small nixpkgs-tungsten workshop

The purpose of this workshop is to give you enough context and information to enable you to build packages from the nixpkgs-tungsten repository - especially the vrouter kernel modules. In this workshop we will:

• Install & Configure Nix
• Learn basic commands for building and installing packages
• Build & Install packages from nixpkgs-tungsten

Installing And Configuring Nix

• curl https://nixos.org/nix/install | sh
• Add source ~/.nix-profile/etc/profile.d/nix.sh to .bashrc
• Restart terminal and try nix doctor
• Check if bash-completion is installed: dpkg -l | grep bash-completion
• nix-env -i nix-bash-completions : install nix bash completions
• Add export XDG_DATA_DIRS="$XDG_DATA_DIRS:$HOME/.nix-profile/share" to .bashrc
• Start a new terminal session and try nix-env -i<TAB>

Getting nixpkgs-tungsten and configuring caches

• git clone https://github.com/cloudwatt/nixpkgs-tungsten.git
• nix-channel --add https://hydra.nix.corp.cloudwatt.com/jobset/nixpkgs-tungsten/trunk/channel/latest contrail
• nix-channel --update
• nix-env -qa '.*contrail.*' should work now
• Update .config/nix/nix.conf with cache settings

Using nixpkgs-tungsten

• nix repl . --> contrail<TAB> -- here we can discover everything provided
• nix-env -f default.nix -iA contrailApiCliWithExtra --> nix-env -q --> nix-env -e <TAB>
• nix-build default.nix -A contrail50.vrouterModuleCentos7_3_10 --> ls ./result