fix: correctly display revision in document

flake.nix

@@ -13,10 +13,10 @@
     };
   };
 
-  outputs = inputs@{ flake-parts, ... }:
+  outputs = inputs @ { self, flake-parts, ... }:
     flake-parts.lib.mkFlake { inherit inputs; } {
       imports = [
-        ./nix/flake-module.nix
+        ((import ./nix/flake-module.nix) self)
         inputs.treefmt-nix.flakeModule
       ];
       systems = [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin" ];

nix/flake-module.nix

-{ lib, flake-parts-lib, ... }:
+self: { lib, flake-parts-lib, ... }:
 let
   inherit (flake-parts-lib) mkPerSystemOption;
   inherit (lib) types mkOption;
@@ -42,7 +42,7 @@ in
           mainFile = config.document.mainFile;
           buildCommand = lib.getExe (pkgs.writeShellScriptBin "build-document" ''
             BUILDDATE="$(TZ='Europe/Budapest' LC_TIME='hu_HU.UTF-8' date +'%Y. %b. %d. %T')"
-            BUILDCOMMIT="$(git rev-parse --short HEAD || echo '${ if (self' ? rev) then self'.rev else "<ismeretlen>"}')"
+            BUILDCOMMIT="$(git rev-parse --short HEAD || echo '${ if (self ? shortRev) then self.shortRev else "<ismeretlen>"}')"
             VARS="\\def\\builddate{$BUILDDATE} \\def\\buildcommit{$BUILDCOMMIT}"
             latexmk -interaction=nonstopmode -pdf -lualatex \
               -outdir="./build" -synctex=1 \