import-checker: resolve relative imports
"from . import X" will produce an ImportFrom ast node with .module =
None. This resulted in a run-time error from attempting to concatenate
None with a str.
Another problem with relative imports is that the prefix may be dynamic
based on the "level" attribute of the import. e.g. "from ." has level 1
and "from .." has level 2.
We teach the "fromlocal" function how to cope with relative imports.
Where appropriate, the consumer passes in the level so relative module
names may be resolved properly.
gethgversion() {
make clean
make local || make local PURE=--pure
HG="$PWD/hg"
$HG version > /dev/null || { echo 'abort: hg version failed!'; exit 1 ; }
hgversion=`$HG version | sed -ne 's/.*(version \(.*\))$/\1/p'`
if echo $hgversion | grep -- '-' > /dev/null 2>&1; then
# nightly build case, version is like 1.3.1+250-20b91f91f9ca
version=`echo $hgversion | cut -d- -f1`
release=`echo $hgversion | cut -d- -f2 | sed -e 's/+.*//'`
else
# official tag, version is like 1.3.1
version=`echo $hgversion | sed -e 's/+.*//'`
release='0'
fi
}