Things accomplished at the hackathon

Aaron Crane (‎arc‎)

  • Perl 5 Configure:
    • Learned from Tux how to manage changes to Perl 5's Configure script, its metaconfig units, and porting changes both up- and downstream
    • Wrote and port several Configure changes to metaconfig units
    • And we synchronised the Configure script in 5.24.0-to-be with metaconfig!
  • Dealt with some Perl 5-related tickets: perl#127232, cpan#100183
  • Worked on new non-blessed-reference functions for Ref::Util
  • Code archaeology for Perl 5 SvRXOK macro, ready for backporting to Devel::PPPort
  • Helped jberger with a __SUB__ polyfill for older Perls, beyond what Sub::Current manages
  • Investigated how to let Devel::Cover see code outside subroutines in a required module (though not yet successfully)
  • Blogged!

Abe Timmerman (‎abeltje‎)

  • Released and deployed changes to the SmokeReportsWebsites. Better filtering system.
  • Released the new version Test::Smoke (1.70)
  • Started work on an idea to show changes in test status during the development process. (This is quite hard, given the current data model)


  • Fixed the registrations for the CPAN Testers Wiki. Not sure how long this was broken, but thanks to Oriol Soriano Vila (‎Uree‎) for alerting me.
  • CPAN Testers Reports is now running on Fastly (, allowing us to caching some of the pages, and reduce the load on the webserver when trying to recreate reasonably static pages. Also means the routing for anyone viewing the site outside of Europe is going to reduce page load times too. Thanks to Leo Lapworth (‎Ranguard‎) for showing me the ropes.
  • Fixed some bugs in the Reports Mailer, refreshed the tests and test data, and tidied up the notifications.
  • Fixed the individual sending of reports via Reports Mailer, as this has been failing for some time. Due to the fact that we switch the DB storage to use Sereal, but didn't update the daily script to deserialize correctly before sending the individual reports. Note this had no effect on the summary reports.
  • For a long running bug with the Summary panel, which turns out has also been affecting MetaCPAN. After the server crash last year, turns out the base db schema was missing a change to one of the tables (part of the summary chain) and wasn't getting updated. Currently rebuilding, so expect to have the summaries and release data feeds all working again soon.
  • Continued to hand over the final keys to Doug Bell (PREACTION), who is now carrying the torch for CPAN Testers. I feel immensely confident that I have left the keys in capable hands, and with the ideas Doug has already shown me, I expect bigger and better things for CPAN Testers' future. Please look after him :)
  • Fixed a few bugs in other distributions, a couple related to CPAN Testers.
  • Cleaned up some of the CPAN Testers family website templates.
  • In the coming weeks, will be collating all the website tests I run prior to updating the CPAN Testers family websites, and handing over to Doug for his new development environment for CPAN Testers. This will hopefully enable easier access to anyone wanting to help fix problems on the websites and backends in the future.
  • Joined discussions for The Perl River, the (re)naming of the QAH and the future of CPAN Testers.

H.Merijn Brand (‎Tux‎)

  • Backported all open issues from perl5 blead to metaconfig, taking Aaron by the hand explaining all the steps and possible issues that can arise.
  • Merged all Configure changes into a new generated set for perl5 and merged that back so Ricardo Signes (‎rjbs‎) could merge that into 5.24.0-RC2 :) \o/
  • Tested the most recent Test::Smoke after discussions with Abe Timmerman (‎abeltje‎) on the just installed 5.24.0-RC2. The report was fine and entered the database which showed fine on the new website for smoke results
  • Started merging units from dist/git to dist/U so changes to U/modified can be identified easier
  • Removed U/modified units that have no change anymore compared to dist/git (after upstream merged suggested changes), to ease maint
  • Updated a few U/modified units based on improvements in dist/git (166 units to go)
  • Updated the documentation for metaconfig with all findings from doing the process on a Mac.
  • Attended the discussion about the river quality of CPAN and granted co-maint to several people to Release::Checklist
  • Attended the discussion about the implications of merging Test2 into perl5 core.
  • Installed most recent Test2 on laptop and tested that against all my modules
  • Fixed an issue in DBD::CSV that was actually in SQL::Statement and DBI::SQL::Nano (patches applied to both)
  • Installed the newest DBI/devel on my laptop and tested that against all installed databases (Pg, SQLite, mysql, CSV) and with an interface layer (Tie::Hash::DBD)
  • Sat with Tadeusz Sośnierz (‎tadzik‎) to get rakudo build bleading edge perl6 (moar & nqp) so my timings make more sense
  • Sat with user:lizmat to optimize Text::CSV for perl6 and then fixed a problem with aliasing multi-methods (ticket filed)
  • Discussed a problem in Pod::Simple with Neil Bowers (‎NEILB‎) and BinGOs
  • Released a new version of Spreadsheet::Read after analyzing Slaven's test failures
  • Tested most recen version of Devel::Cover on NetBSD for Paul Johnson (‎pjcj‎)
  • Split off System::Info from Test::Smoke for use in CPANTESTERS reporters. It's on github now
  • Digging into Darwin failures for Test::Smoke
  • Testing 5.24.0-RC2 on HP-UX after a failure report from jhi. WFM
  • Install Test::Smoke (from master) on all my smoke boxes

