comparison setup.py @ 44080:4e05272dd681

packaging: leverage os.path.relpath() in setup.py

`os.path.relpath()` has existed since Python 2.6, so we can safely use
it. This fixes a bug in the current code when the common prefix is "/"
(in which case `uplevel` would be one less than it should).

Differential Revision: https://phab.mercurial-scm.org/D7875

44079:191a461d6be6

        ):
            # can't make relative paths from one drive to another, so use an
            # absolute path instead
            libdir = self.install_lib
        else:
            common = os.path.commonprefix((self.install_dir, self.install_lib))
            rest = self.install_dir[len(common) :]
            uplevel = len([n for n in os.path.split(rest) if n])

            libdir = uplevel * ('..' + os.sep) + self.install_lib[len(common) :]

        for outfile in self.outfiles:
            with open(outfile, 'rb') as fp:
                data = fp.read()

44080:4e05272dd681

        ):
            # can't make relative paths from one drive to another, so use an
            # absolute path instead
            libdir = self.install_lib
        else:
            libdir = os.path.relpath(self.install_lib, self.install_dir)

        for outfile in self.outfiles:
            with open(outfile, 'rb') as fp:
                data = fp.read()