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#!/usr/bin/env bash
set -Eeuo pipefail
# Diagnostics: when DEBUG=Y or DIAG=Y, print environment info useful for
# debugging why KVM or networking may not be available in restricted hosts
# (e.g. Hugging Face Spaces).
if [[ "${DEBUG:-N}" == [Yy1]* || "${DIAG:-N}" == [Yy1]* ]]; then
echo "--- startup diagnostics ---"
echo "User UID: $(id -u) ($(id -un 2>/dev/null || echo unknown))"
if [ -e /dev/kvm ]; then
ls -l /dev/kvm || true
if [ -w /dev/kvm ] 2>/dev/null; then
echo "/dev/kvm: present and writable"
else
echo "/dev/kvm: present but not writable"
fi
else
echo "/dev/kvm: missing"
fi
if [ -e /dev/net/tun ]; then
ls -l /dev/net/tun || true
echo "/dev/net/tun: present"
else
echo "/dev/net/tun: missing"
fi
if [ -e /dev/vhost-net ]; then
ls -l /dev/vhost-net || true
echo "/dev/vhost-net: present"
else
echo "/dev/vhost-net: missing"
fi
echo "Kernel accel availability (qemu):"
if command -v qemu-system-x86_64 &>/dev/null; then
qemu-system-x86_64 -accel help 2>/dev/null || true
else
echo "qemu-system-x86_64: not installed"
fi
echo "--- end diagnostics ---"
fi
# You can override this hook to execute a script before startup!
return 0
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