bulk 88


  • 2 patches were written to deal with perls with XSConfig installed, where there is no easy way to modify the faux-read-only %Config hash unlike with PP Config. Disclaimer, I'm the maintainer of XSConfig. cperl just forks T::H to make it pass with XSConfig, but that isn't abstracted correctly. The first patch which used the CPAN Mock::Config module was decided to be unacceptable after discussion with leont since it added an upstream dep to T::H, and T::H has a no deps other than core policy, since its a core bundled module by p5p. The second patch created a global package var which stored the info needed and could be runtime changed/mocked for testing, instead of needing to runtime change the RO %Config hash.
  • A heisenbug in proverun.t took most of Thursday to diagnose. After adding my WIP async code, proverun.t always failed under T::H when doing a "make test" yet never failed when running it alone in console. Stepping, print debugging, or adding sleeps also made it go away. You wouldn't think it, since normally the test harness/tap parser's module stack consists of installed modules, not possibly buggy non-CPAN or CPAN uninstalled modules, but when you do a "make test" on T::H, the uninstalled T::H is the harness that tests the uninstalled T::H. So instead of the "server" being stable version of the framework, and the "client" being the unstable version, both are the unstable version. This makes you wonder where is the bug. The bug was eventually discovered to be a override sub ref being assigned to a glob in a child class, and the glob/sub in that child class never existed, instead the meth was inherited from a base class but the dev made a mistake in thinking it was implemented in the child class when it wasn't. The dev even ironically commented in the source code on the side effects of the heisenbug and didn't know why it was happened from when he wrote the code, but in practice the bug wasn't seen in real life, so the comment was wrong, until I replaced the IO layer and the symptoms that dev described in the comment happen in practice. Because the STDOUT of proverun.t can be interrogated with perl's -t operator, and T::H did class selection based on the result of -t operator, the override sub was never called under the async IO layer, but was called when run under console. The override method was supposed to suppress T::H in a .t from writing to STDOUT. STDOUT should not be getting written to by T::H in the .t, since the .t was Test::More testing Test::Harness inside the same proc, and Test::Harness was corrupting the TAP stream by writing to STDOUT and causing corruption that Test::Harness in a outer proc (the make test proc) was reading in and thus failing. make_tool->seperate_proc->test::harness for real->seperate_proc->.t->test::more->test::harness was the app stack for proverun.t.
  • In some places inside T::H, perl exceptions from other parts of T::H are trapped and stored in objects, but some/most/many .t'es in T::H's test suite, never fetch the error/exception data from objects, ever. So serious errors (dies that I added during development) that should break the T::H .ts were being swallowed without a trace by the .t. This couldn't be found without extensive single stepping of T::H's code and made adding die()s seemingly never execute. I didn't suspect exception swallowing, until I as an experiment did a unpack('P1', "\x01\x00\x00\x00") to force the perl proc to SEGV instead of die() since I started to not trust the die()s I wrote. When I discovered the SEGV executed, but the die() in the next statement right below didn't seem to execute, I knew exceptions were being blindly swallowed and to start single stepping.
  • Since speed is the only thing I care about, in discussion of replacing Test::Builder, since I never use anything fancier than Test::More, I benchmarked Test2::Bundle::More vs legacy Test::More. Found Test2::Bundle::More 45% faster than Test::More in execution time of sub ok(). Reported findings to Exodist. Told him my positive feelings and did not participate in any other Test2 discussion that day, or on retrospect, ever again during QAH since I dont have much skin in T::B vs T2 debate.
  • Met Mithaldu offline for first time ever. A fellow Win32 Perl user I've known for a long time online.


