Refactor packages

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

packages/obsidian/plugins/excalidraw/default.nix

@@ -0,0 +1,49 @@
+{ pkgs, ... }:
+# AUTO-UPDATE: nix-update --flake obsidian-plugin-excalidraw --subpackage mathjaxToSVG
+pkgs.buildNpmPackage rec {
+  pname = "obsidian.plugins.excalidraw";
+  version = "2.8.3";
+
+  pkg = pkgs.fetchFromGitHub {
+    owner = "zsviczian";
+    repo = "obsidian-excalidraw-plugin";
+    rev = version;
+    hash = "sha256-vfswTT+FzzcddUQSoy6xseE+PzsWtRx8RkYzqGn6wFQ=";
+  };
+
+  mathjaxToSVG = pkgs.buildNpmPackage {
+    pname = "obsidian.plugins.excalidraw.mathjaxToSVG";
+    version = "1.0.0";
+
+    src = "${pkg}/MathjaxToSVG";
+    npmDepsHash = "sha256-AosKWlX08dpXNQ2YlrfR6jEInmU02Ztf26nmV19Jxok=";
+
+    configurePhase = ''
+      mkdir dist
+    '';
+
+    installPhase = ''
+      mkdir -p $out
+      cp ./dist/index.js $out/index.js
+    '';
+  };
+
+  src = pkg;
+  patches = [ ./package-lock.patch ];
+
+  npmDepsHash = "sha256-6Y22TD6BMljRGrL/qT54F7bFXcQbY1bQ5GuKEqAXIwY=";
+  npmPackFlags = [ "--ignore-scripts" ];
+
+  configurePhase = ''
+    mkdir dist
+    mkdir -p ./MathjaxToSVG/dist
+    cp ${mathjaxToSVG}/index.js ./MathjaxToSVG/dist/index.js
+  '';
+
+  installPhase = ''
+    mkdir -p $out
+    cp ./dist/manifest.json $out/manifest.json
+    cp ./dist/main.js $out/main.js
+    cp ./dist/styles.css $out/styles.css
+  '';
+}