calibre-web: 0.6.12 -> 0.6.13

calibre-web no longer starts without proper calibre DB path configured,
so the default testcase (completely unconfigured) is removed.

nixos/tests/calibre-web.nix

@@ -11,10 +11,6 @@ import ./make-test-python.nix (
         meta.maintainers = with pkgs.lib.maintainers; [ pborzenkov ];
 
         nodes = {
-          default = { ... }: {
-            services.calibre-web.enable = true;
-          };
-
           customized = { pkgs, ... }: {
             services.calibre-web = {
               enable = true;
@@ -33,12 +29,6 @@ import ./make-test-python.nix (
         testScript = ''
           start_all()
 
-          default.wait_for_unit("calibre-web.service")
-          default.wait_for_open_port(${toString defaultPort})
-          default.succeed(
-              "curl --fail 'http://localhost:${toString defaultPort}/basicconfig' | grep 'Basic Configuration'"
-          )
-
           customized.succeed(
               "mkdir /tmp/books && calibredb --library-path /tmp/books add -e --title test-book"
           )

pkgs/servers/calibre-web/default.nix

@@ -7,13 +7,13 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "calibre-web";
-  version = "0.6.12";
+  version = "0.6.13";
 
   src = fetchFromGitHub {
     owner = "janeczku";
     repo = "calibre-web";
     rev = version;
-    sha256 = "sha256-IgS281qDxG302UznC63nZH8/ty4fgFtn+lLYdakGA4w=";
+    sha256 = "sha256-zU7ujvFPi4UaaEglIK3YX3TJxBME35NEKKblnJRt0tM=";
   };
 
   prePatch = ''
@@ -52,6 +52,7 @@ python3.pkgs.buildPythonApplication rec {
     flask_login
     flask_principal
     iso-639
+    lxml
     pypdf3
     requests
     sqlalchemy