Refactor packages

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

packages/obsidian/themes/minimal/default.nix

@@ -0,0 +1,28 @@
+{ pkgs, ... }:
+# AUTO-UPDATE: nix-update --flake obsidian-theme-minimal
+pkgs.buildNpmPackage rec {
+  pname = "obsidian-theme-minimal";
+  version = "7.7.19";
+
+  src = pkgs.fetchFromGitHub {
+    owner = "kepano";
+    repo = "obsidian-minimal";
+    rev = version;
+    hash = "sha256-1NUnOmQVbikUNcQcPSi0JYxMR6z7s1gZ1iFmR5SOkbM=";
+  };
+
+  npmDepsHash = "sha256-R+XeEkDP0MxNQsFCWmHXKtLBcmiOTv9Nw7t2e27kvQg=";
+  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
+  '';
+}