Composer conflict phpmentors/workflower-bundle 1.3.*

[ArjandeRuyter]

when executing: composer require phpmentors/workflower "1.4.*" the following problem occurs.

Problem 1
- Installation request for phpmentors/workflower-bundle 1.4.* -> satisfiable by phpmentors/workflower-bundle[v1.4.0].
- Conclusion: remove symfony/cache v5.1.3
- Conclusion: don't install symfony/cache v5.1.3

symfony/cache v5.1.3 is required by phpmentors/workflower (v1.4.1)

[iteman]

This issue could not be reproduced in PHP 7.4.7 on Windows 10 as the following:

$ php ~/bin/composer.phar require phpmentors/workflower-bundle "1.4.*"
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 39 installs, 0 updates, 0 removals
  - Installing paragonie/random_compat (v9.99.99): Downloading (100%)
  - Installing symfony/polyfill-php70 (v1.18.1): Downloading (100%)
  - Installing psr/log (1.1.3): Downloading (100%)
  - Installing symfony/polyfill-php80 (v1.18.1): Downloading (100%)
  - Installing symfony/polyfill-ctype (v1.18.1): Downloading (100%)
  - Installing symfony/polyfill-mbstring (v1.18.1): Downloading (100%)
  - Installing symfony/deprecation-contracts (v2.1.3): Downloading (100%)
  - Installing symfony/polyfill-php72 (v1.18.1): Downloading (100%)
  - Installing symfony/polyfill-intl-normalizer (v1.18.1): Downloading (100%)
  - Installing symfony/polyfill-intl-idn (v1.18.1): Downloading (100%)
  - Installing symfony/mime (v5.1.3): Downloading (100%)
  - Installing symfony/http-foundation (v4.4.11): Downloading (100%)
  - Installing symfony/event-dispatcher-contracts (v1.1.9): Downloading (100%)
  - Installing psr/container (1.0.0): Downloading (100%)
  - Installing psr/cache (1.0.1): Downloading (100%)
  - Installing symfony/event-dispatcher (v4.4.11): Downloading (100%)
  - Installing symfony/debug (v4.4.11): Downloading (100%)
  - Installing symfony/polyfill-util (v1.18.1): Downloading (100%)
  - Installing symfony/polyfill-php56 (v1.18.1): Downloading (100%)
  - Installing symfony/http-kernel (v3.4.43): Downloading (100%)
  - Installing symfony/service-contracts (v1.1.9): Downloading (100%)
  - Installing symfony/dependency-injection (v3.4.43): Downloading (100%)
  - Installing symfony/polyfill-intl-grapheme (v1.18.1): Downloading (100%)
  - Installing symfony/string (v5.1.3): Downloading (100%)
  - Installing symfony/inflector (v5.1.3): Downloading (100%)
  - Installing symfony/property-access (v4.4.11): Downloading (100%)
  - Installing symfony/security (v3.4.43): Downloading (100%)
  - Installing symfony/filesystem (v4.4.11): Downloading (100%)
  - Installing symfony/config (v3.4.43): Downloading (100%)
  - Installing symfony/security-bundle (v3.4.43): Downloading (100%)
  - Installing symfony/finder (v3.4.43): Downloading (100%)
  - Installing symfony/var-exporter (v4.4.11): Downloading (100%)
  - Installing symfony/cache-contracts (v1.1.9): Downloading (100%)
  - Installing symfony/cache (v4.3.11): Downloading (100%)
  - Installing symfony/expression-language (v4.4.11): Downloading (100%)
  - Installing phpmentors/domain-kata (v1.4.0): Downloading (100%)
  - Installing piece/stagehand-fsm (v2.6.0): Downloading (100%)
  - Installing phpmentors/workflower (v1.4.1): Downloading (100%)
  - Installing phpmentors/workflower-bundle (v1.4.0): Downloading (100%)
paragonie/random_compat suggests installing ext-libsodium (Provides a modern crypto API that can be used to generate random bytes.)
symfony/polyfill-mbstring suggests installing ext-mbstring (For best performance)
symfony/polyfill-intl-normalizer suggests installing ext-intl (For best performance)
symfony/polyfill-intl-idn suggests installing ext-intl (For best performance)
symfony/event-dispatcher-contracts suggests installing psr/event-dispatcher
symfony/http-kernel suggests installing symfony/browser-kit
symfony/http-kernel suggests installing symfony/console
symfony/http-kernel suggests installing symfony/var-dumper
symfony/service-contracts suggests installing symfony/service-implementation
symfony/dependency-injection suggests installing symfony/yaml
symfony/dependency-injection suggests installing symfony/proxy-manager-bridge (Generate service proxies to lazy load them)
symfony/polyfill-intl-grapheme suggests installing ext-intl (For best performance)
symfony/security suggests installing symfony/form
symfony/security suggests installing symfony/validator (For using the user password constraint)
symfony/security suggests installing symfony/routing (For using the HttpUtils class to create sub-requests, redirect the user, and match URLs)
symfony/security suggests installing symfony/ldap (For using the LDAP user and authentication providers)
symfony/config suggests installing symfony/yaml (To use the yaml reference dumper)
symfony/security-bundle suggests installing symfony/security-acl (For using the ACL functionality of this bundle)
phpmentors/workflower-bundle suggests installing doctrine/orm (>= 2.4.0 provides transparent serialization/deserialization support for entities with Doctrine ORM)
phpmentors/workflower-bundle suggests installing symfony/doctrine-bridge (>=2.8.0 provides transparent serialization/deserialization support for entities with Doctrine ORM)
Writing lock file
Generating autoload files
30 packages you are using are looking for funding.
Use the `composer fund` command to find out more!

