Magento installation failed [/vagrant/scripts/guest/m-reinstall]

[efmitchell]

Mac OS 10.13.1, all listed requirements installed.

Whilst running init_project, get the error:

 Magento installation failed. [/vagrant/scripts/guest/m-reinstall]
[2018-10-07 11:11:36] >  PHP Parse error:  syntax error, unexpected '?', expecting variable (T_VARIABLE) in /Users/elliotmitchell/Code/vagrant-magento/magento2ce/lib/internal/Magento/Framework/Filesystem/Directory/Write.php on line

When I run with error logging I also get the below in the m-reinstall log:

`2018-10-07 12:11:33] STATUS: Deleting TestModule directories �[/Users/elliotmitchell/Code/vagrant-magento/scripts/host/m_reinstall.sh]]
[2018-10-07 11:11:35] STATUS: Killing MQ processes �[/vagrant/scripts/guest/m-reinstall]]
[2018-10-07 11:11:35] STATUS: Installing/re-installing Magento �[/vagrant/scripts/guest/m-reinstall]]
[2018-10-07 11:11:35] STATUS: > Removing Magento configuration files (env.php and config.php) �[/vagrant/scripts/guest/m-reinstall]]
[2018-10-07 11:11:35] STATUS: > Clearing Magento cache �[/vagrant/scripts/guest/m-clear-cache]]
[2018-10-07 11:11:35] STATUS: > Clearing directories containing temporary files �[/vagrant/scripts/guest/m-clear-cache]]
[2018-10-07 11:11:35] STATUS: > Dropping and creating 'magento' DB �[/vagrant/scripts/guest/m-reinstall]]
[2018-10-07 11:11:35] STATUS: > Dropping and creating 'magento_integration_tests' DB �[/vagrant/scripts/guest/m-reinstall]]
[2018-10-07 11:11:35] STATUS: > ./bin/magento setup:install --db-host=localhost --db-name=magento --db-user=root --backend-frontname=admin --base-url=http://magento2.vagrant220/ --language=en_US --timezone=America/Chicago --currency=USD --admin-lastname=Admin --admin-firstname=Admin --admin-email=[email protected] --admin-user=admin --admin-password=123123q --cleanup-database --use-rewrites=1 --amqp-host=localhost --amqp-port=5672 --amqp-user=guest --amqp-virtualhost=/ --amqp-password=guest �[/vagrant/scripts/guest/m-reinstall]]

Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) in /Users/elliotmitchell/Code/vagrant-magento/magento2ce/lib/internal/Magento/Framework/Filesystem/Directory/Write.php on line 35
[2018-10-07 11:11:36] ERROR: > Magento installation failed. �[/vagrant/scripts/guest/m-reinstall]]
[2018-10-07 12:11:36] INFO: > �[mSee details in �/Users/elliotmitchell/Code/vagrant-magento/log/m-reinstall.log�[m. For debug output set �debug:vagrant_project�[m to �1�[m in �etc/config.yaml�[m �[./m-reinstall]]
[2018-10-07 12:11:36] ERROR: > ++ which bash

• /bin/bash /Users/elliotmitchell/Code/vagrant-magento/scripts/host/m_reinstall.sh
  ++ logError
  ++ [[ -n '' ]]
  +++ cat
  ++ input=
  ++ [[ -n '' ]] �[Unknown source file]]
  error: ++ which bash
• /bin/bash /Users/elliotmitchell/Code/vagrant-magento/scripts/host/m_reinstall.sh
  ++ logError
  ++ [[ -n '' ]]
  +++ cat
  ++ input=
  ++ [[ -n '' ]]`

Phpstorm isn't running as yet.

[elburro1887]

I'm also getting this error. This is due to the following line

https://github.com/magento/magento2/blob/80469a61e061abd0001c93497a6d92296b46496b/lib/internal/Magento/Framework/Filesystem/Directory/Write.php#L35

It uses a new feature called "nullable types", which was apparently introduced in PHP 7.1

The installer only installs PHP 7.0 by default, so you need to change this to PHP 7.1

https://github.com/paliarush/magento2-vagrant-for-developers#switch-between-php-versions