I would like to suggest introduction of support for PYTHON_DEPEND variable, which would be a better replacement for NEED_PYTHON variable. NEED_PYTHON variable does not allow to specify that e.g. only versions of Python 2 are accepted. (Eventually PYTHON_DEPEND variable will have to be set only in ebuilds of packages not supporting installation for multiple versions of Python.)
Suggested syntax:
PYTHON_DEPEND="[USE_flag?] <X[:[Y][:[Z]]]> [X[:[Y][:[Z]]]]"
<required_component>, [optional_component]
X - Major version of Python ('2' or '3') or '*'.
Y - Minimal version of Python in the form of
${major_version}.${minor_version}.
Z - Maximal version of Python in the form of
${major_version}.${minor_version}.
It will be probably very rarely used.
Examples:
PYTHON_DEPEND="2"
Dependency on any version of Python 2.
PYTHON_DEPEND="2:2.5"
Dependency on Python 2.7, 2.6 or 2.5.
PYTHON_DEPEND="*:2.6"
Dependency on Python 3.2, 3.1, 3.0, 2.7 or 2.6.
PYTHON_DEPEND="2:2.7 3:3.1"
Dependency on Python 3.2, 3.1 or 2.7.
PYTHON_DEPEND="2:2.5:2.6"
Dependency on Python 2.6 or 2.5.
PYTHON_DEPEND="2::2.6"
Dependency on Python 2.6, 2.5 or 2.4.
PYTHON_DEPEND="python? 2"
Dependency on any version of Python 2 when "python" USE flag is enabled.
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Arfrever Frehtes Taifersar Arahesis
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