We had an issue with an ansible playbook using vagrant - where formerly php-yaml was installing fine.
Then, we were getting issues with our PHP repo:
[vagrant@localhost ~]$ sudo yum install php-yaml
...
Error: Package: php-pecl-yaml-1.1.1-5.el6.x86_64 (epel)
Requires: php(api) = 20090626
Installed: php-common-5.5.16-1.el6.remi.2.x86_64 (@remi-php55)
php(api) = 20121113-64
Available: php-common-5.3.3-26.el6.x86_64 (base)
php(api) = 20090626
Available: php-common-5.3.3-27.el6_5.x86_64 (updates)
php(api) = 20090626
Available: php-common-5.3.3-27.el6_5.1.x86_64 (updates)
php(api) = 20090626
Available: php-common-5.3.3-27.el6_5.2.x86_64 (updates)
php(api) = 20090626
Available: php-common-5.4.33-1.el6.remi.x86_64 (remi)
php(api) = 20100412-x86-64
Available: php-common-5.4.33-2.el6.remi.x86_64 (remi)
php(api) = 20100412-x86-64
Available: php-common-5.5.17-1.el6.remi.x86_64 (remi-php55)
php(api) = 20121113-64
Available: php-common-5.5.17-2.el6.remi.x86_64 (remi-php55)
php(api) = 20121113-64
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
It might not be the most pretty - but this was our solution:
We needed epel to get libyaml but we did not want epel with php-pecl-yaml
This allowed us to continue to use php-extension instead of php55-php-extension