deps(conda): use transformers-env with vllm,exllama(2) (#1554)

* deps(conda): use transformers with vllm

* join vllm, exllama, exllama2, split petals

backend/python/petals/test.sh

@@ -3,7 +3,16 @@
 ## A bash script wrapper that runs the transformers server with conda
 
 # Activate conda environment
-source activate transformers
+CONDA_ENV=petals
+# Activate conda environment
+# if source is available use it, or use conda
+#
+if [ -f /opt/conda/bin/activate ]; then
+    source activate $CONDA_ENV
+else
+    eval "$(conda shell.bash hook)"
+    conda activate $CONDA_ENV
+fi
 
 # get the directory where the bash script is located
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"