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Installation & Configuration of Modern Perl Stevan Little [email protected] CT Perl Developers Meetup Tuesday, September 10, 2013 with perlbrew, cpanminus and more.

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How many people ...

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How many people ... • use system Perl?

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How many people ... • use system Perl? • use Perl on a system without root access?

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How many people ... • use system Perl? • use Perl on a system without root access? • work with sysadmins who don’t like to install modules?

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Perl is Infrastructure

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perlbrew

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perlbrew • installs Perl in your $HOME directory

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perlbrew • installs Perl in your $HOME directory • http://perlbrew.pl

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perlbrew • installs Perl in your $HOME directory • http://perlbrew.pl • https://metacpan.org/release/App-perlbrew

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perlbrew

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perlbrew • curl -L http://install.perlbrew.pl | bash

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perlbrew • curl -L http://install.perlbrew.pl | bash • sudo cpan App::perlbrew && perlbrew init

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perlbrew

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perlbrew ‣ perlbrew install perl-5.18.0

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perlbrew ‣ perlbrew install perl-5.18.0 - installs side-by-side (not overwrite)

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perlbrew ‣ perlbrew install perl-5.18.0 - installs side-by-side (not overwrite) ‣ perlbrew switch perl-5.18.0

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perlbrew ‣ perlbrew install perl-5.18.0 - installs side-by-side (not overwrite) ‣ perlbrew switch perl-5.18.0 - not used until explicitly activated

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perlbrew ‣ perlbrew install perl-5.18.0 - installs side-by-side (not overwrite) ‣ perlbrew switch perl-5.18.0 - not used until explicitly activated ‣ perlbrew use perl-5.18.0

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perlbrew ‣ perlbrew install perl-5.18.0 - installs side-by-side (not overwrite) ‣ perlbrew switch perl-5.18.0 - not used until explicitly activated ‣ perlbrew use perl-5.18.0 - can be use temporarily (only in this shell)

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perlbrew

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perlbrew ‣ perlbrew list

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perlbrew ‣ perlbrew list - shows list of perls you have available

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perlbrew ‣ perlbrew list - shows list of perls you have available ‣ perlbrew available

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perlbrew ‣ perlbrew list - shows list of perls you have available ‣ perlbrew available - shows list of perls that are available to install

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perlbrew ‣ perlbrew list - shows list of perls you have available ‣ perlbrew available - shows list of perls that are available to install ‣ perlbrew alias perl-5.18.0 newest

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perlbrew ‣ perlbrew list - shows list of perls you have available ‣ perlbrew available - shows list of perls that are available to install ‣ perlbrew alias perl-5.18.0 newest - alias an existing perl to a better name

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perlbrew ‣ perlbrew list - shows list of perls you have available ‣ perlbrew available - shows list of perls that are available to install ‣ perlbrew alias perl-5.18.0 newest - alias an existing perl to a better name ‣ perlbrew uninstall perl-5.6.1

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perlbrew ‣ perlbrew list - shows list of perls you have available ‣ perlbrew available - shows list of perls that are available to install ‣ perlbrew alias perl-5.18.0 newest - alias an existing perl to a better name ‣ perlbrew uninstall perl-5.6.1 - delete older perl installs

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perlbrew

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perlbrew ‣ perlbrew self-upgrade

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perlbrew ‣ perlbrew self-upgrade - way to upgrade perlbrew itself

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perlbrew ‣ perlbrew self-upgrade - way to upgrade perlbrew itself ‣ perlbrew install-cpanm

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perlbrew ‣ perlbrew self-upgrade - way to upgrade perlbrew itself ‣ perlbrew install-cpanm - way to install cpan-minus (more on that soon)

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perlbrew ‣ perlbrew self-upgrade - way to upgrade perlbrew itself ‣ perlbrew install-cpanm - way to install cpan-minus (more on that soon) ‣ perlbrew lib

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perlbrew ‣ perlbrew self-upgrade - way to upgrade perlbrew itself ‣ perlbrew install-cpanm - way to install cpan-minus (more on that soon) ‣ perlbrew lib - way to manage local::lib dirs (more on that soon)

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plenv

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plenv • An alternative to perlbrew

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plenv • An alternative to perlbrew • https://github.com/tokuhirom/plenv

