additional dev-shell environment variables can be set directly
+          # MY_CUSTOM_DEVELOPMENT_VAR = "something else";
+
+          # Extra inputs can be added here
+          nativeBuildInputs = with pkgs; [
+            cargo
+            rustc
+          ];
+        };
+      });
+}

src/main.rs

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