Comparing Composer - Speaker Deck

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Comparing Composer Things you might not know about composer

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Hi, my name is Hannes.

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madewithlove

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MongoDB Belgium

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• Developer • madewithlove • MongoDB Belgium • php.gent ABOUT ME

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Comparing composer

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1. Dependency managers 2. Composer 3. Improve ecosystem

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1. Dependency  managers

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DEPENDENCY MANAGERS

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DEPENDENCY MANAGERS - PACKAGE.XML 5.1.0 6.0.0 6.0.0 1.4.0b1 …

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DEPENDENCY MANAGERS - PECL “platform requirements”

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DEPENDENCY MANAGERS apt

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DEPENDENCY MANAGERS - APT PACKAGES … Package: mongodb-org-server Version: 2.6.7 Installed-Size: 23291 Depends: libc6 (>= 2.3.2), libgcc1 (>= 1:4.1 …

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DEPENDENCY MANAGERS - APT (Peer) Dependencies

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DEPENDENCY MANAGERS - APT The following packages have unmet dependencies: package1 : Depends: package2 (>= 1.8) but 1.7.5-1ubuntu1 is to be installed

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DEPENDENCY MANAGERS pip

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DEPENDENCY MANAGERS - PIP pip freeze > requirements.txt

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DEPENDENCY MANAGERS - PIP No dependency resolver

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DEPENDENCY MANAGERS Bundler

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DEPENDENCY MANAGERS - BUNDLER Gemfile Gemfile.lock

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DEPENDENCY MANAGERS - BUNDLER Dependency tree resolving

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DEPENDENCY MANAGERS - BUNDLER Separate Lock file

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DEPENDENCY MANAGERS npm

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DEPENDENCY MANAGERS - NPM node_modules/gulp/node_modules/…

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DEPENDENCY MANAGERS - NPM Hierarchical installation

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DEPENDENCY MANAGERS - NPM require.js

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DEPENDENCY MANAGERS - NPM No locking needed

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DEPENDENCY MANAGERS - NPM v3.0: only hierarchical when conflicts

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DEPENDENCY MANAGERS - RECAP Platform requirements Dependencies Resolving + Separate Lock files Hierarchical

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2. Composer

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COMPOSER Too basic: Version constraints Semver(.org)

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COMPOSER --(no-)dev

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COMPOSER - DEV { "require-dev": {} "autoload-dev": {} }

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COMPOSER - DEV Not for my production Not for other people’s production

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COMPOSER - GLOBAL composer global require

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COMPOSER - SCRIPTS { "scripts": {…} }

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COMPOSER - SCRIPTS pre-install-cmd post-install-cmd pre-update-cmd post-update-cmd post-create-project-cmd

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COMPOSER - SCRIPTS php-cs-fixer src/ --level=symfony --fixers=short_array_syntax

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COMPOSER - SCRIPTS { "scripts": { "fix-cs": "php-cs-fixer src/ — } }

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COMPOSER - SCRIPTS { "scripts": { "fix-cs": "php-cs-fixer src/ — "misc": "MyClass::method" } }

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COMPOSER - SCRIPTS { "config": { "bin-dir": "vendor/bin" }, "scripts": {…} }

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COMPOSER Virtual packages

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COMPOSER - VIRTUAL PACKAGES “Depend on abstractions”

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COMPOSER - VIRTUAL PACKAGES "require": "psr/log-implementation" "provide": "psr/log-implementation"

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COMPOSER - VIRTUAL PACKAGES "psr/cache-implementation" "psr/http-message"

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COMPOSER - VIRTUAL PACKAGES container-interop

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COMPOSER - VIRTUAL PACKAGES Would be useful streams store/repository event dispatcher

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COMPOSER More keywords: replace conflict suggest

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COMPOSER - REPLACE Replace subsplit packages: symfony/symfony zendframework/zendframework laravel/framework

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COMPOSER - CONFLICTS conflict means: “Do not install together with”

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COMPOSER - SUGGEST Suggest used for: PHP extensions (eg: for extra speed) Adapter packages

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COMPOSER - OTHER STUFF --prefer-lowest --ignore-platform-reqs --prefer-source --prefer-dist .gitattributes

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COMPOSER - RECAP dev scripts virtual packages subsplits conflict suggest

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3. Improve ecosystem

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SemVer IMPROVE ECOSYSTEM - SEMVER

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~1.4: >=1.4.0 and < 2.0.0 ~1.4.3: >=1.4.3 and < 1.5.0 ^1.4.3: >=1.4.3 and < 2.0.0 IMPROVE ECOSYSTEM - SEMVER

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If all packages - Use Semver - Correctly define version constraints IMPROVE ECOSYSTEM - SEMVER

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“Depend on abstractions” IMPROVE ECOSYSTEM - ABSTRACTIONS

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PSR interface packages Virtual packages IMPROVE ECOSYSTEM - ABSTRACTIONS

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Adapter packages IMPROVE ECOSYSTEM - ABSTRACTIONS

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Looking at Flysystem IMPROVE ECOSYSTEM - ABSTRACTIONS

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Flysystem contains AdapterInterface IMPROVE ECOSYSTEM - ABSTRACTIONS

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class AwsS3Adapter implements AdapterInterface IMPROVE ECOSYSTEM - ABSTRACTIONS

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Flysystem Gaufrette Omnipay … IMPROVE ECOSYSTEM - ABSTRACTIONS

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“Depend on High level package, Let others decide the adapter” IMPROVE ECOSYSTEM - ABSTRACTIONS

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http:/ /php-and-symfony.matthiasnoback.nl/2014/10/ composer-provide-and-dependency-inversion/ http:/ /php-and-symfony.matthiasnoback.nl/2014/04/ theres-no-such-thing-as-an-optional-dependency/ IMPROVE ECOSYSTEM - ABSTRACTIONS

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Follow Semver “Depend on abstractions” IMPROVE ECOSYSTEM - RECAP

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RECAP 1. Dependency managers 2. Composer 3. Improve ecosystem

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Questions?

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Thank you! https:/ /joind.in/13680 @hannesvdvreken

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• http:/ /mwl.be • http:/ /getcomposer.org/doc • http:/ /slides.seld.be/?file=2015-02-19+Composer+... • https:/ /hannesvdvreken.com/2015/01/14/gitattr... • https:/ /hannesvdvreken.com/2015/01/18/comp... • https:/ /hannesvdvreken.com/2015/01/28/autol... • https:/ /packagist.org/search/?q=psr%2Flog • https:/ /leanpub.com/principles-of-package-design • http:/ /php-and-symfony.matthiasnoback.nl/2014/... • http:/ /php-and-symfony.matthiasnoback.nl/2014/... REFERENCES