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plenv • An alternative to perlbrew • https://github.com/tokuhirom/plenv • does not depend on perl, written in bash

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plenv • An alternative to perlbrew • https://github.com/tokuhirom/plenv • does not depend on perl, written in bash • less invasive to environment

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plenv • An alternative to perlbrew • https://github.com/tokuhirom/plenv • does not depend on perl, written in bash • less invasive to environment • specifically made to work with Carton

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plenv • An alternative to perlbrew • https://github.com/tokuhirom/plenv • does not depend on perl, written in bash • less invasive to environment • specifically made to work with Carton • (more about that later)

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plenv • An alternative to perlbrew • https://github.com/tokuhirom/plenv • does not depend on perl, written in bash • less invasive to environment • specifically made to work with Carton • (more about that later) • I only just learned about it :)

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plenv

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plenv ‣ plenv install perl-5.18.0

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plenv ‣ plenv install perl-5.18.0 - installs side-by-side, no overwrite, just like perlbrew

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plenv ‣ plenv install perl-5.18.0 - installs side-by-side, no overwrite, just like perlbrew ‣ plenv global 5.16.2

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plenv ‣ plenv install perl-5.18.0 - installs side-by-side, no overwrite, just like perlbrew ‣ plenv global 5.16.2 - sets the perl for all shells

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plenv ‣ plenv install perl-5.18.0 - installs side-by-side, no overwrite, just like perlbrew ‣ plenv global 5.16.2 - sets the perl for all shells ‣ plenv shell 5.8.2

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plenv ‣ plenv install perl-5.18.0 - installs side-by-side, no overwrite, just like perlbrew ‣ plenv global 5.16.2 - sets the perl for all shells ‣ plenv shell 5.8.2 - can be use temporarily (only in this shell)

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plenv ‣ plenv install perl-5.18.0 - installs side-by-side, no overwrite, just like perlbrew ‣ plenv global 5.16.2 - sets the perl for all shells ‣ plenv shell 5.8.2 - can be use temporarily (only in this shell) ‣ plenv local 5.18.0

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plenv ‣ plenv install perl-5.18.0 - installs side-by-side, no overwrite, just like perlbrew ‣ plenv global 5.16.2 - sets the perl for all shells ‣ plenv shell 5.8.2 - can be use temporarily (only in this shell) ‣ plenv local 5.18.0 - sets the perl to be used in $CWD using .perl-version file

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plenv

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plenv ‣ plenv exec ack ...

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plenv ‣ plenv exec ack ... - similar to perlbrew you can exec via plenv

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plenv ‣ plenv exec ack ... - similar to perlbrew you can exec via plenv ‣ plenv install-cpanm

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plenv ‣ plenv exec ack ... - similar to perlbrew you can exec via plenv ‣ plenv install-cpanm - also comes with useful utilities for cpanm

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plenv ‣ plenv exec ack ... - similar to perlbrew you can exec via plenv ‣ plenv install-cpanm - also comes with useful utilities for cpanm ‣ plenv migrate-modules 5.8.2 5.18.0

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plenv ‣ plenv exec ack ... - similar to perlbrew you can exec via plenv ‣ plenv install-cpanm - also comes with useful utilities for cpanm ‣ plenv migrate-modules 5.8.2 5.18.0 - and useful means of transfering module installs

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local::lib

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local::lib • manage perl modules in your $HOME directory

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local::lib • manage perl modules in your $HOME directory • https://metacpan.org/release/local::lib

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local::lib • manage perl modules in your $HOME directory • https://metacpan.org/release/local::lib • works well with custom perl or system perl

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local::lib

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local::lib ‣ use local::lib;

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local::lib ‣ use local::lib; - will look in ~/perl5 for local perl modules

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local::lib ‣ use local::lib; - will look in ~/perl5 for local perl modules ‣ use local::lib “~/foo”;

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local::lib ‣ use local::lib; - will look in ~/perl5 for local perl modules ‣ use local::lib “~/foo”; - will look in ~/foo for local perl modules

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local::lib ‣ use local::lib; - will look in ~/perl5 for local perl modules ‣ use local::lib “~/foo”; - will look in ~/foo for local perl modules ‣ perl -Mlocal::lib=~/foo script.pl

