Allows calling makechrootpkg without worrying about the architecture

 - Ensure sources are available before entering chroot
 - Bind STARTDIR and SRCDEST into the chroot read-only
 - Refactor makechrootpkg and introduce meaningful functions

Avoids copying stuff from/to the chroot as much as possible. With
VCS sources these copies can get quite expensive.

I don't think this is much use in our common workflow. Our pacman
configs don't even make a reference to /repo.

Reduces code duplication.

With makechrootpkg not calling mkarchroot anymore,
the lock handover protocol is unneeded.

arch-nspawn does not do any locking, so add protection to archbuild.

Recent changes to systemd-nspawn have it take the machine name from
the chroot dir name, which isn't unique enough for our setup.

Separates the two features of mkarchroot. Provides users of the new
arch-nspawn with the full feature set of systemd-nspawn.

For example, this can be used to bind custom directories into the chroot.

Add option -T to build in a temporary chroot. This apply to any kind of
filesytem and allow to easily parrallelize builds.

This patch also simplify how $default_copy and $copy are defined.

Signed-off-by: Sébastien Luttringer <seblu@seblu.net>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

systemd-nspawn is capable of doing this as of systemd-198. Doing this
means we can remove all of our home grown chroot mount/umount logic, as
it's all performed by pacstrap or systemd-nspawn.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

Move detection of chrootdir type after have check if the directory exists.

This avoid the following messages when -r is not given
stat: cannot read file system information for '': No such file or directory

Signed-off-by: Sébastien Luttringer <seblu@seblu.net>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

Since TODO [1] which state:
It would be good for base-devel to install everything needed for a build chroot
we can remove base and sudo

[1] https://www.archlinux.org/todo/add-more-to-base-devel/



Signed-off-by: Sébastien Luttringer <seblu@seblu.net>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

Signed-off-by: Sébastien Luttringer <seblu@seblu.net>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

Enable btrfs features only if the underlying filesystem is btrfs and not rely
on the presence of the btrfs tools.

Signed-off-by: Sébastien Luttringer <seblu@seblu.net>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

Signed-off-by: Sébastien Luttringer <seblu@seblu.net>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

Since commit cb3a6ce1

, running makechroot 2 times to insert a package in a build
directory require to find a directory without PKGBUILD

cd /var/empty
makechrootpkg -cu -I virtualbox-host-dkms-*-i686.pkg.tar.xz -r <dir>
makechrootpkg -I virtualbox-host-dkms-*-i686.pkg.tar.xz -r <dir>
cd -
makechrootpkg -n -r <dir>

This patch allow makechrootpkg to handle more than one package to be installed
before the build is run and simplify the previous case in

makechrootpkg -ncu -I virtualbox-host-dkms-*-i686.pkg.tar.xz -I virtualbox-guest-dkms-*-i686.pkg.tar.xz -r <dir>

Signed-off-by: Sébastien Luttringer <seblu@seblu.net>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

This allow to build in one shot a package depending of a missing package

Signed-off-by: Sébastien Luttringer <seblu@seblu.net>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

This will allow, by example, to easily build a package with a custom pkg.

staging-x86_64-build -- -cI /var/cache/pacman/pkg/ldoc-1.2.0-1-any.pkg.tar.xz
staging-x86_64-build -- -n

Signed-off-by: Sébastien Luttringer <seblu@seblu.net>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

The usage messages now begins with a "Usage:", i.e. capitalized and with a colon. Fixes FS#26956.

Signed-off-by: Eric Bélanger <snowmaniscool@gmail.com>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

Signed-off-by: Eric Bélanger <snowmaniscool@gmail.com>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

Fixes FS#28973

Signed-off-by: Eric Bélanger <snowmaniscool@gmail.com>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

Signed-off-by: Eric Bélanger <snowmaniscool@gmail.com>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>