Add setup script setup the blender conda env. For Ubuntu

Author: Giulero

setup_conda_blender.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+#
+# Usage: sudo ./blender-conda.sh /usr/share/blender/4.1
+# ------------------------------------------------------------------------------
+
+set -euo pipefail
+
+if [[ $# -lt 1 ]]; then
+  echo "Usage: $0 <BLENDER_ROOT>"
+  exit 1
+fi
+
+BLENDER_ROOT="$(realpath "$1")"
+PYTHON_DIR="$BLENDER_ROOT/python"
+
+# ──────────────────────────────────────────────────────────────────────────────
+# 1. Locate Blender’s bundled Python binary, whatever it’s called
+# ──────────────────────────────────────────────────────────────────────────────
+BLENDER_PY_BIN="$(find "$PYTHON_DIR/bin" -maxdepth 1 -type f -executable -name 'python3*' | head -n1 || true)"
+
+if [[ -z "$BLENDER_PY_BIN" ]]; then
+  echo "❌  Cannot find Blender's bundled Python inside: $PYTHON_DIR/bin/" >&2
+  exit 1
+fi
+
+# Pull out the major.minor version (e.g. 3.11)
+BLENDER_PY_VERSION="$("$BLENDER_PY_BIN" - <<'PY'
+import sys; print(f"{sys.version_info[0]}.{sys.version_info[1]}")
+PY
+)"
+echo "→ Blender uses Python $BLENDER_PY_VERSION"
+
+# ──────────────────────────────────────────────────────────────────────────────
+# 2. Create / reuse matching Conda environment
+# ──────────────────────────────────────────────────────────────────────────────
+ENV_NAME="blender_env${BLENDER_PY_VERSION//./}"   # e.g. blender_env311
+CONDA_HOME="$(conda info --base)"
+ENV_PATH="$CONDA_HOME/envs/$ENV_NAME"
+
+if conda env list | grep -qE "^$ENV_NAME\s"; then
+  echo "✓ Conda env '$ENV_NAME' already exists"
+else
+  echo "→ Creating Conda env '$ENV_NAME' with python=$BLENDER_PY_VERSION"
+  conda create -y -n "$ENV_NAME" python="$BLENDER_PY_VERSION"
+fi
+
+# ──────────────────────────────────────────────────────────────────────────────
+# 3. Swap Blender’s python/ with a symlink to the env
+# ──────────────────────────────────────────────────────────────────────────────
+cd "$BLENDER_ROOT"
+
+if [[ ! -L python ]]; then
+  TS=$(date +%s)
+  sudo mv python "python.bak.$TS"
+  echo "→ Backed up original python/ to python.bak.$TS"
+fi
+
+sudo ln -sfn "$ENV_PATH" python   # -f/-n: replace if link already exists
+echo "✓ Linked $ENV_PATH  →  $BLENDER_ROOT/python"
+
+echo
+echo "All set!  Launch Blender and run in the console:"
+echo "    import sys, numpy, pandas, bpy"
+echo "    print(sys.executable)"
+echo
+echo "to verify that it's using your new Conda environment."