Added basic flake.nix

flake.nix

@@ -0,0 +1,73 @@
+{
+  description = "Sparse C2 framework";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    crane = {
+      url = "github:ipetkov/crane";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, crane, fenix }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+
+        toolchain = with fenix.packages.${system};
+          combine [
+            stable.rustc
+            stable.cargo
+            targets.x86_64-pc-windows-gnu.stable.rust-std
+            targets.x86_64-unknown-linux-musl.stable.rust-std
+            stable.rust-analyzer
+          ];
+
+        craneLib = (crane.mkLib pkgs).overrideToolchain toolchain;
+
+        src = craneLib.cleanCargoSource (craneLib.path ./.);
+
+        commonArgs = {
+          inherit src;
+
+          strictDeps = true;
+
+          CARGO_BUILD_TARGET = "x86_64-unknown-linux-musl";
+        };
+
+        artifacts = craneLib.buildDepsOnly commonArgs;
+
+        crate = craneLib.buildPackage (commonArgs // {
+          inherit artifacts;
+          buildInputs = with pkgs; [ cmake make ];
+        });
+      in with pkgs; {
+        devShells.default = craneLib.devShell rec {
+          name = "sparse";
+
+          buildInputs = [ cmake make ];
+        };
+
+        packages = {
+          default = crate;
+
+          windows = craneLib.buildPackage (commonArgs // {
+            doCheck = false;
+
+            CARGO_BUILD_TARGET = "x86_64-pc-windows-gnu";
+
+            depsBuildBUild = [
+              pkgsCross.mingwW64.stdenv.cc
+              pkgsCross.mingwW64.windows.pthreads
+            ];
+          });
+
+          checks = { inherit crate; };
+        };
+      });
+}