Description:
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Trying to install scream with pyrus shows us that the package.xml file does not validate:

pear2\Pyrus\Package\Exception: Invalid abstract package pecl.php.net/scream
 pear2\Pyrus\HTTPException: Download of http://pecl.php.net/get/scream-0.1.0.phar failed, file does not exist
  pear2\Pyrus\Package\Exception: Could not download from "http://pecl.php.net/get/scream-0.1.0.tgz"
   pear2\Pyrus\PackageFile\Exception: Invalid package.xml
    pear2\Pyrus\XMLParser\Exception: Invalid XML document

Using xmllint with schema validation shows us:
cweiske:~> xmllint --schema http://pear.php.net/dtd/package-2.0.xsd package.xml 
package.xml:11: element active: Schemas validity error : Element '{http://pear.php.net/dtd/package-2.0}active': [facet 'enumeration'] The value 'gopalv' is not an element of the set {'yes', 'no'}.
package.xml:11: element active: Schemas validity error : Element '{http://pear.php.net/dtd/package-2.0}active': 'gopalv' is not a valid value of the local atomic type.
package.xml:17: element active: Schemas validity error : Element '{http://pear.php.net/dtd/package-2.0}active': [facet 'enumeration'] The value 'johannes' is not an element of the set {'yes', 'no'}.
package.xml:17: element active: Schemas validity error : Element '{http://pear.php.net/dtd/package-2.0}active': 'johannes' is not a valid value of the local atomic type.
package.xml:52: element changelog: Schemas validity error : Element '{http://pear.php.net/dtd/package-2.0}changelog': Missing child element(s). Expected is ( {http://pear.php.net/dtd/package-2.0}release ).
package.xml fails to validate


This should be easily fixable.