Use `/usr/bin/env python3` instead of `/usr/bin/python3` in the shebang
of Python scripts. This adds support for non-standard Python interpreter
paths such as the paths used in virtualenv environments.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Add wrappers for the maintenance scripts to the setuptools
configuration.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Support for multiple servers has never been used by the official aurweb
setup and the current implementation makes it impossible to use server
URIs that contain spaces. For simplicity, change the implementation such
that only a single server is supported.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Instead of using configparser and mysql.connector directly, change all
Python scripts to use the config and db Python modules which are now
accessible from a common location.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Move the main program logic of all scripts to main() methods such that
they can be used as modules and easily be invoked by setuptools wrapper
scripts.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Instead of automatically adding packages from the official binary
repositories to the package blacklist, use the official provider list to
prevent users from uploading duplicates.

This does not only result in reduced disk usage but also has a nice
visible side effect. The error messages printed by the update hook now
look like

    error: package already provided by [community]: powerline-fonts

instead of

    error: package is blacklisted: powerline-fonts

which was confusing to most end users.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

When updating the list of packages provided by the official
repositories, also save the repository names.

Since we cannot handle versioned provides, simply strip the version
suffix and treat them as if they were not versioned.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Maintain a list of virtual provisions of packages from the official
binary package repositories. The list can be updated using the aurblup
script, e.g. via a cronjob.

This allows for adding proper links to package dependencies: If an AUR
package depends on a package from the official repositories (or on a
name provided by a package from the official repositories), add a link
to the corresponding archweb package details page. If an AUR package
depends on another AUR package (or on a name provided by another AUR
package), add a link to the corresponding aurweb package details page.
Otherwise, just display the name and do not add a link at all.

Fixes FS#46549.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

Fixes a regression introduced in commit 10ecd398

 (Restructure scripts,
2015-06-01).

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

* Move scripts/git-integration/ to git-interface/.
* Move scripts/aurblup/aurblup.py to scripts/aurblup.py.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

The AUR backend already uses several Python scripts, rewrite the aurblup
helper as well. This has several advantages:

* We can easily use the main configuration file without using any shell
  script wrappers.

* aurblup does not need to be recompiled on libalpm soname bumps.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>