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local::lib ‣ use local::lib; - will look in ~/perl5 for local perl modules ‣ use local::lib “~/foo”; - will look in ~/foo for local perl modules ‣ perl -Mlocal::lib=~/foo script.pl - or you can use it from the command line

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local::lib ‣ use local::lib; - will look in ~/perl5 for local perl modules ‣ use local::lib “~/foo”; - will look in ~/foo for local perl modules ‣ perl -Mlocal::lib=~/foo script.pl - or you can use it from the command line ‣ PERL_MB_OPT PERL_MM_OPT PERL5LIB

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local::lib ‣ use local::lib; - will look in ~/perl5 for local perl modules ‣ use local::lib “~/foo”; - will look in ~/foo for local perl modules ‣ perl -Mlocal::lib=~/foo script.pl - or you can use it from the command line ‣ PERL_MB_OPT PERL_MM_OPT PERL5LIB - or configure your environment to automatically use it

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cpanm

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cpanm • Smaller, faster, easier CPAN client

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cpanm • Smaller, faster, easier CPAN client • https://metacpan.org/release/App-cpanminus

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cpanm • Smaller, faster, easier CPAN client • https://metacpan.org/release/App-cpanminus • Zero-conf

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cpanm • Smaller, faster, easier CPAN client • https://metacpan.org/release/App-cpanminus • Zero-conf • Plays well with other tools

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cpanm • Smaller, faster, easier CPAN client • https://metacpan.org/release/App-cpanminus • Zero-conf • Plays well with other tools • perlbrew

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cpanm • Smaller, faster, easier CPAN client • https://metacpan.org/release/App-cpanminus • Zero-conf • Plays well with other tools • perlbrew • local::lib

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cpanm • Smaller, faster, easier CPAN client • https://metacpan.org/release/App-cpanminus • Zero-conf • Plays well with other tools • perlbrew • local::lib • cpanfile (more on that later)

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cpanm • Smaller, faster, easier CPAN client • https://metacpan.org/release/App-cpanminus • Zero-conf • Plays well with other tools • perlbrew • local::lib • cpanfile (more on that later) • Carton (more on that later)

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cpanm

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cpanm ‣ curl -L http://cpanmin.us | perl - --sudo App::cpanminus

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cpanm ‣ curl -L http://cpanmin.us | perl - --sudo App::cpanminus - install from the internet into system perl (note the sudo)

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cpanm ‣ curl -L http://cpanmin.us | perl - --sudo App::cpanminus - install from the internet into system perl (note the sudo) ‣ curl -L http://cpanmin.us | perl - App::cpanminus

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cpanm ‣ curl -L http://cpanmin.us | perl - --sudo App::cpanminus - install from the internet into system perl (note the sudo) ‣ curl -L http://cpanmin.us | perl - App::cpanminus - install in a non-system (local) perl

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cpanm ‣ curl -L http://cpanmin.us | perl - --sudo App::cpanminus - install from the internet into system perl (note the sudo) ‣ curl -L http://cpanmin.us | perl - App::cpanminus - install in a non-system (local) perl ‣ perlbrew install-cpanm

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cpanm ‣ curl -L http://cpanmin.us | perl - --sudo App::cpanminus - install from the internet into system perl (note the sudo) ‣ curl -L http://cpanmin.us | perl - App::cpanminus - install in a non-system (local) perl ‣ perlbrew install-cpanm - of course, this is simpler if you are using perlbrew

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cpanm ‣ curl -L http://cpanmin.us | perl - --sudo App::cpanminus - install from the internet into system perl (note the sudo) ‣ curl -L http://cpanmin.us | perl - App::cpanminus - install in a non-system (local) perl ‣ perlbrew install-cpanm - of course, this is simpler if you are using perlbrew ‣ perl -MCPAN -i App::cpanminus

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cpanm ‣ curl -L http://cpanmin.us | perl - --sudo App::cpanminus - install from the internet into system perl (note the sudo) ‣ curl -L http://cpanmin.us | perl - App::cpanminus - install in a non-system (local) perl ‣ perlbrew install-cpanm - of course, this is simpler if you are using perlbrew ‣ perl -MCPAN -i App::cpanminus - do it the old fashioned way