Let me know how can I reproduce this?

[ArjandeRuyter]

PHP 7.2.26 (cli) (built: Dec 28 2019 22:17:07) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.2.26, Copyright (c) 1999-2018, by Zend Technologies
with Xdebug v2.9.1, Copyright (c) 2002-2020, by Derick Rethans
with blackfire v1.30.0~linux-x64-non_zts72, https://blackfire.io, by Blackfire

composer require phpmentors/workflower-bundle "1.4.*"

`./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Installation request for phpmentors/workflower-bundle 1.4.* -> satisfiable by phpmentors/workflower-bundle[v1.4.0].
- Conclusion: remove symfony/cache v5.1.3
- Conclusion: don't install symfony/cache v5.1.3
- phpmentors/workflower-bundle v1.4.0 requires symfony/http-kernel ~2.8 || ~3.0 -> satisfiable by symfony/http-kernel[v2.8.0, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.16, v2.8.17, v2.8.18, v2.8.19, v2.8.2, v2.8.20, v2.8.21, v2.8.22, v2.8.23, v2.8.24, v2.8.25, v2.8.26, v2.8.27, v2.8.28, v2.8.29, v2.8.3, v2.8.30, v2.8.31, v2.8.32, v2.8.33, v2.8.34, v2.8.35, v2.8.36, v2.8.37, v2.8.38, v2.8.39, v2.8.4, v2.8.40, v2.8.41, v2.8.42, v2.8.43, v2.8.44, v2.8.45, v2.8.46, v2.8.47, v2.8.48, v2.8.49, v2.8.5, v2.8.50, v2.8.51, v2.8.52, v2.8.6, v2.8.7, v2.8.8, v2.8.9, v3.0.0, v3.0.1, v3.0.2, v3.0.3, v3.0.4, v3.0.5, v3.0.6, v3.0.7, v3.0.8, v3.0.9, v3.1.0, v3.1.1, v3.1.10, v3.1.2, v3.1.3, v3.1.4, v3.1.5, v3.1.6, v3.1.7, v3.1.8, v3.1.9, v3.2.0, v3.2.1, v3.2.10, v3.2.11, v3.2.12, v3.2.13, v3.2.14, v3.2.2, v3.2.3, v3.2.4, v3.2.5, v3.2.6, v3.2.7, v3.2.8, v3.2.9, v3.3.0, v3.3.1, v3.3.10, v3.3.11, v3.3.12, v3.3.13, v3.3.14, v3.3.15, v3.3.16, v3.3.17, v3.3.18, v3.3.2, v3.3.3, v3.3.4, v3.3.5, v3.3.6, v3.3.7, v3.3.8, v3.3.9, v3.4.0, v3.4.1, v3.4.10, v3.4.11, v3.4.12, v3.4.13, v3.4.14, v3.4.15, v3.4.16, v3.4.17, v3.4.18, v3.4.19, v3.4.2, v3.4.20, v3.4.21, v3.4.22, v3.4.23, v3.4.24, v3.4.25, v3.4.26, v3.4.27, v3.4.28, v3.4.29, v3.4.3, v3.4.30, v3.4.31, v3.4.32, v3.4.33, v3.4.34, v3.4.35, v3.4.36, v3.4.37, v3.4.38, v3.4.39, v3.4.4, v3.4.40, v3.4.41, v3.4.42, v3.4.43, v3.4.5, v3.4.6, v3.4.7, v3.4.8, v3.4.9].
- symfony/http-kernel v2.8.0 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.1 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.10 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.11 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.12 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.13 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.14 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.15 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.16 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.17 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.18 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.19 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.2 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.20 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.21 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.22 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.23 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.24 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.25 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.26 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.27 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.28 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.29 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.3 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.30 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.31 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.32 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.33 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.34 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.35 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.36 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.37 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.38 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.39 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.4 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.40 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.41 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.42 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.43 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.44 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.45 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.46 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.47 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.48 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.49 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.5 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.50 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.51 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.52 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.6 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.7 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.8 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v2.8.9 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.0 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.1 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.2 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.3 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.4 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.5 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.6 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.7 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.8 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.0.9 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.0 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.1 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.10 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.2 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.3 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.4 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.5 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.6 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.7 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.8 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.1.9 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.0 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.1 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.10 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.11 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.12 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.13 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.14 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.2 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.3 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.4 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.5 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.6 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.7 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.8 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.2.9 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.0 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.1 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.10 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.11 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.12 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.13 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.14 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.15 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.16 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.17 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.18 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.2 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.3 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.4 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.5 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.6 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.7 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.8 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.3.9 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.0 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.1 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.10 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.11 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.12 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.13 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.14 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.15 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.16 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.17 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.18 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.19 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.2 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.20 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.21 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.22 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.23 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.24 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.25 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.26 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.27 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.28 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.29 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.3 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.30 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.31 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.32 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.33 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.34 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.35 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.36 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.37 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.38 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.39 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.4 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.40 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.41 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.42 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.43 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.5 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.6 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.7 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.8 conflicts with symfony/cache[v5.1.3].
- symfony/http-kernel v3.4.9 conflicts with symfony/cache[v5.1.3].
- Installation request for symfony/cache (locked at v5.1.3) -> satisfiable by symfony/cache[v5.1.3].

