Initial commit.

.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"
+version = "0.1.0"

Cargo.toml

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

deny.toml

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+[licenses]
+allow = [
+  "MIT"
+]

flake.lock

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+{
+  "nodes": {
+    "advisory-db": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1706115649,
+        "narHash": "sha256-Qrqb54qGaRsFdLDj8EJtI5leFGFfqWHLRgC+t6KWlpQ=",
+        "owner": "rustsec",
+        "repo": "advisory-db",
+        "rev": "1d2202ea2b32fabd3307641010301bfe187ef11a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rustsec",
+        "repo": "advisory-db",
+        "type": "github"
+      }
+    },
+    "crane": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1706473964,
+        "narHash": "sha256-Fq6xleee/TsX6NbtoRuI96bBuDHMU57PrcK9z1QEKbk=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "c798790eabec3e3da48190ae3698ac227aab770c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
+    "fenix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": []
+      },
+      "locked": {
+        "lastModified": 1706595721,
+        "narHash": "sha256-nf5/lPawM20WO1gHAlsUwDEJ4v+InC3BYYV1EBsBJZk=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "46a368edf5f1cc16573157797e5acead834d5b2c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1705309234,
+        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1706589919,
+        "narHash": "sha256-pNHnDITxSI3a17GOF1RUF3jBO1OiNYTRH2yV/cJG4m4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "222c1940fafeda4dea161858ffe6ebfc853d3db5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "advisory-db": "advisory-db",
+        "crane": "crane",
+        "fenix": "fenix",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "Build a cargo project";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+
+    crane = {
+      url = "github:ipetkov/crane";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.rust-analyzer-src.follows = "";
+    };
+
+    flake-utils.url = "github:numtide/flake-utils";
+
+    advisory-db = {
+      url = "github:rustsec/advisory-db";
+      flake = false;
+    };
+  };
+
+  outputs = { self, nixpkgs, crane, fenix, flake-utils, advisory-db, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+
+        inherit (pkgs) lib;
+
+        craneLib = crane.lib.${system};
+        src = craneLib.cleanCargoSource (craneLib.path ./.);
+
+        # Common arguments can be set here to avoid repeating them later
+        commonArgs = {
+          inherit src;
+          strictDeps = true;
+
+          buildInputs = [
+            # Add additional build inputs here
+          ] ++ 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";
+        };
+
+        craneLibLLvmTools = craneLib.overrideToolchain
+          (fenix.packages.${system}.complete.withComponents [
+            "cargo"
+            "llvm-tools"
+            "rustc"
+          ]);
+
+        # Build *just* the cargo dependencies, so we can reuse
+        # all of that work (e.g. via cachix) when running in CI
+        cargoArtifacts = craneLib.buildDepsOnly commonArgs;
+
+        # Build the actual crate itself, reusing the dependency
+        # artifacts from above.
+        my-crate = craneLib.buildPackage (commonArgs // {
+          inherit cargoArtifacts;
+        });
+      in
+      {
+        checks = {
+          # Build the crate as part of `nix flake check` for convenience
+          inherit my-crate;
+
+          # Run clippy (and deny all warnings) on the crate source,
+          # again, resuing the dependency artifacts from above.
+          #
+          # Note that this is done as a separate derivation so that
+          # we can block the CI if there are issues here, but not
+          # prevent downstream consumers from building our crate by itself.
+          my-crate-clippy = craneLib.cargoClippy (commonArgs // {
+            inherit cargoArtifacts;
+            cargoClippyExtraArgs = "--all-targets -- --deny warnings";
+          });
+
+          my-crate-doc = craneLib.cargoDoc (commonArgs // {
+            inherit cargoArtifacts;
+          });
+
+          # Check formatting
+          my-crate-fmt = craneLib.cargoFmt {
+            inherit src;
+          };
+
+          # Audit dependencies
+          my-crate-audit = craneLib.cargoAudit {
+            inherit src advisory-db;
+          };
+
+          # Audit licenses
+          my-crate-deny = craneLib.cargoDeny {
+            inherit src;
+          };
+
+          # Run tests with cargo-nextest
+          # Consider setting `doCheck = false` on `my-crate` if you do not want
+          # the tests to run twice
+          my-crate-nextest = craneLib.cargoNextest (commonArgs // {
+            inherit cargoArtifacts;
+            partitions = 1;
+            partitionType = "count";
+          });
+        };
+
+        packages = {
+          default = my-crate;
+        } // lib.optionalAttrs (!pkgs.stdenv.isDarwin) {
+          my-crate-llvm-coverage = craneLibLLvmTools.cargoLlvmCov (commonArgs // {
+            inherit cargoArtifacts;
+          });
+        };
+
+        apps.default = flake-utils.lib.mkApp {
+          drv = my-crate;
+        };
+
+        devShells.default = craneLib.devShell {
+          # Inherit inputs from checks.
+          checks = self.checks.${system};
+
+          # Additional dev-shell environment variables can be set directly
+          # MY_CUSTOM_DEVELOPMENT_VAR = "something else";
+
+          # Extra inputs can be added here; cargo and rustc are provided by default.
+          packages = [
+            # pkgs.ripgrep
+          ];
+        };
+      });
+}

src/main.rs

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