?

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "A C library with a clean API";
+  description = "Image Processor C API";
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
@@ -9,37 +9,34 @@
     self,
     nixpkgs,
   }: let
-    # 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 {
-    # This is the actual library package
     packages = forAllSystems (system: let
-      pkgs = pkgsFor system;
+      pkgs = import nixpkgs {inherit system;};
     in {
       default = pkgs.stdenv.mkDerivation {
-        pname = "my-c-api";
+        pname = "image-processor";
         version = "0.1.0";
-        src = ./.;
+        src = ./.; # Since the flake is in the repo, we use local source
 
-        # Add dependencies here
+        # nativeBuildInputs are tools needed at build time (like CMake)
+        nativeBuildInputs = [pkgs.cmake pkgs.pkg-config];
+
+        # buildInputs are libraries your API depends on (e.g., libpng, opencv)
         buildInputs = [];
-        nativeBuildInputs = [pkgs.pkg-config];
 
-        # Nix expects a standard 'make install' by default.
-        # Ensure your Makefile handles $(DESTDIR)$(PREFIX) correctly.
-        installFlags = ["PREFIX=$(out)"];
+        # Nix automatically runs: cmakeConfigurePhase, buildPhase, installPhase
+        # You just need to ensure your CMakeLists.txt has 'install()' targets.
       };
     });
 
-    # This provides 'nix develop' for you to work on the API itself
     devShells = forAllSystems (system: let
-      pkgs = pkgsFor system;
+      pkgs = import nixpkgs {inherit system;};
     in {
       default = pkgs.mkShell {
         inputsFrom = [self.packages.${system}.default];
-        packages = with pkgs; [gdb valgrind clang-tools];
+        packages = [pkgs.gdb];
       };
     });
   };