如何解决Composer中的依赖版本冲突？

Question

I am currently developing a Laravel application which has following package requirements in composer.json

"phpunit/phpunit": "~5.7",
"phpspec/phpspec": "2.5.*",
"sebastian/exporter": "~2.0"

Now, problem is that phpunit requires exporter 2.0 and the package phpspec requires exporter 1.0 .

So, now these requirements are conflicting and I am unable to update the packages.

How should I resolve this conflict and install these packages?

Note: I noticed that from the composer.json of phpspec that it has requirements defined as ~1.0|~2.0 for exporter . So it should work with both but it doesn't seem to be working.

Answer 1

为了拥有支持sebastian/exporter 2.x的phpspec版本，您必须使用3.2.2或更高版本 。

Answer 2

if phpspec allows exporter ~1.0 then why don't you just use it

"phpunit/phpunit": "~5.7",
"phpspec/phpspec": "2.5.*",
"sebastian/exporter": "~1.0"