Problem with zef obtaining IO::String

zef-IO_String.txt

I'm upgrading my Rakudo from moar-2023.02 to
moar-2024.04. I'm having problems obtaining the
IO::String distribution. raku.land proposes:

    P6C: IO::String:ver<0.1.1>
    ZEF: IO::String:ver<0.2.0>:auth<zef:jjmerelo>

Now, in a shell having moar-2024.04 active, please
observe:

    ▸ zef --dry install 'IO::String:ver<0.1.1>'
    ===> Searching for: IO::String:ver<0.1.1>
    ===> Staging IO::String:ver<0.1.1>
    ===> Staging [OK] for IO::String:ver<0.1.1>
    ===> Testing: IO::String:ver<0.1.1>
    ===> Testing [OK] for IO::String:ver<0.1.1>

    ▸ zef --dry install 'IO::String:ver<0.2.0>'
    ===> Searching for: IO::String:ver<0.2.0>
    ===> Staging IO::String:ver<0.2.0>:auth<zef:jjmerelo>
    ===> Staging [OK] for IO::String:ver<0.2.0>:auth<zef:jjmerelo>
    ===> Testing: IO::String:ver<0.2.0>:auth<zef:jjmerelo>
    ===> Testing [OK] for IO::String:ver<0.2.0>:auth<zef:jjmerelo>

So both of those are good. But:

    ▸ zef --dry install 'IO::String'
    ===> Searching for: IO::String
    ===> Staging Text::CSV:ver<0.015>:auth<zef:Tux>
    ===> Staging [OK] for Text::CSV:ver<0.015>:auth<zef:Tux>
    ===> Testing: Text::CSV:ver<0.015>:auth<zef:Tux>
    ===> Testing [FAIL]: Text::CSV:ver<0.015>:auth<zef:Tux>
    Aborting due to test failure: Text::CSV:ver<0.015>:auth<zef:Tux> (use --force-test to override)
 
Yet:

    ▸ zef --dry install 'Text::CSV'
    ===> Searching for: Text::CSV
    ===> Staging Text::CSV:ver<0.022>:auth<zef:Tux>
    ===> Staging [OK] for Text::CSV:ver<0.022>:auth<zef:Tux>
    ===> Testing: Text::CSV:ver<0.022>:auth<zef:Tux>
    ===> Testing [OK] for Text::CSV:ver<0.022>:auth<zef:Tux>

I believe that in the past (versions 0.015 and
preceding) Text::CSV supplied an IO::String and that
somehow confuses things. Note that since version 0.016
(was fixed in commit 348a68c) it supplies a
Text::IO::String instead and does not use IO::String
anymore.

So I know that simply installing ver<0.2.0> solves my
problem, but I figured I should mention it so zef's
understanding could be fixed somehow.