sync: ollama.sh from Gitea BAND

ollama.sh

@@ -151,9 +151,34 @@ ensure_litellm() {
     fi
     ensure_pip
     log "Installing litellm..."
-    python3 -m pip install 'litellm[proxy]' --quiet || \
-        die "pip install litellm failed"
-    python3 -c "import litellm" || die "litellm import failed after install"
+
+    # Try: user install (respects PEP 668)
+    python3 -m pip install --user 'litellm[proxy]' --quiet 2>/dev/null && {
+        python3 -c "import litellm" && log "LiteLLM installed (user)" && return 0
+    }
+
+    # Try: venv in ~/.aios/venv
+    if [[ ! -d "$HOME/.aios/venv" ]]; then
+        python3 -m venv "$HOME/.aios/venv" 2>/dev/null || {
+            # venv không có sẵn, thử --break-system-packages
+            warn "venv failed, trying --break-system-packages..."
+        }
+    fi
+    if [[ -d "$HOME/.aios/venv" ]]; then
+        "$HOME/.aios/venv/bin/pip" install 'litellm[proxy]' --quiet 2>/dev/null && {
+            # Symlink or update PATH
+            mkdir -p "$HOME/.local/bin"
+            ln -sf "$HOME/.aios/venv/bin/litellm" "$HOME/.local/bin/litellm" 2>/dev/null || true
+            export PATH="$HOME/.aios/venv/bin:$PATH"
+            python3 -c "import litellm" && log "LiteLLM installed (venv)" && return 0
+        }
+    fi
+
+    # Fallback: --break-system-packages (Ubuntu/Debian PEP 668)
+    python3 -m pip install 'litellm[proxy]' --quiet --break-system-packages 2>/dev/null || \
+        python3 -m pip install 'litellm[proxy]' --quiet  # last try without flags
+
+    python3 -c "import litellm" || die "litellm install failed. Try: sudo apt install python3-pip && pip3 install litellm[proxy]"
     log "LiteLLM installed"
 }
 
@@ -204,7 +229,13 @@ start_litellm_proxy() {
     fi
 
     log "Starting LiteLLM proxy on ${PROXY_URL}..."
-    nohup python3 -m litellm.proxy.proxy_server \
+    # Use venv python if available, else system python3
+    local PYTHON="python3"
+    if [[ -x "$HOME/.aios/venv/bin/python" ]]; then
+        PYTHON="$HOME/.aios/venv/bin/python"
+        log "Using venv Python: $PYTHON"
+    fi
+    nohup "$PYTHON" -m litellm.proxy.proxy_server \
         --config "$LITELLM_CONFIG" \
         --port "$PROXY_PORT" \
         --host "$PROXY_HOST" \
@@ -237,13 +268,19 @@ LITELLM_LOG="$LITELLM_LOG"
 LITELLM_PID="$LITELLM_PID"
 PROXY_URL="$PROXY_URL"
 
+# Use venv python if available
+PYTHON="python3"
+if [[ -x "\$HOME/.aios/venv/bin/python" ]]; then
+    PYTHON="\$HOME/.aios/venv/bin/python"
+fi
+
 if curl -sf "\${PROXY_URL}/health" >/dev/null 2>&1; then
     echo "Proxy already running at \${PROXY_URL}"
     exit 0
 fi
 
-echo "Starting LiteLLM proxy..."
-nohup python3 -m litellm.proxy.proxy_server \\
+echo "Starting LiteLLM proxy (using: \$PYTHON)..."
+nohup "\$PYTHON" -m litellm.proxy.proxy_server \\
     --config "\$LITELLM_CONFIG" --port ${PROXY_PORT} --host ${PROXY_HOST} \\
     >> "\$LITELLM_LOG" 2>&1 &
 echo \$! > "\$LITELLM_PID"