  • Tap::Parser::Iterator::Process was split into a Unix (really generic/any OS) and Windows class. Design complexity was that multiple CPAN modules do Tap::Parser::Iterator::Process->new() and the implementation of a T::H process had to goto the correct implementation. For stability reasons and because the actual async IO on Win32 subs are a separate XS module on CPAN, the Unix process class continues to work on Win32 in serial testing mode, just like it was before my code. T::H has its own object class called TAP::Object and it was never designed for runtime dynamic class selection where a creating a base class instance actually creates a obj of a derived type, not the type requested. Infinite recursion and perl stack exhaustion happened on the first try as *Tap::Parser::Iterator::Process->new(Tap::Parser::Iterator::Process->new(Tap::Parser::Iterator::Process->new()))* happened. Since T::H has its own object system, that uses "_initialize" methods instead of perl standard "new" methods, the 2nd try called an empty stub/default "_initialize" in TAP::Object instead of the intended Tap::Parser::Iterator::Process::* namespace "_initialize". The prototype of _initialize does not allow changing the classname unlike perl standard new methods. Use of a stepping debugger proved essential to writing this code/patch. Also T::H extensively uses closures and anon subs and sub factories to implement C++ private object members in Perl, which is unperl-like and this had to be reversed and minimized in some places.
  • A Win32 IO Completion Port implementation of Tap::Parser::Iterator::Process was added. Difficulties included that "reads" must be reattempted, if no newline was found in the data that was returned by an async read, and since Windows IO Completion are a FIFO queue in which a read packet for ANY .t proc can be returned in a unpredictable order, yet a Tap::Parser::Iterator::Process->next() (really a read/fetch/get method) must return a line on a specific fixed .t proc, a system had to be invented to emulate sync blocking IO from 1 proc ontop of a queue where IO was poped from ANY proc. The emulation was done by a while loop that runs until 1 read or 1 line of TAP is available from the specific .t proc, and reads and lines of TAP from other .t procs are parsed and queued in the Iterator objects for those other .t procs. Eventually a ->next() will be called on those other Iterator objects which will non-blocking drain the parsed TAP lines. Although this design can cause the parsed TAP line buffers to grow very large and grow unequally nothing can really be done about when round robin queue must be emulated ontop of a queue where the largest TAP emitter .t proc gets the largest amount of timeslices. Remember that .t files all emit a different TAP tests per second than other .t files due to inherent underlying work, and OS thread scheduler, and number of CPU cores differences. Round robin is a bad idea for .t files, since .t files that are sleeping should get 0 time slices from T::H, but without a working IO::Select requires that round robin (iterating a perl array from index 0 going up) work.
  • The first implementation of introducing a new IO layer, specific for Win32 (or any OS) into T::H had the random proc queue, but since only 1 child proc .t was ever started by T::H for the majority of T::H's test suite, no sorting of read events into respectic procs needed to be done, since there was only 1 running child proc at a time. A PP assert made sure the opaque perl ref sent through the async queue and poped off the queue when the read event is delivered was identical to $self. The assert compared the PID stored in the opaque obj and self obj (both are of type Tap::Parser::Iterator::Process). The assert 1 out of 10 runs failed in multiplexer t since by chance the order of the events coming off the queue when there were 3 procs running happened to be in the order the 3 procs were originally launches by multiplexer.t. Increasing the amount of child procs from 3 to 6 made the events be almost always 10 out of 10 times, interleaves between different procs rather than by chance all the events coming from 1 proc. This helped to diagnose the race condition and the the assert was removed when the previous bullet point on this page was implemented by me.


  • Fixed a memory leak in Tap::Parser::Iterator::Process::Windows. The leak was caused by me not including a statement that was in Tap::Parser::Iterator::Process::Unix which broke a circular reference, where $self of Tap::Parser::Iterator::Process::* was closed over in next() method, since the next() method prototype had no arguments, not even $self. @_ was designed to be empty on entry to the method since T::H's last major dev work in ~2007. Changing the prototype of next method to make it sane should be done but was not tried due to high risk of breaking other parts of T::H's code and tests, and possibly compat CPAN addon modules to T::H. The memory leak was discovered by writing a temporary DESTROY method and breakpointing it. Bizarrely and unperl-like, there isn't a single DESTROY method in T::H. T::H instead uses circular references and C++ style explicit memory management with *_finish* methods to break circular references.
  • Added an Win32 async compatible IO loop to TAP::Parser::Multiplexer. Complexity includes that T::H is a pull architecture as leont describes in . I hacked on a push option to Tap::Parser::Iterator::Process::Windows, which is implemented by a combination of, "if set to push mode, forbid pulls (blocking IO AKA hangs)" and pushing data off the Win OS pipe handle into Iterator objects causes later possibly blocking "read" methods, to be guaranteed non-blocking, as the data is already queued in PP space, which matches the existing Multiplexer architecture. The push option I added adds a POC that a more efficient POSIX event loop than IO::Select (aio/epoll/kqueue) could be added in the future to T::H. Other difficulties include analyzing what seem to be or are circular references and convincing oneself that they are not bugs but by design. I discussed a number of designs with leont that we both rejected for various reasons. One rejected redesign of Multiplexer were weak references (not used at all by T::H previously and not used currently after my improvements) and callbacks from the Iterator object back to the Multiplexer object in a outer stack frame. Since non-parallel T::H harness test runs use _aggregate_single and not _aggregate_parallel, there may or may not be a Multiplexer object in the callstack at any random call into an Iterator object. Using caller() or CPAN modules that use basically perl debugging facilities to walk the callstack, to look for a Multiplexer object to notify which Iterator object/Parser object was ready to read was also rejected.
  • went to cpan river meeting


