Stopped using pkg_resources, as it's deprecated. #432
Merged
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The replacement is the
packaging
module, but it's not exactly the same. It provides aRequirement
object but it's different from the previous one, and there's noDependency
so to match versions we need to play withRequirement.specifiers
.The
VCSDependency
object we had grew in complexity, as it needs a newVCSSpecifier
to mimic the newRequirement
. Similarly, I added aNameVerDependency
to be able to compare objects with name and version.While working on this I found that in
check_pypi_updates
we were comparing versions as strings ("2.3" is greater than "1.3", but it is smaller than "10.2"... and if you compare the strings that is broken). I added a test for this and fixed it by usingpackaging.Version
which compare as they should.Finally, I removed all traces of "setuptools" and "pkg_resources" as a dependency needed to run.