Data Files are only specified for the wheel builder:
pyproject.toml
1 2 3 4 5[tool.hatch.build.targets.wheel.shared-data] # Under /share "a-file.json" = "share/arrow_to_knee/a-file.json" # Under /etc "a-directory" = "etc/arrow_to_knee/a-directory"
Program 1 places two data files/folders under the sys.prefix: one under /share and one under /etc.