  • had Mithaldu test T::H win32 async/parallel testing branch on his 8 core. It passed on Strawberry 5.20. The XS part on Strawberry 5.18 failed to build due to Mingw/GCC header support problems with swprintf, which MS gave a different prototype many years ago, and both MS and GCC eventually changed the plain C prototype of of swprintf to be ISO compliant, breaking back compat unless a CPP macro is used to enable the old non-compliant swprintf. The different in swprintf prototypes is the 2nd argument, which is a buffer size count on ISO, and a pointer on MS non-ISO, which SEGVs when the 2 are confused.
  • optimized T::H on all platforms by removing and combining and moving around getter meth calls, NYTProf, MS timeit, and perl stepping used
  • added a appveyor and travis config, appveyor (a Windows CI provider) passes (only 5.22 is easily available on Appveryor), T::H on travis fails on 5.10.0 alone in 5.10 series and and 5.8 before 5.8.9, I did not attempt to fix the travis old perl on linux failures
  • tested EUMM on various Windows Perl+CC+make combinations for Bingos. Discovered/bisected to EUMM 7.00 and newer can't build on dmake 4.8, filed ticket with EUMM.
  • did a small startup time optimization to Win32::APipe which is the XS part of the Win32 T::H parallel code
  • fixed Win32::APipe's tests to match code changes to Win32::APipe done during QAH
  • discussed the large amount of Windows 10 console corruption observed on Mithaldu's laptop when stable T::H was running normally, the corruption is inverted color, and sometimes random pixel corruption, in blocks of text cells in the Windows console when T::H is writing its "3/123" progress thing to the console. Leont said T::H sends many "/r"s chars to the console to rewrite the current line and "delete" the current console line to rewrite the progress line in the console. The mithaldu Win 10 corruption with T::H is not observed if T::H runs in verbose mode (and therefore no "/r" without "/n" chars). Using the Win 10 console scroll bars redraws and fixes the GUI corruption but highlighting and unhighlighting the corruption does NOT fix it, just inverts the color of it as if it were proper text.
  • discussed TAP spec with leont and aristotle

Christian Walde

Doug Bell

Wendy van Dijk

  • Went shopping every day, sometimes twice a day, for fruit, vegetables, cookies, nuts, soda, tea and other things
  • Spent several hours every day preparing the fruit and vegetables, and cleaning after the other people
  • Attended three meetings (Test2 & Test::Builder, River of CPAN, Test2), took notes, took a bit part in some discussions, and transcribed the notes and sending the texts to Chad, Neil and Ricardo.
  • Succeeded in wasting many people's time with silliness and booze.

Karen Etheridge (‎Ether‎)

  • fixed Dist::Zilla::Plugin::DynamicPrereqs's injection of Makefile.PL snippet using ExtUtils::HasCompiler for the can_xs() sub, and re-released B::Hooks::EndOfScope with the fix
  • released a new Moose (2.1705-TRIAL) with a similar change to use ExtUtils::HasCompiler in its Makefile.PL for XS sanity checking
  • discussed the old JSON::PP bug involving parsing unicode META.json ( and the injection of a JSON::PP "suggests" prereq via Dist::Zilla::Plugin::Git::Contributors with Ricardo Signes (‎rjbs‎) more; this led to a change in Dist::Zilla where it now creates pure-ascii META.json files, and a similar change to come in ExtUtils::MakeMaker for MYMETA.json generation
  • wrote a blog post:
  • released Olaf Alders (‎oalders‎)'s MooseX::Getopt fix for init_args (thanks Olaf!)
  • started to fix logic in Dist::Zilla::Plugin::MakeMaker regarding its choice of minimum ExtUtils::MakeMaker versions depending on the presence of version ranges in prereqs and added test coverage; shelved this work for now as it requires more refactoring than I have time for at the event
  • discussed the application of module permissions on new uploads to PAUSE with user:andk, user:bwfg etc and proposed changes to handing of x_authority metadata (similar to the semantics behind the prototype x_authority_from_module, see Dist::Zilla::Plugin::AuthorityFromModule)
  • (attempted to) reproduce various issues in cpanm-reporter with user:garu and dogfooded his fixes
  • CPAN river discussion with Neil Bowers (‎NEILB‎) and many others
  • review of Software::License issues and support policy with Ricardo Signes (‎rjbs‎), Kenichi Ishigaki (‎charsbar‎), Neil Bowers (‎NEILB‎) and others
  • various discussions of Test2 and upcoming releases (see also
  • witnessed the birth Dist::Zilla 6! ..and a made few plugin releases in the wake thereof to fix up new issues thus revealed, or clean up code that is now possible
  • spent significant time examining outstanding Module::Metadata issues (especially regressions since the last stable release), reviewed previous unfinished work fixing these, writing additional tests.. discovered that both the documentation and the actual code surrounding the 'name()' interface are (IMHO) wrong and need significant rethinking and rework, but this is out of scope for the time available at the QAH, so I shelved this for now and went back to fixing the regressions, which I believe I have done now with the 1.000032-TRIAL release
  • (not yet finished - hopefully Sunday) review, discuss and merge outstanding Sub::Name pull requests, involving handling of unicode or binary symbols


  • Tests for PAUSE web-front-end
  • Travis job for PAUSE

Chad 'Exodist' Granum

  • Test2 Discussion
  • Merge Test2 into Test-Simple
  • X-Breaks for Test2
  • Fix some bugs in Test2 found at QAH by testers
  • Unit testing for Test2::Harness
  • Another Test2 discussion
  • Benchmark perl test suite under Test2 (direct, not via Test::Builder)
  • Make Test2::Harness work in windows (Thanks Mithaldu!)
  • Find and debug shm issue in Test2 (Thanks Eserte!)


