Fix editable installations for Poetry packages #2400
Merged
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Pull Request Check List
Followup to #2360
Basically, editable installs for transitive packages failed due to the
build_script
attribute not being available on standardPackage
objects.Also, the generated scripts weren't correct if the callable was a module attribute.
Finally, the loading of editable installed packages was not correct and they weren't marked as being directory dependencies which would lead to them being always updated when installing.
Note that we will rely on PEP 610 in the future for detection of such packages.