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

Transcript

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

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

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4. speakerdeck.com
   /miyagawa
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5. Agenda
   • cpanm 1.6 / 1.7
   • Carton 1.0
   • What's Next
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6. cpanminus
   tiny, standalone CPAN installer
   that "just works"
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7. vs. other installers
   Sane defaults. Quiet output.
   Fast and lightweight. One file install.
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8. %  curl  -­‐L  cpanmin.us  \
   |  perl  -­‐  App::cpanminus
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9. ♥ perlbrew, plenv
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10. cpanm 1.6
    released in 2/26
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11. Pinning versions
    Flexible version query
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12. >  cpanm  DBI@1.200
    >  cpanm  Plack~">=  1.0,  <  2.0"
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13. ♥ MetaCPAN
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14. --dev
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15. install via git
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16. >  cpanm  git://github.com/plack/Plack.git@devel
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17. cpanfile support
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18. >  cat  cpanfile
    requires  'Plack',  '1.0000';
    >  cpanm  -­‐-­‐installdeps  .
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19. cpanm 1.7
    9/4, 2013
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20. Major changes
    • Smaller executable size: 350KB -> 230KB
    • ♥ Travis CI
    • Better prerequisite spec support
    • Build Args support
    • Uninstall
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21. Saturday, September 21, 13
    

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22. # cpanfile
    on develop => sub {
    requires 'Test::Pod';
    recommends 'Devel::NYTProf';
    };
    > cpanm --installdeps . \
    --with-develop \
    --with-recommends
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23. # cpanfile
    feature 'sqlite' => sub {
    requires 'DBD::SQLite'
    recommends 'DBI', 3.1;
    };
    > cpanm --installdeps . \
    --with-feature=sqlite
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24. # travis.yml
    install:
    cpanm -nq --installdeps \
    --with-develop --with-recommends
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25. cpanm DBD::mysql \
    --configure-args="--with-mysql=/usr/local/
    mysql"
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26. cpanm --uninstall DBI
    cpanm -U DBI
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27. github.com/
    miyagawa/cpanminus
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28. Carton
    Bundler for Perl
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29. Managing CPAN
    Dependencies
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30. Why you need it
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31. (snip)
    http://yapcasia.org/2011/talk/91
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32. “Upgrading CPAN modules
    broke my app”
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33. Dependencies are
    part of your app.
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34. cpanfile + cpanm
    • Simple
    • Yet powerful and flexible way to describe
    dependencies and version requirements
    • Version control cpanfile
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35. # cpanfile
    requires 'Plack', '== 1.0001';
    requires 'DBI', '== 3.2';
    ...
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36. caveats
    • Locking each dependency with specific
    version is tedious work
    • Can only lock direct dependencies
    • MetaCPAN as SPOF
    • No easy/reliable way to fallback
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37. Carton
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38. Basic idea:
    Describe CPAN dependencies
    snapshot tarball pathnames
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39. Built on top of:
    cpanfile + cpanm 1.6
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40. carton 1.0
    released in 8/4
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41. 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
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42. DEMO
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43. gum.co/BmXz
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44. Deployment
    with Carton
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45.  @local>  carton  install
     @local>  git  commit  cpanfile.snapshot
     @local>  git  push
    @remote>  carton  install  -­‐-­‐deployment
    @remote>  carton  exec  plackup  ...
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46. Example:
    github.com/miyagawa/cpanmetadb-perl
    capistrano, Server::Starter,
    carton, plackup (twiggy)
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47. PaaS/Cloud
    github.com/miyagawa/heroku-buildpack-perl
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48. Saturday, September 21, 13
    

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49. http://weblog.bulknews.net
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50. Support to come!
    Dokku, DotCloud, Travis CI,
    Cloud Foundry etc.
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51. github.com/miyagawa/carton
    irc.perl.org #carton
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52. Sneak Preview
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53. cpanm 1.8
    cpanfile 1.1
    Carton 1.1
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54. BETA
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55. cpanm 1.8
    git (+ any URL)
    support in index
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56. cpanfile 1.1
    git syntax support
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57. requires  'Plack',  '1.0000',
       git  =>  'git://github.com/plack/Plack.git',
       ref  =>  'devel';
    carton 1.1
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58. requires  'Plack',  '1.0011',
       dist  =>  'MIYAGAWA/Plack-­‐1.0011.tar.gz';
    carton 1.1
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59. requires  'Plack',  '1.0011',
       dist  =>  'http://darkpan/Plack-­‐1.tar.gz';
    carton 1.1
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60. (demo)
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61. cpanm 1.8
    • Rewrite internals
    • Backend API
    • Plugin support
    • CPAN Testers support (via plugins)
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62. carton 1.1
    • configure args/hints support
    • safe exec on development
    • remember options (--path etc.)
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63. Thank you!
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64. speakerdeck.com
    /miyagawa
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