py38-dns-lexicon does not install lexicon executable correctly

[LucaFilipozzi (Luca Filipozzi)]

The symlink is correct:

/opt/local/bin/lexicon-3.8 -> /opt/local/Library/Frameworks/Python.framework/Versions/3.8/bin/lexicon

but the target is not installed with executable bit set:

$ pwd /opt/local/Library/Frameworks/Python.framework/Versions/3.8/bin n$ ls -l lexicon -rw-r--r-- 1 root wheel 267 Jan 3 04:57 lexicon

Finally, the package invite the user to symlink lexicon to the appropriate version

port select --set lexicon lexicon-3.8