This will create chroots on demand if needed.

This makes it possible to use e.g. install=$pkgname.install

also set some sane default options

TEMPDIR is used before packages are copied into it and made it fail
because cannot find any.

Signed-off-by: Ionut Biru <ibiru@archlinux.org>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

* Set first enabled mirror found mirrorlist as mirror within the chroot.
* If the mirror is local bind its directory read-only into the chroot.
* Fallback is the kernel.org mirror.

Use en_US.UTF-8 and de_DE.UTF-8 by default (the latter is needed for some packages like gcc)

implements FS#20246

Fixes FS#20041

Thise code was copied from makepkg

Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

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>

CARCH might be used within the PKGBUILD to select correct sources

implementes FS#18437

The checks aren't reliable enough and fail if the local repo is broken due to
network failures. So for now we just allways commit.

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