Migrated to nix for dependency managment

flake.nix

@@ -0,0 +1,25 @@
+{
+  description = "Pre-built CPU-only OpenCV packages for Python.  ";
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    opencv-python-related.url = "gitlab:all-dressed-programming/opencv-python-related";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, opencv-python-related }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        pythonPackages = pkgs.python312Packages // opencv-python-related.packages.${system}.python312Packages;
+        virtual-env = pkgs.python312.withPackages (ps: [ ps.matplotlib
+                                                         pythonPackages.opencv4
+                                                         pythonPackages.boxmot
+                                                         pythonPackages.ultralytics ]);
+
+      in {
+        packages = {
+          env = virtual-env;
+        };
+        devShells.default = pkgs.mkShell { buildInputs = [ virtual-env pkgs.yt-dlp pkgs.ffmpeg_7]; };
+      });
+}