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cpanm

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cpanm ‣ cpanm Plack

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cpanm ‣ cpanm Plack - install a distribution

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cpanm ‣ cpanm Plack - install a distribution ‣ cpanm Plack/Request.pm

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cpanm ‣ cpanm Plack - install a distribution ‣ cpanm Plack/Request.pm - install the distribution this module belongs too

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cpanm ‣ cpanm Plack - install a distribution ‣ cpanm Plack/Request.pm - install the distribution this module belongs too ‣ cpanm MIYAGAWA/Plack-1.0000.tar.gz

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cpanm ‣ cpanm Plack - install a distribution ‣ cpanm Plack/Request.pm - install the distribution this module belongs too ‣ cpanm MIYAGAWA/Plack-1.0000.tar.gz - install a tar ball from CPAN

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cpanm ‣ cpanm Plack - install a distribution ‣ cpanm Plack/Request.pm - install the distribution this module belongs too ‣ cpanm MIYAGAWA/Plack-1.0000.tar.gz - install a tar ball from CPAN ‣ cpanm /path/to/Plack-1.0000.tar.gz

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cpanm ‣ cpanm Plack - install a distribution ‣ cpanm Plack/Request.pm - install the distribution this module belongs too ‣ cpanm MIYAGAWA/Plack-1.0000.tar.gz - install a tar ball from CPAN ‣ cpanm /path/to/Plack-1.0000.tar.gz - install a tar ball from disk

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cpanm

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cpanm ‣ cpanm http://cpan.metacpan.org/authors/id/M/MI/MIYAGAWA/Plack-0.9990.tar.gz

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cpanm ‣ cpanm http://cpan.metacpan.org/authors/id/M/MI/MIYAGAWA/Plack-0.9990.tar.gz - install a random tar ball from the internet

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cpanm ‣ cpanm http://cpan.metacpan.org/authors/id/M/MI/MIYAGAWA/Plack-0.9990.tar.gz - install a random tar ball from the internet ‣ cpanm git://github.com/plack/Plack.git

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cpanm ‣ cpanm http://cpan.metacpan.org/authors/id/M/MI/MIYAGAWA/Plack-0.9990.tar.gz - install a random tar ball from the internet ‣ cpanm git://github.com/plack/Plack.git - install from a git repository

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cpanm ‣ cpanm http://cpan.metacpan.org/authors/id/M/MI/MIYAGAWA/Plack-0.9990.tar.gz - install a random tar ball from the internet ‣ cpanm git://github.com/plack/Plack.git - install from a git repository ‣ cpanm git://github.com/plack/[email protected]

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cpanm ‣ cpanm http://cpan.metacpan.org/authors/id/M/MI/MIYAGAWA/Plack-0.9990.tar.gz - install a random tar ball from the internet ‣ cpanm git://github.com/plack/Plack.git - install from a git repository ‣ cpanm git://github.com/plack/[email protected] - install a specific tag from a git repository

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cpanm ‣ cpanm http://cpan.metacpan.org/authors/id/M/MI/MIYAGAWA/Plack-0.9990.tar.gz - install a random tar ball from the internet ‣ cpanm git://github.com/plack/Plack.git - install from a git repository ‣ cpanm git://github.com/plack/[email protected] - install a specific tag from a git repository ‣ cpanm git://github.com/plack/Plack.git@devel

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cpanm ‣ cpanm http://cpan.metacpan.org/authors/id/M/MI/MIYAGAWA/Plack-0.9990.tar.gz - install a random tar ball from the internet ‣ cpanm git://github.com/plack/Plack.git - install from a git repository ‣ cpanm git://github.com/plack/[email protected] - install a specific tag from a git repository ‣ cpanm git://github.com/plack/Plack.git@devel - install a specific branch from a git repository

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cpanm

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cpanm ‣ cpanm Plack~1.0000

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cpanm ‣ cpanm Plack~1.0000 - install 1.0000 or later

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cpanm ‣ cpanm Plack~1.0000 - install 1.0000 or later ‣ cpanm Plack~”>= 1.0000, < 2.0000”

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cpanm ‣ cpanm Plack~1.0000 - install 1.0000 or later ‣ cpanm Plack~”>= 1.0000, < 2.0000” - install the latest member of the 1.xxxx family

