Bug in Diamond Kata?

Programming Uiua
1

When testing my solution, the tester for this exercise emits the following message:

Error: Module `diamond.ua` is experimental. To use it, add `# Experimental!` to the top of this file.
  at /mnt/exercism-iteration/tests.ua:1:3
1 | ~ "diamond.ua" ~ Diamond

I suppose diamond.ua uses an unstable function and therefore requires the “Experimental!” flag.

To replicate, here’s my attempt:

# Experimental!
# Output the diamond shape for a given letter

Index   ← +1⨂"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
Quad    ← ⍜⊜∘≡⋅@ ⊸⦷ "@" ⍜(+1)(+@A×)⟜⊞=⊃(⇡|⇡)
Draw ← ⊙◌˜⊂⇌⊸↘¯1≡⊂⊸(⧋⇌⧋↘1)⟜(⇌↘¯1)

# Rows ? Letter
Diamond ← |1 Draw Quad Index

(I had to mark it as Experimental because I use evert, which was only stabilised in v0.18).

Does anybody have a working solution that tests fine?

Cheers.

Edit: no, that doesn’t make sense. It’ll be because I marked it Experimental, which presumably requires the module to be marked as Experimental when imported into tests.ua.

Solutions are (a) I rewrite my attempt (which passes tests, yay) to not use Experimental functions, or (b) somebody updates to v0.18 which stabilised the evert function I use.

2

The test runner uses Uiua 0.17.2. It looks like Uiua 0.18 came out three weeks ago so depending on the volunteer track maintainer’s availability, a track upgrade might not be on their radar yet. It would be helpful to know if there are other changes in 0.18 that might make existing exercises easier for students.

3

You can now use anything from 18.1 on exercism test runners.