output: format init.lua

lib/builders.nix

@@ -0,0 +1,30 @@
+{
+  lib,
+  pkgs,
+}: {
+  /*
+  Write a lua file to the nix store, formatted using stylua.
+
+  # Type
+
+  ```
+  writeLua :: String -> String -> Derivation
+  ```
+
+  # Arguments
+
+  - [name] The name of the derivation
+  - [text] The content of the lua file
+  */
+  writeLua = name: text:
+    pkgs.runCommand name {inherit text;} ''
+      echo -n "$text" > "$out"
+
+      ${lib.getExe pkgs.stylua} \
+        --no-editorconfig \
+        --line-endings Unix \
+        --indent-type Spaces \
+        --indent-width 4 \
+        "$out"
+    '';
+}