Installation failed, reverting ./composer.json to its original content.
`

[iteman]

Two questions:

1. Do you use an existing composer.json?
2. What is the package that requires symfony/cache v5.1.3?

[ArjandeRuyter]

1. yes, I am trying to use workflower with CodeIgniter 4
2. phpmentors/workflower "1.4.*" requires symfony/cache

composer require phpmentors/workflower "1.4.*"
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 13 installs, 0 updates, 0 removals

• Installing psr/container (1.0.0): Loading from cache
• Installing symfony/service-contracts (v2.1.3): Loading from cache
• Installing psr/cache (1.0.1): Loading from cache
• Installing symfony/polyfill-php80 (v1.18.1): Loading from cache
• Installing symfony/var-exporter (v5.1.3): Loading from cache
• Installing symfony/cache-contracts (v2.1.3): Loading from cache
• Installing symfony/cache (v5.1.3): Loading from cache
• Installing symfony/expression-language (v4.4.11): Loading from cache
• Installing symfony/event-dispatcher-contracts (v1.1.9): Loading from cache
• Installing symfony/event-dispatcher (v4.4.11): Loading from cache
• Installing phpmentors/domain-kata (v1.4.0): Loading from cache
• Installing piece/stagehand-fsm (v2.6.0): Loading from cache
• Installing phpmentors/workflower (v1.4.1): Loading from cache
  symfony/service-contracts suggests installing symfony/service-implementation
  symfony/event-dispatcher-contracts suggests installing psr/event-dispatcher
  symfony/event-dispatcher suggests installing symfony/dependency-injection
  symfony/event-dispatcher suggests installing symfony/http-kernel
  Writing lock file
  Generating autoload files

[iteman]

In my enviroment, symfony/cache is required by symfony/expression-language directly as follows:

$ php ~/bin/composer.phar depends --tree symfony/cache
symfony/cache v4.3.11 Symfony Cache component with PSR-6, PSR-16, and tags
└──symfony/expression-language v4.4.11 (requires symfony/cache ^3.4|^4.0|^5.0)
   └──phpmentors/workflower v1.4.1 (requires symfony/expression-language ~2.8|~3.0|~4.0)
      └──phpmentors/workflower-bundle v1.4.0 (requires phpmentors/workflower ~1.2)
         └──__root__ (requires phpmentors/workflower-bundle 1.4.*)

This may be resolved when workflower-bundle supports Symfony 5.x.
I will add support Symfony 5 on the master branch soon.

[ArjandeRuyter]

On https://github.com/phpmentors-jp/workflower/blob/master/docs/quick-start-guide.md it says:

Installing Workflower and PHPMentorsWorkflowerBundle
First, we will use Composer to install Workflower and PHPMentorsWorkflowerBundle as project dependent packages:

$ composer require phpmentors/workflower "1.3."
$ composer require phpmentors/workflower-bundle "1.3."

So I presumed to load 1.4 versions like that as well but if I only perform composer require phpmentors/workflower-bundle "1.4.*" I also installs phpmentors/workflower (v1.4.1) without the conflict.

