Add a nix flake build for more plug and play experience

README.md

@@ -41,6 +41,11 @@ Alternatively, [vcpkg](https://github.com/Microsoft/vcpkg) can be used:
 Alternatively, one can use the platform-dependent build system, for example `Make`:
 
 * `make -C build`
+### Nix (flakes)
+With nix and flakes enabled:
+* To build `nix build .`
+* To build and run `nix run .`
+
 ### Arch Linux
 * `cd ~`
 * `git clone https://github.com/HackerPoet/MarbleMarcher.git`

flake.nix

@@ -0,0 +1,36 @@
+{
+  description = "MarbleMatcher";
+
+  inputs.nixpkgs.url = "github:nixos/nixpkgs";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem
+      (system:
+        let 
+          pkgs = nixpkgs.legacyPackages.${system};
+          name = "MarbleMatcher";
+          inputs = with pkgs; [ eigen sfml cmake gnumake libGL ];
+          package = pkgs.stdenv.mkDerivation {
+            name = name;
+            src = self;
+            buildInputs = inputs;
+            buildPhase = ''
+              cmake -DCMAKE_CXX_FLAGS="-I/usr/local/include" .
+              cmake --build .
+            '';
+            installPhase = ''
+              mkdir -p $out
+              cp MarbleMarcher $out/
+            '';
+          };
+        in
+        {
+          defaultApp = {
+            type = "app";
+            program = "${package}/MarbleMarcher";
+          };
+          devShell = pkgs.mkShell { buildInputs = inputs; };
+        }
+      );
+}