  • Added new env vars to select JSON backends for Parse::CPAN::Meta so it can use Cpanel::JSON::XS, Mojo::JSON, etc. (currently shipped as devrel)
  • Wrangled puppet and postgresql replication for metacpan, mostly ready though certain parts of the puppet module are un(der)documented so not quite finished reverse engineering it all into puppet configs
  • Volunteered as resident ' anti-drama llama' so other people could do more useful things than get into arguments
  • Helped a bunch of people crowbar a bunch of things in infrastructure and systems-ish stuff, plus being fresh eyes for debugging a few times

Steffen Schwigon (‎renormalist‎)

  • Benchmark::Perl::Formance
    • Finetuned my benchmark bundle "perlstone2015" which I started last year.
    • Extended my ~300 Perl installations (of versions since 5.8.9, +/- threaded, +/-64bit) with the 5.23.* series and 5.24.0.
    • Updated all those Perls to use current same set of CPAN dependencies.
    • Ran the "fastmode" variants (reduced runtime) over most of these Perls.
    • Created new charts and a dashboard
    • First conclusions:
      • reported micro optimizations like the "small blocks" entry/exit improvement are visible
      • algorithmic benchmarks like binarytrees, fannkuch, fasta, nbody, mandelbrot became remarkably faster during 5.23.*
      • others like regexdna and spectralnorm became already faster with 5.20, and could keep that speed
      • some regex micro benchmarks run faster
      • however, the regex engine micro benchmarks generally became slower since 5.18, but at least kept stable at that level until 5.24.0.
    • *CAVEAT* - I could only run the scaled-down "fastmode" benchmarks. I will run the heavier-weight benchmarks throughout the next weeks.
  • Perl and CPAN::Reporter on L4 Linux
    • Built Perl 5.22.1 and enabled CPAN::Reporter on an Ubuntu 16.04 system running an "L4 Linux" kernel 4.4.
    • L4 Linux is a Linux variant running on the L4Re micro-kernel.
  • Co-maintaining modules
    • merged github changes from Lance Kinley for Net::SSH::Perl new ciphers, key exchange algorithms and more; released version 2.01 to CPAN, see
    • En passant also uploaded Lance Kinley's Crypt::OpenBSD::Blowfish to CPAN.

Slaven Rezić (SREZIC)

Olivier Mengué (‎dolmen‎)

Day 1

  • Dist::Zilla
    • New PrereqsScanner role
      • I find AutoPrereqs too slow. For an long time I had an idea about a replacement for AutoPrereqs power: scan only the dist source on release to check that dependencies detected mach dependencies that have been declared manually in another way (for example with a cpanfile)
      • So with Philippe Bruhat (‎BooK‎), refactored Dist::Zilla::Plugin::AutoPrereqs to extract Dist::Zilla::Role::PrereqsScanner to allow reuse by others scanners (Dist::Zilla::Plugin::AutoPrereqs::Fast)
      • Refactored Dist::Zilla::Plugin::AutoPrereqs::Fast to use that role. I still have to push the pull request
      • Still have to implement my initial idea though :(
      • The PrereqsScanner work made me had a look at dzil finder roles and I sent a patch
    • A month ago I implemented major optimisations in Data::OptList (see ), so I sent a pull request to add a dependency on that version:
  • Pod::Spell
    • Merged patches
    • Made a new release
    • Had a look at the river below Pod::Spell. We know that we lack tools for that at the moment. But I got information from the work in progress at that QAH to improve that.
  • Test2/Test::Builder discussion

day 2

  • Test2
    • Installed the dev release of the new Test::Builder based on Test2
    • Started to upgrade all my local modules using that new test toolchain, with the help of App::cpanoutdated. I have CPAN::Reporter enabled, so the results are fed to
    • No failures reported. Great!

Olivier Mengué (‎dolmen‎) Days 2, 3, 4

  • To be continued for reports of days 2, 3, 4...

