fix flatpak kindlegen detection (7.5.0 regression) (#1000)

* fix flatpak kindlegen detection

* fix shared

kindlecomicconverter/KCC_gui.py

@@ -30,7 +30,7 @@ import sys
 from urllib.parse import unquote
 from time import sleep
 from shutil import move, rmtree
-from subprocess import STDOUT, PIPE
+from subprocess import STDOUT, PIPE, CalledProcessError
 
 import requests
 from xml.sax.saxutils import escape
@@ -945,7 +945,7 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
                         self.addMessage('Your <a href="https://www.amazon.com/b?node=23496309011">KindleGen</a>'
                                         ' is outdated! MOBI conversion might fail.', 'warning')
                     break
-        except FileNotFoundError:
+        except (FileNotFoundError, CalledProcessError):
             self.kindleGen = False
             if startup:
                 self.display_kindlegen_missing()

kindlecomicconverter/comic2ebook.py

@@ -1238,7 +1238,7 @@ def checkTools(source):
     if options.format == 'MOBI':
         try:
             subprocess_run(['kindlegen', '-locale', 'en'], stdout=PIPE, stderr=STDOUT, check=True)
-        except FileNotFoundError:
+        except (FileNotFoundError, CalledProcessError):
             print('ERROR: KindleGen is missing!')
             sys.exit(1)
 

kindlecomicconverter/shared.py

@@ -20,7 +20,6 @@
 
 from functools import lru_cache
 import os
-from hashlib import md5
 from html.parser import HTMLParser
 import subprocess
 from packaging.version import Version
@@ -140,7 +139,7 @@ def available_archive_tools():
         try:
             subprocess_run([tool], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
             available.append(tool)
-        except FileNotFoundError:
+        except (FileNotFoundError, subprocess.CalledProcessError):
             pass
     
     return available