initial commit

flake.nix

@@ -0,0 +1,40 @@
+{
+  description = "People Counter with YOLOv8, ByteTrack and Streamlit";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { nixpkgs, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+
+        pythonEnv = pkgs.python313.withPackages (ps: with ps; [
+          numpy
+          opencv-python
+          streamlit
+          pyyaml
+          pillow
+          ultralytics
+          torch
+          torchvision
+          prometheus-client
+        ]);
+      in {
+        devShell = pkgs.mkShell {
+          buildInputs = [
+            pythonEnv
+            pkgs.ffmpeg
+            pkgs.mediamtx
+          ];
+
+          shellHook = ''
+            export PYTHONUNBUFFERED=1
+            export MTX_PATHS_ALL_SOURCE=publisher
+            echo "People Counter DevShell ready"
+          '';
+        };
+      });
+}