Andreas Koenig

  • fixed a bug discovered by Leo Lapworth in `rrr` synchronization: it turned out that a crontab item got mangled recently
  • joined the Test2 discussion
  • set up a smoker run for 5.18.4 with the Test-Simple releases 1.302014_001..7
  • finished the pre-Hackathon activities on getting the Perl Authors Upload Server (PAUSE) to work with two separate puppet instances, one for the system operation team, and one the application (together with Robert Spier)
  • added sysv startup gears for the new plack-driven PAUSE server and fine-tuning configuration (together with Slaven Rezić and Kenichi Ishigaki)
  • continued the year-long activities on transforming the database of PAUSE to work without the `mods` table and cleaning up inconsistencies (together with Neil Bowers)
  • helped out with my admin privileges on PAUSE to fix an upload glitch during Dist-Zilla-6 developer release
  • reviewed pull requests on that had accumulated over the year and applied: 210, 206, 214, 216, 209, 215, 219, 207, 220, 190, 168, 172, 133, 137, 208, 212, 211, 217, and 221 (together with Kenichi Ishigaki); special thanks go to the contributors pjlsergeant, wolfsage, mohawk2, rjbs, dagolden, neilb, charsbar who generated the pull requests
  • consultation with Breno G. de Oliveira about cpanminus reporter
  • consultation with Colin Newell, Ricardo Signes, and Karen Etheridge about how to retain sane upload-permissions for collaborating groups of users
  • consultation with Joel Berger on a potential Mojolicious cookbook article about when and when not to use `weaken`

Elizabeth Mattijsen (‎liz‎)

  • Implemented $*MAIN-ALLOW-NAMED-ANYWHERE feature, allowing a more familiar CLI to scripts (inspired by tadzik++)
  • Implemented comparison operators other than cmp for Version objects
  • Looked deeper into how Version objects are actually two types of objects
  • Make a bit faster (spectest now runs 5% faster)
  • Looked at/Merged leont++ work wrt to running spectest using a Perl 6 harness
  • Fixed a crash in Channel handling found by MarcusRamberg
  • Discussed a lot of PAUSE / Perl 6 / CPAN issues with available people, which should be coming to fruition later this year
  • Helped Perl 6 newbies by answering Perl 6 questions

Philippe Bruhat (‎BooK‎)

  • closed two old Test::Database bugs reported by Sawyer
  • worked with Olivier Mengué (‎dolmen‎) on Dist::Zilla::Role::PrereqsScanner
  • attended several discussions: Pakket, CPAN River, Hackathon renaming
  • spent a lot of time discussing Git::Database with Olivier Mengué (‎dolmen‎), and also hacking on it
  • worked on getting a complete mapping of CPAN distributions to Debian packages using UDD (Ultimate Debian Database). Mapped over 3300 CPAN distributions. The next step is a metacpan PR to show this information
  • looking for Debian packaged CPAN distributions led to discussion about bringing GreyPAN/DarkPAN into the light, with a goal of providing better CPAN River metrics
  • hacked on Git::Version in Perl 6 with Elizabeth Mattijsen (‎liz‎), which led to discussions about the Version class in Perl 6, and several rakudo commits by Liz to improve it
  • improved (by a factor of about 25) the number of tests in Perl 5 Git::Version::Compare after reading the Perl 6 tests for, and started working on stress tests for Perl 6 using the same technique


  • refamiliarised myself with the CPANPLUS codebase with a view to implementing less memory intensive source engine
  • released Module-Install-CheckLib-0.10 following release engineering of outstanding pull request
  • released Devel-PatchPerl-1.42 to fix issues with perlbrew and installing perls from perl git repository
  • released Test-POE-Server-TCP-1.20, including IPv6 support. This is a dependency for metabase-relayd, so that should now support IPv6
  • released POE-Component-Server-NNTP-1.06 after converting distribution to Dist::Zilla following a private email about broken META information
  • released CPANPLUS-YACSmoke-0.96 and CPANPLUS-YACSmoke-0.98 to include additional ENV vars relating to Test::Harness in generated CPAN reports
  • updated CPAN smoke boxes to use new CPANPLUS::YACSmoke
  • Bisected issue with Inline/Inline::C and ExtUtils::MakeMaker. Leon Timmermans (‎leont‎) contributed the fix
  • released ExtUtils-MakeMaker-7.13_01 after testing with Inline/Inline::C and against 20 different perls
  • tested ExtUtils-MakeMaker-7.13_01 on Solaris 11, Haiku, Neutrino QNX, Debian, Ubuntu, FreeBSD and older Darwin. Confirmed tests okay on modern Darwin
  • build and test of blead for Ricardo Signes (‎rjbs‎) after changes before upload of v5.24.0-RC2
  • released CPAN-Perl-Releases-2.66 updated for v5.24.0-RC2
  • released ExtUtils-MakeMaker-7.14 after checking the results for the ExtUtils-MakeMaker-7.13_01 testing
  • released Archive-Tar-2.06 after being prompted to do so by Kenichi Ishigaki (‎charsbar‎) and consulting with Philippe Bruhat (‎BooK‎) about his contributed tests
  • released Module-Install-ReadmeFromPod-0.24 with long outstanding fixes after being prompted by Christian Walde (MITHALDU)
  • read up about linux-kvm deployment with a view to moving CPAN smoker host to that from VirtualBox
  • general interference, erm, assistance, in other people's work :)

