?

flake.nix

@@ -1,60 +1,45 @@
 {
-  description = "Image Processor API";
+  description = "A C library with a clean API";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
-    # Ghostty uses 'systems' to be cleaner, we can do similar or stick to a list
-  };
-
-  # This mirrors the Ghostty 'nixConfig' to ensure settings stay local to the project
-  nixConfig = {
-    extra-substituters = ["https://cache.nixos.org"];
-    extra-trusted-public-keys = ["cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="];
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
   };
 
   outputs = {
     self,
     nixpkgs,
   }: let
-    supportedSystems = ["aarch64-darwin" "x86_64-darwin" "aarch64-linux" "x86_64-linux"];
-    # A helper to generate outputs for all systems
-    forAllSystems = f: nixpkgs.lib.genAttrs supportedSystems (system: f (import nixpkgs {inherit system;}));
+    # Support for multiple systems (Linux and macOS)
+    supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
+    forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+    pkgsFor = system: import nixpkgs {inherit system;};
   in {
-    # 1. THE PACKAGE (What you 'pull' into other projects)
-    packages = forAllSystems (pkgs: {
+    # This is the actual library package
+    packages = forAllSystems (system: let
+      pkgs = pkgsFor system;
+    in {
       default = pkgs.stdenv.mkDerivation {
-        pname = "image_processor";
+        pname = "my-c-api";
         version = "0.1.0";
         src = ./.;
 
-        nativeBuildInputs = [pkgs.cmake pkgs.pkg-config];
-        buildInputs = [pkgs.libjpeg_turbo];
+        # Add dependencies here
+        buildInputs = [];
+        nativeBuildInputs = [pkgs.pkg-config];
 
-        # Ensure headers are found in the dev environment
-        propagatedBuildInputs = [pkgs.libjpeg_turbo];
+        # Nix expects a standard 'make install' by default.
+        # Ensure your Makefile handles $(DESTDIR)$(PREFIX) correctly.
+        installFlags = ["PREFIX=$(out)"];
       };
     });
 
-    # 2. THE DEV SHELL (What 'direnv' uses)
-    devShells = forAllSystems (pkgs: {
+    # This provides 'nix develop' for you to work on the API itself
+    devShells = forAllSystems (system: let
+      pkgs = pkgsFor system;
+    in {
       default = pkgs.mkShell {
-        # Use 'inputsFrom' so the shell always matches the package
-        inputsFrom = [self.packages.${pkgs.system}.default];
-
-        # Add extra dev tools you only want when coding, not building
-        nativeBuildInputs = with pkgs; [
-          gdb
-          pkg-config
-        ];
-
-        shellHook = ''
-          # These exports make sure your C compiler finds the Nix-provided libs
-          export CPATH="${pkgs.libjpeg_turbo.dev}/include:$CPATH"
-          export LIBRARY_PATH="${pkgs.libjpeg_turbo.out}/lib:$LIBRARY_PATH"
-          export PKG_CONFIG_PATH="${pkgs.libjpeg_turbo.dev}/lib/pkgconfig:$PKG_CONFIG_PATH"
-
-          echo "⚙️ Image Processor API Dev Shell Loaded"
-        '';
+        inputsFrom = [self.packages.${system}.default];
+        packages = with pkgs; [gdb valgrind clang-tools];
       };
     });
   };