/usr/share/php/PEAR/Installer/Role/Ext.xml is in php-pear 1:1.10.1+submodules+notgz-9+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | <role version="1.0">
<releasetypes>extbin</releasetypes>
<releasetypes>zendextbin</releasetypes>
<installable>1</installable>
<locationconfig>ext_dir</locationconfig>
<honorsbaseinstall>1</honorsbaseinstall>
<unusualbaseinstall />
<phpfile />
<executable />
<phpextension>1</phpextension>
<config_vars />
</role>
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