Joel Berger (‎jberger‎)

  • Attended discussions on: Test2, Pakket, CPAN River
  • Helped compile list of modules that were affected by Test2 for reporting at installation time
  • Advocated for Test::Builder-on-Test2 (blog)
  • Learned and deployed the MetaCPAN vagrant system for testing
  • Discussed CPAN River data display for MetaCPAN as well as other reporting systems
  • Implemented the mechanism for accepting CPAN River data from Neil Bowers (‎NEILB‎)'s upcoming service into MetaCPAN
  • Implemented a polyfill for the __SUB__ token based on the code from Sub::Current intended for inclusion in the core module Sub::Util
  • Discussed future directions for Module::Build::Tiny and other Module::Build successor projects with Leon Timmermans (‎leont‎)
  • Did initial investigations into issue with Inline/Inline::C and ExtUtils::MakeMaker for BinGOs. This eventually proved out of my capacity but I was happy to help get it started and others ran with it from there.
  • See also: blog recap

Sawyer X

  • Attended discussions on Test2, CPAN River, QAH
  • Conducted a discussion on packaging
  • Worked with Leo (Ranguard) Lapworth, Mickey Nasriachi, and Olaf Alders on MetaCPAN. Fixed a few tests, untangled some architectural code.
  • Updated MetaCPAN::Client for Search::Elasticsearch 2.0+. Not released yet.
  • Fixed Ref::Util's regular expression checks for Perl 5.10 and above with the help of Aaron Crane
  • Decided how to move forward with Ref::Util's regular expression checks before 5.10 (to support 5.6 and 5.8) with Aaron Crane and Matthew Horsfall
  • Decided how to move forward with Ref::Util's blessed vs. non-blessed (plain) functions with Aaron and mst
  • Worked on packaging, added proper logging, etc.
  • Released a new version of Dancer::Session::JSON fixing a JSON issue (thanks, Ishigaki-san!) and submitted a PR to Dancer2::Session::JSON with a similar fix and poked Jason Crome to merge and release
  • Had discussions with Abe Timmerman on tracking Perl core tests across operating systems and smokers

Ricardo Signes (‎rjbs‎)

  • Dist::Zilla v6!
  • perl v5.24.0-RC2!
  • Software-License v0.103012
  • lots of useful discussions and pairing with other users

Neil Bowers (‎NEILB‎)

  • QAH organisation stuff
  • Worked through the remaining 'm' permissions in PAUSE, discussed them with ANDK and RJBS, and decided the right action for each one. Most of them were DB actions for ANDK; I'm working through remaining tasks. I'll blog separately about this once it's complete.
  • Worked on CPAN Testers fails in Pod-Simple, caused by Pod::Simple::Search
  • Chaired a discussion on the River of CPAN, following up on the discussion at last year's QAH, and work done since. We agreed some key things we want to see happen, to improve awareness. Will be writing up separately.
  • Talked to Olaf about getting the river data I'm generating into MetaCPAN, so the river position of distributions will be shown.
  • Mocked up how we might present the river position for a dist, then talked about it with Barbara Veloso, who then did some much better mock-ups.
  • Chaired a discussion about the name of the QA Hackathon, why a different name may serve us better, and possible words to use. No final decision. Will write up separately.
  • Gathered a lot of feedback on what worked well and what didn't, which I'll include in notes about organising a QAH.
  • Discussion about Software::License with RJBS, ETHER, and LEONT.
  • Discussions with various people about various things

Leon Timmermans (‎leont‎)

  • Fixed a regression in ExtUtils::MakeMaker that broke Inline::C
  • Worked on making perl6's build less dependent on perl5
  • Made various improvements to Dist::Zilla::Role::ModuleIncluder, to make ExtUtils::HasCompiler easier to include in distributions
  • Participated in the Test2 discussion.
  • Helped user:bulk88 with various Test::Harness issues
  • Released the last Module::Build devrel as stable.
  • Looked into some blead-breaks-core issues
  • Helped jberger with his __SUB__ polyfill

Colin Newell (NEWELLC)

I was able to discuss a change to PAUSE permissions and get it implemented.

I also created a new module to check for consistent PAUSE permissions imaginatively called Test::PAUSE::ConsistentPermissions. It also contains a standalone script for checking modules on CPAN.

I was also able to send a few pull requests out for various bits I fixed during the weekend too.

Blog post up at

Leo Lapworth (‎Ranguard‎)

I could only make 2 days but did a lot of sysadmin around the MetaCPAN Project, adding minion queues, setting up extra features on the development VM, building improvements for our new environment.

I also had many useful discussions with several other people and projects, I've blogged about this great experience.

