Flake : Add devShell for building.

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1707092692,
+        "narHash": "sha256-ZbHsm+mGk/izkWtT4xwwqz38fdlwu7nUUKXTOmm4SyE=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "faf912b086576fd1a15fca610166c98d47bc667e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,56 @@
+{
+	description = "LuaLaTeX build env.";
+
+	inputs = {
+		nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+	};
+
+	outputs = { self, nixpkgs } @inputs:
+	let
+		system = "x86_64-linux";
+		lib    = nixpkgs.lib;
+		pkgs   = nixpkgs.legacyPackages.${system};
+		tex = (pkgs.texlive.combine {
+			inherit (pkgs.texlive) scheme-basic
+				amsmath
+				babel
+				capt-of
+				catchfile
+				collection-fontsextra
+				cyrillic
+				dvipng
+				dvisvgm
+				environ
+				etoolbox
+				fancyhdr
+				fontspec
+				geometry
+				hyperref
+				listofitems
+				luacode
+				luatexbase
+				montserrat
+				parskip
+				pgf
+				tcolorbox
+				tocloft
+				ulem
+				wrapfig
+				xcolor;
+
+				#(setq org-latex-compiler "lualatex")
+				#(setq org-preview-latex-default-process 'dvisvgm)
+		});
+	in {
+		devShells.${system} = {
+			default = pkgs.mkShell rec {
+				nativeBuildInputs = with pkgs; [
+					gnumake
+					imagemagick
+					tex
+				];
+				buildInputs = with pkgs; [];
+			};
+		};
+	};
+}