ft: add clean theme

flake.nix

@@ -0,0 +1,35 @@
+{
+  description = "Nightly Typst with Typst LSP";
+
+  inputs.typst-lsp.url = "github:nvarner/typst-lsp";
+  inputs.typst.url = "github:typst/typst";
+  inputs.utils.url = "github:numtide/flake-utils";
+  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+
+  outputs = {
+    nixpkgs,
+    utils,
+    typst,
+    typst-lsp,
+    ...
+  }:
+    utils.lib.eachDefaultSystem (system: let
+      typst-overlay = _self: _super: {
+        typst-lsp = typst-lsp.packages.${system}.default;
+        typst = typst.packages.${system}.default.overrideAttrs (_old: {
+          dontCheck = true;
+        });
+      };
+      pkgs = nixpkgs.legacyPackages.${system}.appendOverlays [typst-overlay];
+      typst-shell = pkgs.mkShell {
+        nativeBuildInputs = [
+          pkgs.typst-lsp
+          pkgs.typst
+        ];
+      };
+    in {
+      devShells.default = typst-shell;
+      overlays.default = typst-overlay;
+      legacyPackages = pkgs;
+    });
+}