====== Portage synchronization using Git. ======

===== Upgrading portage. =====
Until Portage >= 2.2 stabilizes you need to add appropriate keyword.
<code bash | Upgrading portage>
echo '<sys-apps/portage-2.3.0 **' >> /etc/portage/package.keywords
emerge -1 portage
</code>

Also add Portage SYNC variable to make.conf.
<code bash | SYNC command in make.conf>
echo 'SYNC="git://git.calculate.ru/calculate/portage.git"' >> /etc/make.conf
</code>
===== Setting up portage. =====
Clone Git repo with recent history of portage tree.
<code bash | Setting up Git portage>
rm -rf /usr/portage
git clone --branch=master --depth=1 -- git://git.calculate.ru/calculate/portage.git /usr/portage
mkdir /usr/portage/packages
</code>
===== Portage Synchronization. =====
Portage and metadata might be synchronized by this way. Metadata must be updated after each //eix-sync// run.
<code bash | Sync portage>
eix-sync
# egencache --repo=gentoo --update --jobs=$((`grep "^processor" /proc/cpuinfo | wc -l`+1)) # # Only for Git servers without metadata
</code>

===== Portage Overlays. =====
If you have an overlay for example in /usr/local/portage you need to set it's name like this.
<code bash | Portage repo name>
mkdir -p /usr/local/portage/profiles && echo gentoo_overlay > /usr/local/portage/profiles/repo_name
</code>