[core] restructure to allow PIP packaging

OK - so I have to admit I *hate* the fact that PIP seems to require a
subdirectory named like the library.

But since the PIP package is something really nifty to have (thanks to
@tony again!!!), I updated the codebase to hopefully conform with what
PIP expects. Testruns so far look promising...

bumblebee_status/modules/contrib/dnf.py

@@ -0,0 +1,83 @@
+# pylint: disable=C0111,R0903
+
+"""Displays DNF package update information (<security>/<bugfixes>/<enhancements>/<other>)
+
+Requires the following executable:
+    * dnf
+
+Parameters:
+    * dnf.interval: Time in minutes between two consecutive update checks (defaults to 30 minutes)
+
+"""
+
+import threading
+
+import core.event
+import core.module
+import core.widget
+import core.decorators
+
+import util.cli
+
+
+def get_dnf_info(widget):
+    res = util.cli.execute("dnf updateinfo", ignore_errors=True)
+
+    security = 0
+    bugfixes = 0
+    enhancements = 0
+    other = 0
+    for line in res.split("\n"):
+        if not line.startswith(" "):
+            continue
+        elif "ecurity" in line:
+            for s in line.split():
+                if s.isdigit():
+                    security += int(s)
+        elif "ugfix" in line:
+            for s in line.split():
+                if s.isdigit():
+                    bugfixes += int(s)
+        elif "hancement" in line:
+            for s in line.split():
+                if s.isdigit():
+                    enhancements += int(s)
+        else:
+            for s in line.split():
+                if s.isdigit():
+                    other += int(s)
+
+    widget.set("security", security)
+    widget.set("bugfixes", bugfixes)
+    widget.set("enhancements", enhancements)
+    widget.set("other", other)
+
+    core.event.trigger("update", [widget.module.id], redraw_only=True)
+
+
+class Module(core.module.Module):
+    @core.decorators.every(minutes=30)
+    def __init__(self, config, theme):
+        super().__init__(config, theme, core.widget.Widget(self.updates))
+
+    def updates(self, widget):
+        result = []
+        for t in ["security", "bugfixes", "enhancements", "other"]:
+            result.append(str(widget.get(t, 0)))
+        return "/".join(result)
+
+    def update(self):
+        thread = threading.Thread(target=get_dnf_info, args=(self.widget(),))
+        thread.start()
+
+    def state(self, widget):
+        cnt = 0
+        for t in ["security", "bugfixes", "enhancements", "other"]:
+            cnt += widget.get(t, 0)
+        if cnt == 0:
+            return "good"
+        if cnt > 50 or widget.get("security", 0) > 0:
+            return "critical"
+
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4