Initial commit 🎉

Initialize with `nix flake init -t github:ipetkov/crane#quick-start` and change a few small things.

.gitignore

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+/target/
+/result*

Cargo.toml

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+[package]
+name = "dyndnsd"
+version = "0.1.0"
+edition = "2021"
+license = "AGPL-3.0-only"
+
+# 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.nix

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+{
+  description = "Build dyndnsd";
+
+  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.
+        dyndnsd = craneLib.buildPackage (commonArgs // {
+          inherit cargoArtifacts;
+        });
+      in
+      {
+        checks = {
+          # Build the crate as part of `nix flake check` for convenience
+          inherit dyndnsd;
+
+          # Run clippy (and deny all warnings) on the crate source,
+          # again, reusing 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.
+          dyndnsd-clippy = craneLib.cargoClippy (commonArgs // {
+            inherit cargoArtifacts;
+            cargoClippyExtraArgs = "--all-targets -- --deny warnings";
+          });
+
+          dyndnsd-doc = craneLib.cargoDoc (commonArgs // {
+            inherit cargoArtifacts;
+          });
+
+          # Check formatting
+          dyndnsd-fmt = craneLib.cargoFmt {
+            inherit src;
+          };
+
+          # Audit dependencies
+          dyndnsd-audit = craneLib.cargoAudit {
+            inherit src advisory-db;
+          };
+
+          # Audit licenses
+          dyndnsd-deny = craneLib.cargoDeny {
+            inherit src;
+          };
+
+          # Run tests with cargo-nextest
+          # Consider setting `doCheck = false` on `dyndnsd` if you do not want
+          # the tests to run twice
+          dyndnsd-nextest = craneLib.cargoNextest (commonArgs // {
+            inherit cargoArtifacts;
+            partitions = 1;
+            partitionType = "count";
+          });
+        };
+
+        packages = {
+          default = dyndnsd;
+        } // lib.optionalAttrs (!pkgs.stdenv.isDarwin) {
+          dyndnsd-llvm-coverage = craneLibLLvmTools.cargoLlvmCov (commonArgs // {
+            inherit cargoArtifacts;
+          });
+        };
+
+        apps.default = flake-utils.lib.mkApp {
+          drv = dyndnsd;
+        };
+
+        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!");
+}