Move obsidian config

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

hosts/common/user/configs/gui/obsidian/config/themes/minimal/default.nix

@@ -0,0 +1,30 @@
+{
+  pkgs ? import <nixpkgs> { },
+  ...
+}:
+pkgs.buildNpmPackage rec {
+  pname = "obsidian.themes.minimal";
+  version = "7.7.7";
+
+  src = pkgs.fetchFromGitHub {
+    owner = "kepano";
+    repo = "obsidian-minimal";
+    rev = "${version}";
+    hash = "sha256-Atb9ZVou4EkfppV7VvTEMG/UruKlADctbXL1M8vvhxQ=";
+  };
+
+  npmDepsHash = "sha256-PzsZv/On8ci6EkF3WE4aez3/jQu5AqyJxFUzJk+Pn0c=";
+  npmPackFlags = [ "--ignore-scripts" ];
+
+  nativeBuildInputs = with pkgs; [ sass ];
+
+  buildPhase = ''
+    npx grunt cssmin
+  '';
+
+  installPhase = ''
+    mkdir -p $out
+    cp ./manifest.json $out/manifest.json
+    cp ./theme.css $out/theme.css
+  '';
+}