linux: use json kernel.org release feeed

Reading the releases from the json feed is much simpler and it allows us
to drop the dependency on feedparser.

bot/linux.py

@@ -2,7 +2,7 @@
 import random
 
 import irc3
-import feedparser
+import requests
 from docopt import Dict
 from irc3.plugins.command import command
 from irc3.utils import IrcString
@@ -19,7 +19,7 @@ OS as defined by POSIX."""
 
 
 class Linux(Plugin):
-    KERNEL_FEED = 'https://www.kernel.org/feeds/kdist.xml'
+    KERNEL_FEED = 'https://www.kernel.org/releases.json'
 
     @irc3.event(r'(?i)^:\S+ PRIVMSG (?P<target>\S+) :(?:.* )?(debian|ubuntu|apt|dpkg|flash)(?: .*|$)')
     def debillian(self, target: str):
@@ -39,21 +39,15 @@ class Linux(Plugin):
 
         %%kernel
         """
-        feed = feedparser.parse(self.KERNEL_FEED)
-
-        # Cancel if no feed or entries
-        if not feed or not feed.get('entries'):
-            self.log.error('Error fetching kernel.org releases feed')
-            return
+        try:
+            res = requests.get(self.KERNEL_FEED, timeout=10).json()
+        except requests.exceptions.RequestException:
+            return '\x02[Kernel]\x02 Error fetching kernel.org releases'
 
         # Make list of releases
         releases = []
-        for e in feed['entries']:
-            version, branch = e['title'].split(': ')
-
-            if '(EOL)' in e['description']:
-                branch = '{}, \x1DEOL\x1D'.format(branch)
-
-            releases.append('\x02{}\x02 ({})'.format(version, branch))
+        for release in res['releases']:
+            releases.append('\x02{}\x02 ({}{})'.format(release['version'], release['moniker'],
+                                                       ', \x1DEOL\x1D' if release['iseol'] else ''))
 
         return '\x02[Kernel]\x02 {}'.format(', '.join(releases))

requirements.txt

@@ -6,6 +6,5 @@ aiocron~=1.3
 psycopg2~=2.8
 requests~=2.22
 GitPython~=3.0
-feedparser~=6.0
 python-dotenv~=0.17.1
 lxml~=4.6