Add required Julia packages to demo

examples/pysr_demo.ipynb

@@ -55,6 +55,7 @@
         "\n",
         "#---------------------------------------------------#\n",
         "JULIA_VERSION=\"1.7.2\"\n",
+        "JULIA_PACKAGES=\"PyCall SymbolicRegression\"\n",
         "JULIA_NUM_THREADS=4\n",
         "#---------------------------------------------------#\n",
         "\n",
@@ -67,6 +68,12 @@
         "  wget -nv $URL -O /tmp/julia.tar.gz # -nv means \"not verbose\"\n",
         "  tar -x -f /tmp/julia.tar.gz -C /usr/local --strip-components 1\n",
         "  rm /tmp/julia.tar.gz\n",
+        "\n",
+        "  for PKG in `echo $JULIA_PACKAGES`; do\n",
+        "    echo \"Installing Julia package $PKG...\"\n",
+        "    julia -e 'using Pkg; pkg\"add '$PKG'; precompile;\"'\n",
+        "  done\n",
+        "  \n",
         "  julia -e 'println(\"Success\")'\n",
         "fi"
       ]
@@ -1180,14 +1187,9 @@
     "accelerator": "GPU",
     "colab": {
       "collapsed_sections": [],
-      "name": "PySR_Demo_v4.ipynb",
+      "name": "pysr_demo.ipynb",
       "provenance": []
     },
-    "kernelspec": {
-      "display_name": "Python (main_ipynb)",
-      "language": "python",
-      "name": "main_ipynb"
-    },
     "language_info": {
       "codemirror_mode": {
         "name": "ipython",