balls

flake.nix

@@ -0,0 +1,103 @@
+{
+  description = "A Nix-flake-based Rust development environment with build and run support";
+
+  inputs = {
+    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*"; # unstable
+
+    fenix = {
+      url = "https://flakehub.com/f/nix-community/fenix/0.1.*";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, nixpkgs, fenix }:
+    let
+      supportedSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+
+      forEachSupportedSystem = f:
+        nixpkgs.lib.genAttrs supportedSystems (system:
+          f {
+            pkgs = import nixpkgs {
+              inherit system;
+              overlays = [ self.overlays.default ];
+            };
+          }
+        );
+    in
+    {
+      overlays.default = final: prev: {
+        rustToolchain =
+          with fenix.packages.${prev.stdenv.hostPlatform.system};
+          combine (with stable; [
+            cargo
+            rustc
+            clippy
+            rustfmt
+            rust-src
+          ]);
+      };
+
+      packages = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.rustPlatform.buildRustPackage {
+          pname = "whereAmI";
+          version = "0.1.0";
+
+          # Keep Cargo.lock even if gitignored
+          src = pkgs.lib.cleanSourceWith {
+            src = ./.;
+            filter = path: type:
+              let
+                name = pkgs.lib.baseNameOf path;
+              in
+                name == "Cargo.lock"
+                || pkgs.lib.cleanSourceFilter path type;
+          };
+
+          cargoLock = {
+            lockFile = ./Cargo.lock;
+          };
+
+          nativeBuildInputs = [
+            pkgs.pkg-config
+          ];
+
+          buildInputs = [
+            pkgs.openssl
+          ];
+
+          meta = with pkgs.lib; {
+            description = "A simple Rust program to show current location info";
+            mainProgram = "whereAmI";
+            license = licenses.mit;
+            maintainers = [ ];
+          };
+        };
+      });
+
+      devShells = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.mkShell {
+          packages = with pkgs; [
+            rustToolchain
+            openssl
+            pkg-config
+            cargo-deny
+            cargo-edit
+            cargo-watch
+            rust-analyzer
+          ];
+
+          env = {
+            # Needed for rust-analyzer stdlib discovery
+            RUST_SRC_PATH =
+              "${pkgs.rustToolchain}/lib/rustlib/src/rust/library";
+          };
+        };
+      });
+    };
+}
+