feat(finance): add option-analysis package

Add Trakbit option-analysis tool for Indian options market analytics. Package built from source using Rust, provides keyboard-first TUI interface for designing option strategies with direct Upstox API integration.

Author: DivitMittal

home/tools/finance.nix

@@ -9,6 +9,10 @@
       tickrs
       cointop
       ;
+    inherit
+      (pkgs.custom)
+      option-analysis
+      ;
 
     hisaab = pkgs.writeShellScriptBin "hisaab" ''
       if [ $# -eq 1 ]; then

pkgs/custom/option-analysis/package.nix

@@ -0,0 +1,40 @@
+{
+  lib,
+  rustPlatform,
+  fetchFromGitHub,
+  pkg-config,
+  openssl,
+  ...
+}:
+rustPlatform.buildRustPackage {
+  pname = "option-analysis";
+  version = "0.1.0";
+
+  src = fetchFromGitHub {
+    owner = "harsh-vardhhan";
+    repo = "option-analysis";
+    rev = "master";
+    hash = "sha256-QOWZOvW9bqzFxZkUaWB0+sUVruhq7rFlttAq3EcDLa4=";
+  };
+
+  cargoHash = "sha256-bIP40cfMNrekqXotKzfMZSb+sfoQQ0ybiLBBrrU8vUQ=";
+
+  nativeBuildInputs = [
+    pkg-config
+  ];
+
+  buildInputs = [
+    openssl
+  ];
+
+  doCheck = false;
+
+  meta = {
+    description = "Trakbit - Keyboard-first options analytics tool for Indian markets";
+    homepage = "https://github.com/harsh-vardhhan/option-analysis";
+    license = lib.licenses.mit;
+    platforms = lib.platforms.all;
+    maintainers = with lib.maintainers; [DivitMittal];
+    mainProgram = "option-analysis";
+  };
+}