What's new in Carton and cpanm at YAPC::Asia 2013

by Tatsuhiko Miyagawa

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What's new in Carton & cpanm Tatsuhiko Miyagawa YAPC::Asia 2013 Keio University Saturday, September 21, 13

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Me • Tatsuhiko Miyagawa • Lives in San Francisco • {github,twitter,CPAN}/miyagawa Saturday, September 21, 13

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Saturday, September 21, 13

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speakerdeck.com /miyagawa Saturday, September 21, 13

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Agenda • cpanm 1.6 / 1.7 • Carton 1.0 • What's Next Saturday, September 21, 13

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cpanminus tiny, standalone CPAN installer that "just works" Saturday, September 21, 13

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vs. other installers Sane defaults. Quiet output. Fast and lightweight. One ﬁle install. Saturday, September 21, 13

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% curl -‐L cpanmin.us \ | perl -‐ App::cpanminus Saturday, September 21, 13

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♥ perlbrew, plenv Saturday, September 21, 13

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cpanm 1.6 released in 2/26 Saturday, September 21, 13

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Pinning versions Flexible version query Saturday, September 21, 13

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> cpanm [email protected] > cpanm Plack~">= 1.0, < 2.0" Saturday, September 21, 13

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♥ MetaCPAN Saturday, September 21, 13

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--dev Saturday, September 21, 13

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install via git Saturday, September 21, 13

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> cpanm git://github.com/plack/Plack.git@devel Saturday, September 21, 13

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cpanﬁle support Saturday, September 21, 13

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> cat cpanfile requires 'Plack', '1.0000'; > cpanm -‐-‐installdeps . Saturday, September 21, 13

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cpanm 1.7 9/4, 2013 Saturday, September 21, 13

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Major changes • Smaller executable size: 350KB -> 230KB • ♥ Travis CI • Better prerequisite spec support • Build Args support • Uninstall Saturday, September 21, 13

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Saturday, September 21, 13

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# cpanfile on develop => sub { requires 'Test::Pod'; recommends 'Devel::NYTProf'; }; > cpanm --installdeps . \ --with-develop \ --with-recommends Saturday, September 21, 13

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# cpanfile feature 'sqlite' => sub { requires 'DBD::SQLite' recommends 'DBI', 3.1; }; > cpanm --installdeps . \ --with-feature=sqlite Saturday, September 21, 13

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# travis.yml install: cpanm -nq --installdeps \ --with-develop --with-recommends Saturday, September 21, 13

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cpanm DBD::mysql \ --configure-args="--with-mysql=/usr/local/ mysql" Saturday, September 21, 13

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cpanm --uninstall DBI cpanm -U DBI Saturday, September 21, 13

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github.com/ miyagawa/cpanminus Saturday, September 21, 13

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Carton Bundler for Perl Saturday, September 21, 13

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Managing CPAN Dependencies Saturday, September 21, 13

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Why you need it Saturday, September 21, 13

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(snip) http://yapcasia.org/2011/talk/91 Saturday, September 21, 13

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“Upgrading CPAN modules broke my app” Saturday, September 21, 13

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Dependencies are part of your app. Saturday, September 21, 13

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cpanfile + cpanm • Simple • Yet powerful and flexible way to describe dependencies and version requirements • Version control cpanfile Saturday, September 21, 13

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# cpanfile requires 'Plack', '== 1.0001'; requires 'DBI', '== 3.2'; ... Saturday, September 21, 13

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caveats • Locking each dependency with speciﬁc version is tedious work • Can only lock direct dependencies • MetaCPAN as SPOF • No easy/reliable way to fallback Saturday, September 21, 13

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Carton Saturday, September 21, 13

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Basic idea: Describe CPAN dependencies snapshot tarball pathnames Saturday, September 21, 13

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Built on top of: cpanﬁle + cpanm 1.6 Saturday, September 21, 13

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carton 1.0 released in 8/4 Saturday, September 21, 13

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What's new in 1.0 • No Makefile.PL/Build.PL support (cpanfile) • cpanfile.snapshot (no carton.lock) • 20x faster tree command • More reliable version extraction • carton update, carton bundle • fatpack executable for bootstrap Saturday, September 21, 13

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DEMO Saturday, September 21, 13

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gum.co/BmXz Saturday, September 21, 13

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Deployment with Carton Saturday, September 21, 13

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@local> carton install @local> git commit cpanfile.snapshot @local> git push @remote> carton install -‐-‐deployment @remote> carton exec plackup ... Saturday, September 21, 13

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Example: github.com/miyagawa/cpanmetadb-perl capistrano, Server::Starter, carton, plackup (twiggy) Saturday, September 21, 13

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PaaS/Cloud github.com/miyagawa/heroku-buildpack-perl Saturday, September 21, 13

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Saturday, September 21, 13

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http://weblog.bulknews.net Saturday, September 21, 13

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Support to come! Dokku, DotCloud, Travis CI, Cloud Foundry etc. Saturday, September 21, 13

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github.com/miyagawa/carton irc.perl.org #carton Saturday, September 21, 13

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Sneak Preview Saturday, September 21, 13

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cpanm 1.8 cpanﬁle 1.1 Carton 1.1 Saturday, September 21, 13

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BETA Saturday, September 21, 13

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cpanm 1.8 git (+ any URL) support in index Saturday, September 21, 13

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cpanﬁle 1.1 git syntax support Saturday, September 21, 13

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requires 'Plack', '1.0000', git => 'git://github.com/plack/Plack.git', ref => 'devel'; carton 1.1 Saturday, September 21, 13

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requires 'Plack', '1.0011', dist => 'MIYAGAWA/Plack-‐1.0011.tar.gz'; carton 1.1 Saturday, September 21, 13

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requires 'Plack', '1.0011', dist => 'http://darkpan/Plack-‐1.tar.gz'; carton 1.1 Saturday, September 21, 13

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(demo) Saturday, September 21, 13

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cpanm 1.8 • Rewrite internals • Backend API • Plugin support • CPAN Testers support (via plugins) Saturday, September 21, 13

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carton 1.1 • conﬁgure args/hints support • safe exec on development • remember options (--path etc.) Saturday, September 21, 13