If you haven't installed ximeraLatex you should do so.
The AUR contains xake-git which will install the latest version of xake. Therefore
yaourt -S xake-git
should suffice if you use yaourt.
Download the .deb
from the releases link above. Then install it with
sudo dpkg -i xake_0.8.20_amd64.deb
Download the .rpm
from the releases link above. Then install it with
sudo rpm -i xake-0.8.20.x86_64.rpm
If you would rather compile xake yourself, the following may work.
mkdir -p ~/go/src/github.com/ximeraproject
export GOPATH=$HOME/go
cd ~/go/src/github.com/ximeraproject
git clone https://github.com/XimeraProject/xake.git
cd xake
go get .
go build .
That may not work, though, depending on your version of libgit2. To build libgit2 statically, you could instead follow the following recipe:
export GOPATH=$HOME/go
export PKG_CONFIG_PATH=$HOME/go/src/github.com/libgit2/git2go/vendor/libgit2/build
export CGO_CFLAGS=-I$HOME/go/src/github.com/libgit2/git2go/vendor/libgit2/include
mkdir -p ~/go/src/github.com/ximeraproject
cd ~/go/src/github.com/ximeraproject
git clone https://github.com/XimeraProject/xake.git
go get -d github.com/libgit2/git2go
cd ~/go/src/github.com/libgit2/git2go
git submodule update --init
make install-static
cd ~/go/src/github.com/ximeraproject/xake
go get -tags static .
Then in the directory ~/go/bin
you should find a xake
binary.