NAME
Carmel - CPAN Artifact Repository Manager
SYNOPSIS
# Run with a directory with cpanfile
carmel install
# Manually pull a module if you don't have it
carmel inject
[email protected] [email protected]
# list all the modules to be loaded
carmel list
# list all the modules in a tree
carmel tree
# show a location where a module is installed
carmel show Plack
# Runs your perl script with modules from artifacts
carmel exec perl ...
# Requires all your modules in cpanfile in one shot
carmel exec perl -e 'use Carmel::Preload;'
# Roll out the currently selected modules into ./local
carmel rollout
# package modules tarballs and index into ./vendor/cache
carmel package
# use Carmel packages inside a script (without carmel exec)
perl -e 'use Carmel::Setup; ...'
# prints export PATH=... etc for shell scripting
carmel export
# find a module in a repository
carmel find DBI
# find a module matching the version query
carmel find Plack ">= 1.0000, < 1.1000"
DESCRIPTION
THIS IS EXPERIMENTAL!
Carmel is yet another CPAN module manager.
Unlike traditional CPAN module installer, Carmel keeps the build of
your dependencies in a central repository, then select the library
paths to include upon runtime.
HOW IT WORKS
Carmel will keep the build directory (artifacts) after a cpanm
installation in a repository, which defaults to
$HOME/.carmel/{version}-{archname}/builds, and your directory structure
would look like:
$HOME/.carmel/5.20.1-darwin-2level/builds
Plack-1.0033/
blib/
arch/
lib/
URI-1.64/
blib/
arch/
lib/
URI-1.63/
blib/
arch/
lib/
Carmel scans this directory and creates the mapping of which version of
any package belongs to which build directory.
Given the list of modules and requirements using cpanfile, Carmel lists
all the build directories and .pm files you need, and then prepend the
mappings of these files in the @INC hook.
For example, if you have:
requires 'URI', '== 1.63';
Carmel finds URI package with $VERSION set to 1.63 in URI-1.63/blib/lib
so it will let perl load URI.pm from that directory.
Instead, if you have:
requires 'URI';
it will find the latest that satisfies the (empty) requirement, which
is in URI-1.64/blib/lib.
The fact that it prefers the latest, rather than the oldest, might
change in the future once a mechanism to make snapshot is introduced,
since you will not like to upgrade one of the dependencies
unexpectedly.
You have a choice to execute a subprocess from Carmel, by using the
exec sub command. If you prefer a fine grained control, you can also
use env or export command to integrate with your own shell script
wrapper.
COMMUNITY
https://github.com/miyagawa/Carmel
Code repository, Wiki and Issue Tracker
irc://irc.perl.org/#cpanm
IRC chat room
AUTHOR
Tatsuhiko Miyagawa <
[email protected]>
COPYRIGHT
Copyright 2015- Tatsuhiko Miyagawa
LICENSE
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
SEE ALSO
App::cpanminus Carton
