--- hplip-1.7.2/base/utils.py.ui-optional	2007-02-07 19:21:31.000000000 +0000
+++ hplip-1.7.2/base/utils.py	2007-06-11 14:29:16.000000000 +0100
@@ -644,6 +644,13 @@
         log.error("PyQt not installed. GUI not available. Exiting.")
         return False
 
+    # hplip-gui sub-package (Fedora)
+    try:
+        import ui
+    except ImportError:
+        log.error("hplip-gui not installed.  GUI not available. Exiting.")
+        return False
+
     # check version of Qt
     qtMajor = int(qt.qVersion().split('.')[0])
 
--- hplip-2.7.10/unload.py.orig	2007-11-16 14:18:34.263284703 +0100
+++ hplip-2.7.10/unload.py	2007-11-16 14:20:46.243150346 +0100
@@ -702,17 +702,16 @@
 
 if mode == GUI_MODE:
     if not prop.gui_build:
-        log.error("GUI mode disabled in build. Exiting.")
-        sys.exit(1)
+        log.warn("GUI mode disabled in build. Reverting to non-interactive mode.")
+        mode = NON_INTERACTIVE_MODE
         
     elif not os.getenv('DISPLAY'):
-        log.error("No display found. Exiting.")
-        sys.exit(1)
+        log.warn("No display found. Reverting to non-interactive mode.")
+        mode = NON_INTERACTIVE_MODE
     
     elif not utils.checkPyQtImport():
-        log.error("PyQt init failed. Exiting.")
-        sys.exit(1)
-
+        log.warn("PyQt init failed. Reverting to non-interactive mode.")
+        mode = NON_INTERACTIVE_MODE
 
 if mode == GUI_MODE:
     if not os.getenv('DISPLAY'):
--- hplip-2.7.10/makecopies.py.orig	2007-11-16 14:21:42.234608500 +0100
+++ hplip-2.7.10/makecopies.py	2007-11-16 14:22:44.225151454 +0100
@@ -391,8 +391,9 @@
     log.debug("reduction = %d" % reduction)
     log.debug("quality = %d" % quality)
     log.debug("fit_to_page = %d" % fit_to_page)
-    log.debug("max_reduction = %d" % max_reduction)
-    log.debug("max_enlargement = %d" % max_enlargement)
+# it fails if max_reduction is undefined
+#    log.debug("max_reduction = %d" % max_reduction)
+#    log.debug("max_enlargement = %d" % max_enlargement)
     log.debug("scan_style = %d" % scan_style)
 
     update_queue = Queue.Queue()