tristan0x/bbp-nix-channel repository overview

⁠Docker Nginx BBP NIX Channel

This repository is used by the following Docker Hub automated build repository⁠.

It constructs a Docker image providing:

• a NIX channel of Blue Brain Project packages over a NGINX web server
• a background process that keep the published channel synchronized when the GitHub repository hosting the BBP NIX expressions⁠ is updated.

⁠Usage

⁠Start the container

docker run -d -p 80:80 tristan0x/bbp-nix-channel

Then you can visit the channel at: http://localhost⁠

⁠Configure your NIX environment to use this channel

⁠One timer

nix-channel --add http://localhost/channels/bbp-pkgs-unstable
nix-channel --update

⁠Add the following line to ~/.profile

# setup SSH for gerrit access
if [[ "${NIX_PATH}"  != *"ssh-config-file"* ]]; then
        export NIX_PATH="ssh-config-file=$HOME/.ssh/config:$NIX_PATH"
fi
# setup SSH agent forwarding
if [[ "${SSH_AUTH_SOCK}x" != "x" ]]; then
        export NIX_PATH="ssh-auth-sock=${SSH_AUTH_SOCK}:${NIX_PATH}"
fi

export NIX_PATH="bbp=$HOME/.nix-defexpr/channels/bbp-pkgs:${NIX_PATH}"

⁠Register the NIX channel

Once the container is started:

nix-channel --add http://localhost/channels/bbp-pkgs-unstable
nix-channel --update

⁠Workaround

⁠EPFL Linux workstation

NIX won't be able to fetch BBP source code on EPFL Linux workstations because of an authentication issue. A workaround is to provide Nix the required shared library with the following commands:

mkdir -p /nix/var/nix/ext/nss/lib
ln -s /lib/x86_64-linux-gnu/libnss_sss.so.2 /nix/var/nix/ext/nss/lib/

Then add this following line in your ~/.profile:

export NSS_LIB_PATH=/nix/var/nix/ext/nss/lib

⁠Swift synchronization

This Docker image is also able to synchronize a Swift object store with the NIX expressions GitHub repository. To do so, you have to write swift.env text file with the following environment variables and pass the file to Docker when starting the container:

SWIFT_SYNC=on
OS_AUTH_URL=https://bbpopenstack.epfl.ch:5000/v3
OS_IDENTITY_API_VERSION=3
OS_INTERFACE=public
OS_USERNAME=YOUR-USERNAME
OS_PASSWORD=**********
OS_PROJECT_ID=7b31f31637944288b319cd6fa00a5701
OS_PROJECT_NAME=bbp-ou-hpc
OS_REGION_NAME=geneva
OS_USER_DOMAIN_NAME=bbp

docker run -d -p 80:80 --env-file=swift.env tristan0x/bbp-nix-channel

⁠LICENSE

MIT License. See LICENSE⁠ file for more information