feat: add poppler-utils (pdftotext) to nix flake

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

flake.nix

@@ -21,6 +21,17 @@
 
         marker = import ./nix/marker.nix { inherit pkgs; };
 
+        # Pre-download the font marker needs so it doesn't try to write
+        # into the read-only nix store at runtime.
+        marker-font = pkgs.fetchurl {
+          url = "https://models.datalab.to/artifacts/GoNotoCurrent-Regular.ttf";
+          hash = "sha256-iCr7q5ZWCMLSvGJ/2AFrliqlpr4tNY+d4kp7WWfFYy4=";
+        };
+        marker-font-dir = pkgs.runCommand "marker-font-dir" {} ''
+          mkdir -p $out
+          ln -s ${marker-font} $out/GoNotoCurrent-Regular.ttf
+        '';
+
         paper = pkgs.rustPlatform.buildRustPackage {
           pname = "paper";
           version = "0.1.0";
@@ -35,7 +46,9 @@
           nativeBuildInputs = [ pkgs.makeWrapper ];
           postBuild = ''
             wrapProgram $out/bin/paper \
-              --prefix PATH : ${pkgs.lib.makeBinPath [ marker.markerEnv ]}
+              --prefix PATH : ${pkgs.lib.makeBinPath [ marker.markerEnv pkgs.poppler-utils ]} \
+              --set FONT_DIR "${marker-font-dir}" \
+              --set FONT_PATH "${marker-font-dir}/GoNotoCurrent-Regular.ttf"
           '';
         };
       in
@@ -49,6 +62,7 @@
           buildInputs = [
             rust-nightly
             marker.markerEnv
+            pkgs.poppler-utils
           ];
         };
       });