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cpanm ‣ cpanm Plack~1.0000 - install 1.0000 or later ‣ cpanm Plack~”>= 1.0000, < 2.0000” - install the latest member of the 1.xxxx family ‣ cpanm [email protected]

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cpanm ‣ cpanm Plack~1.0000 - install 1.0000 or later ‣ cpanm Plack~”>= 1.0000, < 2.0000” - install the latest member of the 1.xxxx family ‣ cpanm [email protected] - install a specific version (same as Plack~"== 0.9990")

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cpanm

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cpanm ‣ cpanm --force CGI

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cpanm ‣ cpanm --force CGI - force install even if the tests don’t pass

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cpanm ‣ cpanm --force CGI - force install even if the tests don’t pass ‣ cpanm --notest Moose

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cpanm ‣ cpanm --force CGI - force install even if the tests don’t pass ‣ cpanm --notest Moose - save time and skip tests (if you know they pass)

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cpanm ‣ cpanm --force CGI - force install even if the tests don’t pass ‣ cpanm --notest Moose - save time and skip tests (if you know they pass) ‣ cpanm --reinstall Plack

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cpanm ‣ cpanm --force CGI - force install even if the tests don’t pass ‣ cpanm --notest Moose - save time and skip tests (if you know they pass) ‣ cpanm --reinstall Plack - force an re-install of an existing package

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cpanm ‣ cpanm --force CGI - force install even if the tests don’t pass ‣ cpanm --notest Moose - save time and skip tests (if you know they pass) ‣ cpanm --reinstall Plack - force an re-install of an existing package ‣ cpanm --uninstall Plack

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cpanm ‣ cpanm --force CGI - force install even if the tests don’t pass ‣ cpanm --notest Moose - save time and skip tests (if you know they pass) ‣ cpanm --reinstall Plack - force an re-install of an existing package ‣ cpanm --uninstall Plack - this is experimental, but does its best to un-install

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cpanm

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cpanm ‣ cpanm --showdeps .

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cpanm ‣ cpanm --showdeps . - will list all the dependencies it finds for code

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cpanm ‣ cpanm --showdeps . - will list all the dependencies it finds for code ‣ cpanm --installdeps .

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cpanm ‣ cpanm --showdeps . - will list all the dependencies it finds for code ‣ cpanm --installdeps . - will install all the dependencies it finds

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cpanfile

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cpanfile • A format for describing CPAN dependencies

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cpanfile • A format for describing CPAN dependencies • https://metacpan.org/release/Module-CPANfile

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cpanfile • A format for describing CPAN dependencies • https://metacpan.org/release/Module-CPANfile • See also

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cpanfile • A format for describing CPAN dependencies • https://metacpan.org/release/Module-CPANfile • See also • https://speakerdeck.com/miyagawa/cpanfile

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cpanfile

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cpanfile • Based on Module::Install DSL

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cpanfile • Based on Module::Install DSL • A foundation for other tools

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cpanfile • Based on Module::Install DSL • A foundation for other tools ‣ cpanm --installdeps .

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cpanfile • Based on Module::Install DSL • A foundation for other tools ‣ cpanm --installdeps . • Carton (more on that later)

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Carton

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Carton • A tool for managing CPAN dependencies

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Carton • A tool for managing CPAN dependencies • https://metacpan.org/release/Carton

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Carton • A tool for managing CPAN dependencies • https://metacpan.org/release/Carton • See also

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Carton • A tool for managing CPAN dependencies • https://metacpan.org/release/Carton • See also • http://weblog.bulknews.net/post/59613058560/carton-1-0-screencast

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Carton • A tool for managing CPAN dependencies • https://metacpan.org/release/Carton • See also • http://weblog.bulknews.net/post/59613058560/carton-1-0-screencast • https://speakerdeck.com/miyagawa/carton-1-dot-0-at-oscon-2013

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Carton

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Carton • Inspired by Ruby’s Bundler module

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Carton • Inspired by Ruby’s Bundler module • Built on top of cpanfile, cpanm & local::lib

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Carton • Inspired by Ruby’s Bundler module • Built on top of cpanfile, cpanm & local::lib • Still relatively new (read: not totally stable)

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Carton

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Carton • Manages and installs all modules project local

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Carton • Manages and installs all modules project local • but not checked into version control

