Add a setup script to install Julia + IJulia (#1927)

minimal-notebook/setup-scripts/setup-julia.bash

@@ -0,0 +1,39 @@
+#!/bin/bash
+set -exuo pipefail
+# Requirements:
+# - This script is run as the root user
+# - The JULIA_PKGDIR environment variable is set
+
+# Default julia version to install if env var is not set
+# Check https://julialang.org/downloads/
+JULIA_VERSION="${JULIA_VERSION:-1.9.1}"
+
+# Figure out what architecture we are installing in
+JULIA_ARCH=$(uname -m)
+JULIA_SHORT_ARCH="${JULIA_ARCH}"
+if [ "${JULIA_SHORT_ARCH}" == "x86_64" ]; then
+    JULIA_SHORT_ARCH="x64"
+fi
+
+# Figure out Julia Installer URL
+JULIA_INSTALLER="julia-${JULIA_VERSION}-linux-${JULIA_ARCH}.tar.gz"
+JULIA_MAJOR_MINOR=$(echo "${JULIA_VERSION}" | cut -d. -f 1,2)
+
+# Download and install Julia
+cd /tmp
+mkdir "/opt/julia-${JULIA_VERSION}"
+wget --progress=dot:giga "https://julialang-s3.julialang.org/bin/linux/${JULIA_SHORT_ARCH}/${JULIA_MAJOR_MINOR}/${JULIA_INSTALLER}"
+tar xzf "${JULIA_INSTALLER}" -C "/opt/julia-${JULIA_VERSION}" --strip-components=1
+rm "${JULIA_INSTALLER}"
+
+# Link Julia installed version to /usr/local/bin, so julia launches it
+ln -fs /opt/julia-*/bin/julia /usr/local/bin/julia
+
+# Tell Julia where conda libraries are
+mkdir -p /etc/julia
+echo "push!(Libdl.DL_LOAD_PATH, \"${CONDA_DIR}/lib\")" >> /etc/julia/juliarc.jl
+
+# Create JULIA_PKGDIR, where user libraries are installed
+mkdir "${JULIA_PKGDIR}"
+chown "${NB_USER}" "${JULIA_PKGDIR}"
+fix-permissions "${JULIA_PKGDIR}"