Taskfile loading doesn't work

[natnat-mc]

(error messages here are for 5.3, but they also apply to 5.1)

First, taskfiles are loaded in test.alfons.<name> instead of alfons.tasks.<name>:

Alfons 4.2
Using Alfons.moon (moon)
/usr/bin/lua5.3: /usr/local/lib/luarocks/rocks-5.3/alfons/4.2-1/bin/alfons:363: test.alfons.moonbuild not found.
stack traceback:
	[C]: in function 'error'
	/usr/local/lib/luarocks/rocks-5.3/alfons/4.2-1/bin/alfons:363: in global 'load'
	[string "Alfons"]:4: in function <[string "Alfons"]:3>
	(...tail calls...)
	/usr/local/lib/luarocks/rocks-5.3/alfons/4.2-1/bin/alfons:1018: in main chunk
	[C]: in ?

Then, taskfile loading fails if the first line of the taskfile is a shebang (which is still supposed to be valid lua (loadfile accepts it but not Alfons)):

Alfons 4.2
Using Alfons.moon (moon)
/usr/bin/lua5.3: /usr/local/lib/luarocks/rocks-5.3/alfons/4.2-1/bin/alfons:363: Could not load Taskfile 1: Could not load Alfonsfile content (5.2+): [string "Alfons"]:1: unexpected symbol near '#'
stack traceback:
	[C]: in function 'error'
	/usr/local/lib/luarocks/rocks-5.3/alfons/4.2-1/bin/alfons:363: in global 'load'
	[string "Alfons"]:4: in function <[string "Alfons"]:3>
	(...tail calls...)
	/usr/local/lib/luarocks/rocks-5.3/alfons/4.2-1/bin/alfons:1018: in main chunk
	[C]: in ?

Then again, Alfons complains about missing globals for loading the file (package, _G (which should be set to the environment itself, probably along with _ENV for 5.3 compat), rawset, setmetatable), and then about subalf being a table and not a function:

Alfons 4.2
Using Alfons.moon (moon)
/usr/bin/lua5.3: [string "Alfons"]:5: attempt to index a nil value (global 'package')
stack traceback:
        [string "Alfons"]:5: in upvalue 'alf'
        /usr/local/share/lua/5.3/alfons/init.lua:133: in local 'subalf'
        /usr/local/share/lua/5.3/alfons/init.lua:158: in global 'load'
        [string "Alfons"]:4: in function <[string "Alfons"]:3>
        (...tail calls...)
        /usr/local/lib/luarocks/rocks-5.3/alfons/test-3/bin/alfons:93: in main chunk
        [C]: in ?

The taskfile itself is https://push.codinget.me/moonbuild.lua and the Alfons.moon is https://push.codinget.me/Alfons.moon