[nixpkgs] rename poppler_utils -> poppler-utils

flake.nix

@@ -19,7 +19,7 @@
       packages = with pkgs; [
         go
         gotools
-        poppler_utils #get first pdf page to png
+        poppler-utils #get first pdf page to png
         cups
         imagemagick
         tailwindcss
@@ -72,7 +72,7 @@
         config = lib.mkIf cfg.enable {
           environment.systemPackages = [ 
             zineshop-pkg
-            pkgs.poppler_utils #get first pdf page to png
+            pkgs.poppler-utils #get first pdf page to png
             pkgs.cups
             pkgs.imagemagick
           ];
@@ -104,7 +104,7 @@
               WorkingDirectory = "/var/lib/zineshop";
               ExecStart = pkgs.writeScript "start-zineshop" ''
                 #! ${pkgs.bash}/bin/bash
-                PATH="$PATH:${lib.makeBinPath [ pkgs.poppler_utils pkgs.cups pkgs.imagemagick ]}"
+                PATH="$PATH:${lib.makeBinPath [ pkgs.poppler-utils pkgs.cups pkgs.imagemagick ]}"
                 ${zineshop-pkg}/bin/zineshop
               '';
               Restart = "on-failure";