Unless things have changed recently, currently you need to provide an executable, just providing a .love is not enough.
You can make a Love2D executable by concatenating the love executable and the .love file like:
cat love myGame.love > myGame
You'll also need to provide the .so shared object files that Love2D needs (I can't remember what the command is, nor the complete list of .so files to include, but the end result should look like:
path/to/myGame/
myGame
openAL.so
luajit.so
sdl.so
(Again, I'm not sure what the .so files are, but that's the gist of it...)