`
composer require phpmentors/workflower-bundle "1.4.*"
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 37 installs, 0 updates, 0 removals

• Installing paragonie/random_compat (v9.99.99): Downloading (100%)
• Installing symfony/polyfill-php70 (v1.18.1): Downloading (100%)
• Installing symfony/polyfill-php80 (v1.18.1): Loading from cache
• Installing symfony/polyfill-mbstring (v1.18.1): Downloading (100%)
• Installing symfony/deprecation-contracts (v2.1.3): Downloading (100%)
• Installing symfony/polyfill-php72 (v1.18.1): Downloading (100%)
• Installing symfony/polyfill-intl-normalizer (v1.18.1): Downloading (100%)
• Installing symfony/polyfill-intl-idn (v1.18.1): Downloading (100%)
• Installing symfony/mime (v5.1.3): Downloading (100%)
• Installing symfony/http-foundation (v4.4.11): Downloading (100%)
• Installing symfony/event-dispatcher-contracts (v1.1.9): Loading from cache
• Installing psr/container (1.0.0): Loading from cache
• Installing psr/cache (1.0.1): Loading from cache
• Installing symfony/event-dispatcher (v4.4.11): Loading from cache
• Installing symfony/debug (v4.4.11): Downloading (100%)
• Installing symfony/polyfill-util (v1.18.1): Downloading (100%)
• Installing symfony/polyfill-php56 (v1.18.1): Downloading (100%)
• Installing symfony/http-kernel (v3.4.43): Downloading (100%)
• Installing symfony/service-contracts (v1.1.9): Downloading (100%)
• Installing symfony/dependency-injection (v3.4.43): Downloading (100%)
• Installing symfony/polyfill-intl-grapheme (v1.18.1): Downloading (100%)
• Installing symfony/string (v5.1.3): Downloading (100%)
• Installing symfony/inflector (v5.1.3): Downloading (100%)
• Installing symfony/property-access (v4.4.11): Downloading (100%)
• Installing symfony/security (v3.4.43): Downloading (100%)
• Installing symfony/filesystem (v4.4.11): Downloading (100%)
• Installing symfony/config (v3.4.43): Downloading (100%)
• Installing symfony/security-bundle (v3.4.43): Downloading (100%)
• Installing symfony/finder (v3.4.43): Downloading (100%)
• Installing symfony/var-exporter (v4.4.11): Downloading (100%)
• Installing symfony/cache-contracts (v1.1.9): Downloading (100%)
• Installing symfony/cache (v4.3.11): Downloading (100%)
• Installing symfony/expression-language (v4.4.11): Loading from cache
• Installing phpmentors/domain-kata (v1.4.0): Loading from cache
• Installing piece/stagehand-fsm (v2.6.0): Loading from cache
• Installing phpmentors/workflower (v1.4.1): Loading from cache
• Installing phpmentors/workflower-bundle (v1.4.0): Downloading (100%)
  paragonie/random_compat suggests installing ext-libsodium (Provides a modern crypto API that can be used to generate random bytes.)
  symfony/event-dispatcher-contracts suggests installing psr/event-dispatcher
  symfony/http-kernel suggests installing symfony/browser-kit
  symfony/http-kernel suggests installing symfony/console
  symfony/http-kernel suggests installing symfony/var-dumper
  symfony/service-contracts suggests installing symfony/service-implementation
  symfony/dependency-injection suggests installing symfony/yaml
  symfony/dependency-injection suggests installing symfony/proxy-manager-bridge (Generate service proxies to lazy load them)
  symfony/security suggests installing symfony/form
  symfony/security suggests installing symfony/validator (For using the user password constraint)
  symfony/security suggests installing symfony/routing (For using the HttpUtils class to create sub-requests, redirect the user, and match URLs)
  symfony/security suggests installing symfony/ldap (For using the LDAP user and authentication providers)
  symfony/config suggests installing symfony/yaml (To use the yaml reference dumper)
  symfony/security-bundle suggests installing symfony/security-acl (For using the ACL functionality of this bundle)
  phpmentors/workflower-bundle suggests installing doctrine/orm (>= 2.4.0 provides transparent serialization/deserialization support for entities with Doctrine ORM)
  phpmentors/workflower-bundle suggests installing symfony/doctrine-bridge (>=2.8.0 provides transparent serialization/deserialization support for entities with Doctrine ORM)
  Writing lock file
  Generating autoload files
  Generated autoload files containing 590 classes

`

composer depends --tree symfony/cache symfony/cache v4.3.11 Symfony Cache component with PSR-6, PSR-16, and tags └──symfony/expression-language v4.4.11 (requires symfony/cache ^3.4|^4.0|^5.0) └──phpmentors/workflower v1.4.1 (requires symfony/expression-language ~2.8|~3.0|~4.0) └──phpmentors/workflower-bundle v1.4.0 (requires phpmentors/workflower ~1.2) └──codeigniter4/appstarter (requires phpmentors/workflower-bundle 1.4.*)

Thanks for your help!!!!!

[iteman]

Hmm, I'll check the quick start guide.