refactor: made pkgs dendrites

modules/nixos/pkgs/e621-downloader.nix

@@ -0,0 +1,46 @@
+{...}: let
+  package = {
+    lib,
+    rustPlatform,
+    fetchFromGitHub,
+    pkg-config,
+    openssl,
+    ...
+  }:
+    rustPlatform.buildRustPackage rec {
+      pname = "e621-downloader";
+      version = "1.7.2";
+
+      src = fetchFromGitHub {
+        owner = "McSib";
+        repo = "e621_downloader";
+        rev = version;
+        hash = "sha256-4z+PrCv8Mlp0VOJ5Akv1TXrJir1Ws/+45a6VCZGuCtk=";
+      };
+
+      cargoHash = "sha256-/yqNYjP7BuFQWilL2Ty+E5rd8qXj30twteptHx7cLRo=";
+
+      nativeBuildInputs = [
+        pkg-config
+      ];
+
+      buildInputs = [
+        openssl
+      ];
+
+      meta = with lib; {
+        description = "E621 and E926 downloader made in Rust";
+        homepage = "https://github.com/McSib/e621_downloader";
+        license = licenses.asl20;
+        mainProgram = "e621_downloader";
+      };
+    };
+in {
+  flake.commonModules.e621-downloader = {pkgs, ...}: {
+    nixpkgs.overlays = [
+      (final: prev: {
+        e621-downloader = pkgs.callPackage package {};
+      })
+    ];
+  };
+}