[aur-dev] AUR 4 and licensing

[David Manouchehri]

> Showing it during a push would be flawed because then it's too late for
them not to agree to it.

A Git pre-commit hook on the server side should be fine. On the web side of
the AUR, a list of accepted ToS users should be kept, and then on every
push check to see if they've been added. Reminding users about the GPL on a
push probably isn't a bad idea either.

I can't remember how to get the current commiter's email address, but the
hook would probably look something like this.

```
if [ ! -f /tmp/userlist_accepted/$git_email ]; then
  printf "Please visit https://aur.archlinux.org/ and accept the terms of
service first.\n"
  exit 1
done

printf "All content posted to the AUR must be licensed under GPLv3.\n"
```

If maintaining another list of private email addresses is too much of a
pain, just hash them and the list could be public without any privacy
concerns (assuming it isn't md5sum or something equally weak).