test case

flake.lock

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+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1655567057,
+        "narHash": "sha256-Cc5hQSMsTzOHmZnYm8OSJ5RNUp22bd5NADWLHorULWQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e0a42267f73ea52adc061a64650fddc59906fc99",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "This is a test if lualatex works";
+
+  inputs = {
+    nixpkgs = {
+      type = "indirect";
+      id = "nixpkgs";
+    };
+  };
+
+  outputs = {self, nixpkgs} :
+  let
+
+    # System types to support.
+    supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
+
+    # Helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ... }'.
+    forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+
+    # Nixpkgs instantiated for supported system types.
+    nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
+
+
+  in {
+    packages = forAllSystems (system:
+      let
+        pkgs = nixpkgsFor.${system};
+        latexdeps = {inherit (pkgs.texlive) scheme-full;};
+        latex = pkgs.texlive.combine latexdeps;
+      in {
+        default = pkgs.stdenvNoCC.mkDerivation {
+          name = "output.pdf";
+          buildInputs = [latex];
+          src = self;
+          buildPhase = ''
+            lualatex src/Main.tex
+          '';
+          installPhase = ''
+            mkdir -p $out
+            cp Main.pdf $out/output.pdf
+          '';
+        };
+      }
+    );
+  };
+}
+
+      

src/Main.tex

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+\documentclass{scrartcl}
+\begin{document}
+  Hello World!
+\end{document}