Unable to install on MacOS

[tbrowder]

Trying to install on MacOS

missy:Font-Utils tbrowde$  zef install PDF::API6
===> Searching for: PDF::API6
===> Staging PDF::API6:ver<0.2.8>:auth<zef:dwarring>
===> Staging [OK] for PDF::API6:ver<0.2.8>:auth<zef:dwarring>
===> Testing: PDF::API6:ver<0.2.8>:auth<zef:dwarring>
[PDF::API6] ===SORRY!===
[PDF::API6] Failed to determine cwd: too many open files
===> Testing [FAIL]: PDF::API6:ver<0.2.8>:auth<zef:dwarring>
Aborting due to test failure: PDF::API6:ver<0.2.8>:auth<zef:dwarring> (use --force-test to override)

Mac version: 14.5
Raku version: 2024.12

[ajbuch2000]

Mac version: 15.2
Raku version 2024.12 has the same problem with PDF::API6:ver<0.2.7>.
Raku 2023.12 works fine with both 0.2.7 and 0.2.8.

[dwarring]

I can trigger similar on Linux, ok with ulimit -Sn 512 -Hn 512. but happens at 256, with the following:

$ ulimit -Sn 256 -Hn 256; rm -r .precomp
$ raku -v; prove6 -I .
Welcome to Rakudo™ v2025.06.1.
Implementing the Raku® Programming Language v6.d.
Built on MoarVM version 2025.06.
===SORRY!=== Error while compiling /home/david/git/PDF-API6/t/00-basic.t
Earlier failure:
 Failed to open file /home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/site/precomp/532EC2301E6B5D7FCCF177CE8D775D58B9FD00CC/B3/B3651C5A9826B3CFC20CF37CF5FDDC4C75075E21: Too many open files
  in any statement_control at /home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Grammar.moarvm line 1

Final error:
 Type check failed in binding; expected IO::Handle but got Failure (Failure.new(exceptio...)
at /home/david/git/PDF-API6/t/00-basic.t:4
...

Rakudo precomp seems to be hogging file descripts, by keeping them open, does it need to?

[dwarring]

With --ll-exception:

$ raku -v; raku -I . --ll-exception t/00-basic.t 
Welcome to Rakudo™ v2025.06.1.
Implementing the Raku® Programming Language v6.d.
Built on MoarVM version 2025.06.
Earlier failure:
 Failed to open file /home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/site/precomp/532EC2301E6B5D7FCCF177CE8D775D58B9FD00CC/79/796A6797A2A81D1406FBB69438FAD6AB08E5F777: Too many open files
  in any statement_control at /home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Grammar.moarvm line 1

Final error:
 Type check failed in binding; expected IO::Handle but got Failure (Failure.new(exceptio...)
   at SETTING::src/core.c/Exception.rakumod:65  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:throw)
 from src/Perl6/Metamodel/Configuration.nqp:72  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Metamodel.moarvm:throw_or_die)
 from src/vm/moar/dispatchers.nqp:834  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/BOOTSTRAP/v6c.moarvm:bind-error)
 from src/vm/moar/dispatchers.nqp:872  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/BOOTSTRAP/v6c.moarvm:)
 from SETTING::src/core.c/CompUnit/PrecompilationUnit/File.rakumod:32  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:)
 from SETTING::src/core.c/Lock.rakumod:30  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:protect)
 from SETTING::src/core.c/CompUnit/PrecompilationUnit/File.rakumod:30  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:read-dependencies)
 from SETTING::src/core.c/CompUnit/PrecompilationUnit.rakumod:38  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:is-up-to-date)
 from SETTING::src/core.c/CompUnit/PrecompilationRepository.rakumod:207  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:)
 from SETTING::src/core.c/CompUnit/PrecompilationRepository.rakumod:178  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:load-dependencies)
 from SETTING::src/core.c/CompUnit/PrecompilationRepository.rakumod:284  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:)
 from SETTING::src/core.c/CompUnit/PrecompilationRepository.rakumod:283  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:load)
 from SETTING::src/core.c/CompUnit/PrecompilationRepository.rakumod:61  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:try-load)
 from SETTING::src/core.c/CompUnit/Repository/FileSystem.rakumod:116  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:)
 from SETTING::src/core.c/CompUnit/Repository/FileSystem.rakumod:110  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/CORE.c.setting.moarvm:need)
 from src/Perl6/World.nqp:1474  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/World.moarvm:load_module)
 from src/Perl6/World.nqp:1412  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/World.moarvm:do_pragma_or_load_module)
 from src/Perl6/Grammar.nqp:1322  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Grammar.moarvm:statement_control:sym<use>)
 from NQP::src/QRegex/Cursor.nqp:757  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Grammar.moarvm:statement_control)
 from src/Perl6/Grammar.nqp:967  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Grammar.moarvm:statement)
 from src/Perl6/Grammar.nqp:895  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Grammar.moarvm:statementlist)
 from NQP::src/HLL/Grammar.nqp:654  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:LANG)
 from src/Perl6/Grammar.nqp:1345  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Grammar.moarvm:FOREIGN_LANG)
 from src/Perl6/Grammar.nqp:843  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Grammar.moarvm:comp_unit)
 from src/Perl6/Grammar.nqp:557  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Grammar.moarvm:TOP)
 from NQP::src/QRegex/Cursor.nqp:1507  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/QRegex.moarvm:parse)
 from NQP::src/HLL/Compiler.nqp:532  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:parse)
 from NQP::src/HLL/Compiler.nqp:447  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:execute_stage)
 from NQP::src/HLL/Compiler.nqp:483  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:run)
 from NQP::src/HLL/Compiler.nqp:486  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:)
 from NQP::src/HLL/Compiler.nqp:478  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:compile)
 from NQP::src/HLL/Compiler.nqp:167  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:eval)
 from NQP::src/HLL/Compiler.nqp:423  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:evalfiles)
 from NQP::src/HLL/Compiler.nqp:346  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:command_eval)
 from src/Perl6/Compiler.nqp:234  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/lib/Perl6/Compiler.moarvm:command_eval)
 from NQP::src/HLL/Compiler.nqp:269  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/nqp/lib/NQPHLL.moarvm:command_line)
 from src/main.nqp:83  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/perl6.moarvm:MAIN)
 from src/main.nqp:65  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/perl6.moarvm:<mainline>)
 from <unknown>:1  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/perl6.moarvm:<main>)
 from <unknown>:1  (/home/david/.rakubrew/versions/moar-2025.06.1/install/share/perl6/runtime/perl6.moarvm:<entry>)