Juvix typecheck runs into an infinite loop

[heueristik]

Description

The juvix typechecker freezes when

• square brackets are removed around a List Nat function argument o
• a Maybe is added to the return type

Systemn

• OS: macOS 14.5 (23F79), MacBook Air M1, 2020
• Juvix version: 0.6.2-371f8f2

To Reproduce

1. Remove the square brackets

   create (self : KeyPair) (tokenLabel : Label) (amount : Nat) (receiver : PublicKey) : Transaction :=
   let
   myself : PublicKey := KeyPair.pubKey self;
   in
   Internal.mkTransaction
     (KeyPair.privKey self)
   ---   [(Internal.mkToken true amount tokenLabel mkData@{owner := myself; previousOwner := myself})]
   +++   (Internal.mkToken true amount tokenLabel mkData@{owner := myself; previousOwner := myself})
     [(Internal.mkToken false amount tokenLabel mkData@{owner := receiver; previousOwner := myself})];

   in https://github.com/anoma/anoma-apps/blob/9cfc2011d0706ddc81f69da38d4ecfd1250df1d8/Token/Token.juvix#L19.

2. Run the typechecker with juvix typecheck Token.juvix.

3. See the terminal not terminating.

   [133 of 134] Compiling /Users/michaelheuer/Projects/Anoma/apps/anoma-apps/Token/Internal.juvix             
   [134 of 134] Compiling /Users/michaelheuer/Projects/Anoma/apps/anoma-apps/Token/Token.juvix

The bug can be reproduced by making the following change to the code https://github.com/anoma/anoma-apps/blob/9cfc2011d0706ddc81f69da38d4ecfd1250df1d8/Token/Token.juvix#L25

--- createKudos (self : KeyPair) (amount : Nat) (receiver : PublicKey) : Transaction :=
+++ createKudos (self : KeyPair) (amount : Nat) (receiver : PublicKey) : Maybe Transaction :=
     create self (mkKudosLabel (KeyPair.pubKey self)) amount receiver;

Expected behavior

The typechecker should throw a type error demanding List Nat instead of Nat as a function argument.

Screenshots