perlbrew yapcasia 2010
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This is my perlbrew talk slide for YAPC Asia 2010.
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perlbrew yapcasia 2010
- 3. Perl Kang-min Liu @gugod
- 4. .meta • twitter.com/gugod • Perl / Javascript / Ruby programmer • CPAN Author for ~100 distributions • perlbrew
- 5. perlbrew
- 6. perlbrew • A tool to install tons of perls • switch between them • build with customized options (-D -A -U) • build from tarball or git
- 7. Usage perlbrew install perl-5.12.2 perlbrew install perl-5.13.5 * Internet connection is required
- 8. Usage perlbrew install perl-5.10.1 perlbrew install perl-5.8.8 * Internet connection is required
- 9. Usage # git checkout cd ~/src/perl perlbrew install . * Internet connection is not required
- 12. Usage perlbrew switch perl-5.12.2 # Disable perlbrew perlbrew off
- 13. Installation curl −LO http://xrl.us/perlbrew chmod +x perlbrew ./perlbrew install
- 14. Installation new curl -L http://xrl.us/perlbrewinstall | bash
- 15. Installation cpan -i App::perlbrew * Not recommended
- 16. Properties • does not require sudo • perl installation are isolated • site_lib, bin, lib • install a new version ≠ upgrade • @INC does not include old site_lib
- 17. Benefits • Easier-to-clean perl environments • Nuke the whole thing to clean the mess • Old @INC does not accumulate with old perls
- 18. Benefits • per-app isolated perl environments setup. • avoid, in advance, any possible incompatible issues with other apps. • know your site_libs • ‘sudo cpan’ is no more.
- 19. Why? • Don’t mess up vendor perl too much. • Learn new stuffs in the dev version of perl. • keep up with the fashion
- 20. Why? • Test modules or apps • ... with newer perl • ... with older perl
- 21. Why? • Test perl itself • Threaded perl • 64bit perl • performance • smokebrew
- 22. Why? • Play dark magic kitchen fire • Devel::Declare, B::*, XS • Better with a perl built with DEBUGING
- 23. development • github.com/gugod/App-perlbrew • so many pull requests • 20 contributors • send me pull requests any time!
- 24. development • better bash integration / experiments • easy site_lib management (clone / bundle / nuke) • Steal some goodies from Devel::PPPort
- 25. ←
- 26. ← perlbrew • /usr/local/bin/perl /opt/local/bin/perl /home/gugod/local/bin/perl • site_lib is preserved after upgrade
- 27. ← perlbrew • perl is so backward compatible • Ideal for developing and production • keep upgrading perl is generally OK
- 28. ← perlbrew • Upgrading CPAN modules isn’t necessarily OK. • Errors happens at runtime, when it’s not binary-compatible. • Developers must correctly specify module dependencies.
- 29. ← perlbrew • In CPAN Distribution you do that in Makefile.PL / META.yml • Same tool for App
- 30. Simple is Hard • support for legacy code and decisions. • perl, cpan • cpanm, perlbrew: new tools for the current fashion
- 31. Thoughts perlbrew « cpanm, rvm
- 32. Thoughts • Standalone program • embed non-core modules • very easy distribution • runs a tiny bit faster
- 33. Thoughts • « rvm • bash programming master-piece • developer-friendly experiences • production server
- 34. Further Thoughts • Test::Continuous • perlbrew • local::lib • App::local::lib::helper • cpanm • cpan-outdated • cpansearch
- 35. rapidly improves something a little bit better
- 36. rapidly improves something a little bit better ❤
- 37. Hates
- 38. Hates • CPAN dependency list for $framework is too long • CPAN $modules takes too long to install / tests takes very long time to finish • $software is too fat (eats too much memory space) and slow
- 39. Less Hateful • bundle cpan dists with your distribution • PAR / Shipwright / %INC hack • Avoid long dependency list
- 40. Less Hateful • smaller, single-purpose • less memory consumption • less sub-commands to be memorized • less memory consumption in your brain • easier to maintain / be faster
- 41. cpan install can run 90% faster...
- 42. By skiping all tests, cpan install can run 90% faster...
- 43. Less Hateful • To skip for tests safely, consult cpantester.org first • A cpan/cpanm plugin shall be written to automates that.
- 44. Less Hateful • Solving long dependency list problem is a no-op • if cpan installation is super fast • like < 1 second / module
- 45. Fast fists cannot be broken
- 46. side projects
- 47. cpan-sets • cpan-sets: local::lib switcher wrote in • « rvm gemset, bundler • App::local::lib::helper • experimental project • per-app bundle
- 48. cpanfile # Install with: cpanm < cpanfile http://github.com/bestpractical/jifty-dbi/tarball/master http://github.com/bestpractical/jifty/tarball/master http://github.com/bestpractical/jifty-plugin-openid B::Hooks::EndOfScope DateTime Digest::SHA1 Email::Address Exporter::Lite HTML::Entities JiftyX::Markapl JiftyX::ModelHelpers Markapl Regexp::Common Regexp::Common::Email::Address String::BufferStack Sub::Install Text::Markdown::Discount Text::MultiMarkdown UNIVERSAL::require common::sense
- 49. perlrocks • rubygems counter-part. • multi-version module install • use perlrocks; # perl5 syntax of ‘use’ use Foo-1.3; • site_lib/rocks/Foo-1.3/lib/Foo.pm • Installation tool (rock)
- 50. side projects • github.com/gugod/App-perlbrew • github.com/gugod/cpan-sets • github.com/gugod/perlrocks
- 51. Conclusion • github social coding actually works! • Easy distributing is important. • Simple is hard. • Fast is better then slow.
- 52. ∞ • Good + Simple + Easy toolkit • Keep new-comers by not frustrating them • Grow the community
- 53. Thank You