diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..f340798
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,107 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1676283394,
+        "narHash": "sha256-XX2f9c3iySLCw54rJ/CZs+ZK6IQy7GXNY4nSOyu2QG4=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "3db36a8b464d0c4532ba1c7dda728f4576d6d073",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-utils",
+        "type": "indirect"
+      }
+    },
+    "flake-utils_2": {
+      "locked": {
+        "lastModified": 1642700792,
+        "narHash": "sha256-XqHrk7hFb+zBvRg6Ghl+AZDq03ov6OshJLiSWOoX5es=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "846b2ae0fc4cc943637d3d1def4454213e203cba",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "mach-nix": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs",
+        "pypi-deps-db": "pypi-deps-db"
+      },
+      "locked": {
+        "lastModified": 1654084003,
+        "narHash": "sha256-j/XrVVistvM+Ua+0tNFvO5z83isL+LBgmBi9XppxuKA=",
+        "owner": "DavHau",
+        "repo": "mach-nix",
+        "rev": "7e14360bde07dcae32e5e24f366c83272f52923f",
+        "type": "github"
+      },
+      "original": {
+        "id": "mach-nix",
+        "ref": "3.5.0",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1643805626,
+        "narHash": "sha256-AXLDVMG+UaAGsGSpOtQHPIKB+IZ0KSd9WS77aanGzgc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "554d2d8aa25b6e583575459c297ec23750adb6cb",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1678298120,
+        "narHash": "sha256-iaV5xqgn29xy765Js3EoZePQyZIlLZA3pTYtTnKkejg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "1e383aada51b416c6c27d4884d2e258df201bc11",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "pypi-deps-db": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1643877077,
+        "narHash": "sha256-jv8pIvRFTP919GybOxXE5TfOkrjTbdo9QiCO1TD3ZaY=",
+        "owner": "DavHau",
+        "repo": "pypi-deps-db",
+        "rev": "da53397f0b782b0b18deb72ef8e0fb5aa7c98aa3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "DavHau",
+        "repo": "pypi-deps-db",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "mach-nix": "mach-nix",
+        "nixpkgs": "nixpkgs_2"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..714360d
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,36 @@
+{
+  description = "Dvd ripper and transcoder";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+  inputs.mach-nix.url = "github:mach-nix/3.5.0";
+
+  outputs = { self, nixpkgs, flake-utils, mach-nix }:
+    flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
+      let pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        devShells.default = pkgs.mkShell {
+          packages = with pkgs; [
+            # Manage dependencies via requirements.txt file
+            # !! Did not work for playsound, since gst-python no python package??
+            # (mach-nix.lib.${system}.mkPython {
+            #   requirements = builtins.readFile ./requirements.txt;
+            # })
+
+            # Python dependencies
+            (python3.withPackages
+              (p: with p; [ gst-python pygobject3 playsound python-dotenv ]))
+
+            # Playsound dependencies
+            gobject-introspection
+            gst_all_1.gst-devtools
+
+            # Script dependencies
+            dvdbackup
+            handbrake
+            rsync
+            libnotify
+          ];
+        };
+      });
+}
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..1953c75
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+# playsound
+# pygobject # dependency of playsound
+python-dotenv
diff --git a/ripper/requirements.txt b/ripper/requirements.txt
deleted file mode 100644
index 39bee82..0000000
--- a/ripper/requirements.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-playsound==1.3.0
-python-dotenv==1.0
diff --git a/ripper/rip_dvd.py b/ripper/rip_dvd.py
index c901117..b00076f 100755
--- a/ripper/rip_dvd.py
+++ b/ripper/rip_dvd.py
@@ -43,9 +43,9 @@ def main():
     success = rip_to_tmp_dir(args)
     program_execution_time_str = get_program_execution_time_str(program_start_time)
     if success:
+        mv_ripped_from_tmp_to_ripped_dir(args)
         write_to_logfile(args, "Success")
         notify_ripping_success(args, program_execution_time_str)
-        mv_ripped_from_tmp_to_ripped_dir(args)
     else:
         write_to_logfile(args, "FAILURE")
         notify_ripping_error(args, program_execution_time_str)
diff --git a/transcoder/requirements.txt b/transcoder/requirements.txt
deleted file mode 100644
index 3e75cf5..0000000
--- a/transcoder/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-python-dotenv==1.0