Add some personal obsidian configs

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

hosts/common/user/configs/gui/obsidian/plugins/tasks/default.nix

@@ -0,0 +1,34 @@
+{
+  pkgs ? import <nixpkgs> { },
+  ...
+}:
+pkgs.stdenv.mkDerivation rec {
+  pname = "obsidian.plugins.tasks";
+  version = "7.6.1";
+
+  src = pkgs.fetchFromGitHub {
+    owner = "obsidian-tasks-group";
+    repo = "obsidian-tasks";
+    rev = "${version}";
+    hash = "sha256-7VvoaX2WkKrg2WpR+JQcpT73rAhZXJ3FXr2BBUIwrmA=";
+  };
+
+  offlineCache = pkgs.fetchYarnDeps {
+    yarnLock = src + "/yarn.lock";
+    hash = "sha256-3ReJNZKgecKTbXTWZGSY2hBLHysdbr/iKFS9tgCJvW0=";
+  };
+
+  nativeBuildInputs = with pkgs; [
+    nodejs
+    yarnConfigHook
+    yarnBuildHook
+    npmHooks.npmInstallHook
+  ];
+
+  installPhase = ''
+    mkdir -p $out
+    cp ./manifest.json $out/manifest.json
+    cp ./main.js $out/main.js
+    cp ./styles.css $out/styles.css
+  '';
+}