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Carton • Manages and installs all modules project local • but not checked into version control • Uses a cpanfile to keep track of depdencies

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Carton • Manages and installs all modules project local • but not checked into version control • Uses a cpanfile to keep track of depdencies • allows for module version to be frozen

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Carton • Manages and installs all modules project local • but not checked into version control • Uses a cpanfile to keep track of depdencies • allows for module version to be frozen • modules can be installed elsewhere using cpanfile

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Carton • Manages and installs all modules project local • but not checked into version control • Uses a cpanfile to keep track of depdencies • allows for module version to be frozen • modules can be installed elsewhere using cpanfile • will install exactly the version or version range you tell it too

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Carton • Manages and installs all modules project local • but not checked into version control • Uses a cpanfile to keep track of depdencies • allows for module version to be frozen • modules can be installed elsewhere using cpanfile • will install exactly the version or version range you tell it too • can create “cache” for installing on machine with no network

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Carton • Manages and installs all modules project local • but not checked into version control • Uses a cpanfile to keep track of depdencies • allows for module version to be frozen • modules can be installed elsewhere using cpanfile • will install exactly the version or version range you tell it too • can create “cache” for installing on machine with no network • don’t take my word for it ...

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Go watch this! ! http://weblog.bulknews.net/post/59613058560/carton-1-0-screencast

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Pinto

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Pinto • A(nother) tool for managing CPAN dependencies

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Pinto • A(nother) tool for managing CPAN dependencies • https://metacpan.org/release/Pinto

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Pinto • A(nother) tool for managing CPAN dependencies • https://metacpan.org/release/Pinto • See also

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Pinto • A(nother) tool for managing CPAN dependencies • https://metacpan.org/release/Pinto • See also • http://perlmaven.com/pinto-tutorial

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Pinto • A(nother) tool for managing CPAN dependencies • https://metacpan.org/release/Pinto • See also • http://perlmaven.com/pinto-tutorial • http://www.youtube.com/watch?v=oaBBVZFhJUk

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Pinto

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Pinto • Inspired by actual CPAN infrastructure

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Pinto • Inspired by actual CPAN infrastructure • creates a company-wide local CPAN

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Pinto • Inspired by actual CPAN infrastructure • creates a company-wide local CPAN • works with all tools (CPAN, cpanm, etc.)

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Pinto • Inspired by actual CPAN infrastructure • creates a company-wide local CPAN • works with all tools (CPAN, cpanm, etc.) • soon to be a hosted service

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Pinto • Inspired by actual CPAN infrastructure • creates a company-wide local CPAN • works with all tools (CPAN, cpanm, etc.) • soon to be a hosted service • http://www.stratopan.com

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Pinto

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Pinto • Manages and installs modules into a “repository”

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Pinto • Manages and installs modules into a “repository” • separate from you VCS and (possibly) non-local

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Pinto • Manages and installs modules into a “repository” • separate from you VCS and (possibly) non-local • Repositories can be copied into “stacks”

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Pinto • Manages and installs modules into a “repository” • separate from you VCS and (possibly) non-local • Repositories can be copied into “stacks” • similar to branching in VCS and good for testing upgrades

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Pinto • Manages and installs modules into a “repository” • separate from you VCS and (possibly) non-local • Repositories can be copied into “stacks” • similar to branching in VCS and good for testing upgrades • modules can be “pinned”

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Pinto • Manages and installs modules into a “repository” • separate from you VCS and (possibly) non-local • Repositories can be copied into “stacks” • similar to branching in VCS and good for testing upgrades • modules can be “pinned” • prevents all upgrade (even accidental upgrade)

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Pinto • Manages and installs modules into a “repository” • separate from you VCS and (possibly) non-local • Repositories can be copied into “stacks” • similar to branching in VCS and good for testing upgrades • modules can be “pinned” • prevents all upgrade (even accidental upgrade) • can also manage non-CPAN dependencies

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Pinto • Manages and installs modules into a “repository” • separate from you VCS and (possibly) non-local • Repositories can be copied into “stacks” • similar to branching in VCS and good for testing upgrades • modules can be “pinned” • prevents all upgrade (even accidental upgrade) • can also manage non-CPAN dependencies • useful if you structure your application like a CPAN distro