# install rocksdb
add-apt-repository "deb http://ppa.launchpad.net/giskou/librocksdb/ubuntu trusty main"
apt-get update
apt-get install -y --force-yes librocksdb

# install multirust
curl -sf https://raw.githubusercontent.com/brson/multirust/master/blastoff.sh | sh -s -- --yes

# install nightly and make it default
multirust update nightly
multirust default nightly

# download and build parity
git clone https://github.com/ethcore/parity
cd parity
cargo build --release

Linux

# install rocksdb
git clone --tag v4.1 --depth=1 https://github.com/facebook/rocksdb.git
cd rocksdb
make shared_lib 
sudo cp -a librocksdb.so* /usr/lib 
sudo ldconfig 
cd ..

# install rust nightly
curl -sf https://raw.githubusercontent.com/brson/multirust/master/blastoff.sh | sudo sh -s -- --yes

# install nightly and make it default
sudo multirust update nightly
sudo multirust default nightly

# download and build parity
git clone https://github.com/ethcore/parity
cd parity
cargo build --release

OSX with Homebrew

# install rocksdb && multirust
brew update
brew install rocksdb
brew install multirust

# install nightly and make it default
multirust update nightly && multirust default nightly

# download and build parity
git clone https://github.com/ethcore/parity
cd parity
cargo build --release