Matthew Horsfall (‎alh‎)


* Looked into/closed various tickets
* Allow build-fresh-cpan to prefil tables from 02packages/06perms.
* Add sha1 checksums along side md5 checksums in index report emails
* Clarify that -TRIAL0-9* is accepted, but not _TRIAL.
* Keep emails in build-fresh-cpan
* Add note that upload may have failed because a package is missing.


* Add ->version() method to PPI::Statement::Package


* Filed bug for App::cpanminus (paths with ':' break testing)
* PR to let Module::Pluggable build on older Test::Mores:
* PR to update Devel::PatchPerl in perlbrew
* Tracked down and solved issue where newer Memcached::libmemcached would break CHI::Driver::Memached


Started a new project to make smoking distributions against downstream distributions easier

Olaf Alders (‎oalders‎)


Full details in the official blog post. Short version follows below:

  • Worked primarily on squashing bugs in the MetaCPAN Elasticsearch upgrade
  • Chatted with Neil Bowers about integration CPAN River data into the MetaCPAN API
  • Worked with Joel Berger on getting started with the MetaCPAN developer environment
  • Was able to review and merge Joel Berger's subsequent pull request to add Neil Bowers' CPAN River data to the MetaCPAN API
  • Spoke with Paul Johnson about a second attempt to integrate with Created relevant Github tickets so that we can track this work. It will happen subsequent to the Elasticsearch upgrade
  • Spoke with Book about incorporating Debian packaging information into MetaCPAN. This will follow essentially the same format as Joel Berger's pull request.
  • Moved the MetaCPAN API away from Test::Harness, which is likely going to break with the release of Test2. Also, Test::Harness was making it hard to run smaller subtests of the suite in isolation. This is a good improvement. When Test2::Harness is released, we'll look at moving to that.
  • Released MetaCPAN::Moose to CPAN. This is used internally now, but has some value as a CPAN module.
  • Spoke with Doug Bell about getting the CPAN Testers database back online. As of April 29 this is now once again available.
  • Spoke with BINGOS about Sort::Naturally. He got co-maint on this module assigned to me.
  • Did a lot of pair programming with Mickey Nasriachi on MetaCPAN as well as some debugging with Sawyer and Matt Trout.
  • Released a new version of ElasticSearchX::Model after Matt Trout identified a bug and submitted a patch.
  • Worked closely with Leo Lapworth, who handled the various sysadmin tasks for the upgrade

Kenichi Ishigaki (‎charsbar‎)

  • fixed bugs and regressions of PAUSE on Plack
  • shipped Test::PAUSE::Permissions, Parse::LocalDistribution, and Module::CPANTS::Analyse
  • asked people to ship JSON::PP, Email::Sender, Software::License, Dancer::Session::JSON, Archive::Tar
  • some CPANTS refactoring (including addition of one metric)

Oriol Soriano Vila (‎Uree‎)

  • Deployed AWS Spot fleets of CPAN Testers smokers in an automated manner.
  • Worked with Garu on getting cpanm reporter to report to CPAN Testers modules installed with Carton.
  • Attended discussions: presentation of pakket & River of CPAN
  • Got to set up a new record for the amount of times my brain exploded per unit of time.

Tadeusz Sośnierz (‎tadzik‎)

  • Worked on much needed and long overdue panda rework
  • Released Module::Toolkit and App::redpanda as a part of that
  • Found and fixed a bug in Rakudo with "where" constraints in MAIN wouldn't properly trigger USAGE (later improved by peschwa++)
  • Released Getopt::Type (not really toolchain related)
  • Fixed the Qt profiler frontend to work on the new profiler output format
  • Added an easy way to build the bleeding rakudo in rakudobrew
  • Went through a lot of bugs in panda and rakudobrew

Paul Johnson (‎pjcj‎)

  • Discussions with Leo Lapworth about making more robust - we have various short-term and longer-term plans there.
  • Worked with Olaf Alders about integrating and more tightly, and we have a plan to make that happen. Improved cpancover error handling when a module can't be covered.
  • Discussed the possibility of uploading test coverage data from CPAN::Reporter with Breno G. de Oliveira, both to the metabase and to
  • Thought about making more dynamic, and better displaying the available data (for example showing coverage changes over time), and discussed this somewhat with both Leo and Breno.
  • Spoke separately from both Tim Bunce and Sawyer X about a desire to get coverage data without as much overhead as Devel::Cover currently imposes, and have some avenues to pursue there.
  • Discussed packaging with Saywer X and, in particular, his recent work in this area.
  • Released Selenese module to CPAN to run Selenium IDE tests outside of the IDE.
  • Fixed various Devel::Cover bugs.
  • Released new version of Devel::Cover deprecating support for Perl versions below 5.8.1.
  • Worked on a Devel::Cover bug in condition coverage caused by an optimisation in short-circuiting added to the perl op tree.

Last modified: 07/05/16 20:12 by Paul Johnson (‎pjcj‎)

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