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python-utils-r1.eclass: _python_set_impls, add integrity check

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Add integrity check for multi-inherits, i.e. ensure that PYTHON_COMPAT
has not changed between successive calls to _python_set_impls. If it did
(e.g. because of eclass+ebuild setting different values), then we abort
not to give surprising results to the user.
This commit is contained in:
Michał Górny
2017-03-08 08:35:43 +01:00
parent 2980579f58
commit d2fb3f82e9
1 changed files with 19 additions and 3 deletions
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eclass/python-utils-r1.eclass
+19 -3
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@@ -128,9 +128,25 @@ _python_set_impls() {
die "No supported implementation in PYTHON_COMPAT."
fi
_PYTHON_SUPPORTED_IMPLS=( "${supp[@]}" )
_PYTHON_UNSUPPORTED_IMPLS=( "${unsupp[@]}" )
readonly _PYTHON_SUPPORTED_IMPLS _PYTHON_UNSUPPORTED_IMPLS
if [[ ${_PYTHON_SUPPORTED_IMPLS[@]} ]]; then
# set once already, verify integrity
if [[ ${_PYTHON_SUPPORTED_IMPLS[@]} != ${supp[@]} ]]; then
eerror "Supported impls (PYTHON_COMPAT) changed between inherits!"
eerror "Before: ${_PYTHON_SUPPORTED_IMPLS[*]}"
eerror "Now : ${supp[*]}"
die "_PYTHON_SUPPORTED_IMPLS integrity check failed"
fi
if [[ ${_PYTHON_UNSUPPORTED_IMPLS[@]} != ${unsupp[@]} ]]; then
eerror "Unsupported impls changed between inherits!"
eerror "Before: ${_PYTHON_UNSUPPORTED_IMPLS[*]}"
eerror "Now : ${unsupp[*]}"
die "_PYTHON_UNSUPPORTED_IMPLS integrity check failed"
fi
else
_PYTHON_SUPPORTED_IMPLS=( "${supp[@]}" )
_PYTHON_UNSUPPORTED_IMPLS=( "${unsupp[@]}" )
readonly _PYTHON_SUPPORTED_IMPLS _PYTHON_UNSUPPORTED_IMPLS
fi
}
# @ECLASS-VARIABLE: PYTHON