Try with modified deno2nix flake

flake.lock

@@ -8,17 +8,17 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1670990547,
-        "narHash": "sha256-XlHaXfeqEWRKMTk+OI20Ku3Fb2pUET5gXwOxLOlVQ+U=",
-        "owner": "SnO2WMaN",
-        "repo": "deno2nix",
-        "rev": "15b4c19f42db3f91175f93a2982e294b5895332e",
-        "type": "github"
+        "lastModified": 1675869640,
+        "narHash": "sha256-HkSiT3VWfHaAUa/usB6+ywXKejZI7bh6yIoh2bTa0eE=",
+        "ref": "refs/heads/main",
+        "rev": "0b54d6ce4424039951c1c12cc4319836b76c1eaf",
+        "revCount": 32,
+        "type": "git",
+        "url": "https://git.pub.solar/b12f/deno2.nix.git"
       },
       "original": {
-        "owner": "SnO2WMaN",
-        "repo": "deno2nix",
-        "type": "github"
+        "type": "git",
+        "url": "https://git.pub.solar/b12f/deno2.nix.git"
       }
     },
     "devshell": {

flake.nix

@@ -4,21 +4,21 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
 
-    deno2nix.url = "github:SnO2WMaN/deno2nix";
-
     flake-utils.url = "github:numtide/flake-utils";
 
     devshell.url = "github:numtide/devshell";
     devshell.inputs.flake-utils.follows = "flake-utils";
     devshell.inputs.nixpkgs.follows = "nixpkgs";
+
+    deno2nix.url = "git+https://git.pub.solar/b12f/deno2.nix.git";
   };
 
   outputs = {
     self,
-    deno2nix,
+    nixpkgs,
     flake-utils,
     devshell,
-    nixpkgs,
+    deno2nix,
   }:
     flake-utils.lib.simpleFlake {
       inherit self nixpkgs;

overlay.nix

@@ -12,6 +12,11 @@ final: prev:
       lockfile = "./deno.lock";
       config = "./deno.json";
 
+      buildInputs = [
+        sane-backends
+        python39Packages.img2pdf
+      ];
+
       allow = {
         "write" = true;
         "env" = true;