botamusique: Backport fix for invalid version handling

pkgs/tools/audio/botamusique/catch-invalid-versions.patch

@@ -0,0 +1,24 @@
+diff --git a/mumbleBot.py b/mumbleBot.py
+index 11bc480..7395f41 100644
+--- a/mumbleBot.py
++++ b/mumbleBot.py
+@@ -188,11 +188,14 @@ class MumbleBot:
+             th.start()
+ 
+         last_startup_version = var.db.get("bot", "version", fallback=None)
+-        if not last_startup_version or version.parse(last_startup_version) < version.parse(self.version):
+-            var.db.set("bot", "version", self.version)
+-            if var.config.getboolean("bot", "auto_check_update"):
+-                changelog = util.fetch_changelog()
+-                self.send_channel_msg(tr("update_successful", version=self.version, changelog=changelog))
++        try:
++            if not last_startup_version or version.parse(last_startup_version) < version.parse(self.version):
++                var.db.set("bot", "version", self.version)
++                if var.config.getboolean("bot", "auto_check_update"):
++                    changelog = util.fetch_changelog()
++                    self.send_channel_msg(tr("update_successful", version=self.version, changelog=changelog))
++        except version.InvalidVersion:
++            pass
+ 
+     # Set the CTRL+C shortcut
+     def ctrl_caught(self, signal, frame):

pkgs/tools/audio/botamusique/default.nix

@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 , python3Packages
 , ffmpeg
 , makeWrapper
@@ -53,6 +54,11 @@ stdenv.mkDerivation rec {
     # We can't update the package at runtime with NixOS, so this patch makes
     # the !update command mention that
     ./no-runtime-update.patch
+
+    # Fix passing of invalid "git" version into version.parse, which results
+    # in an InvalidVersion exception. The upstream fix is insufficient, so
+    # we carry the correct patch downstream for now.
+    ./catch-invalid-versions.patch
   ];
 
   postPatch = ''