linux-wsl.install


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_warn_boot() {
  if ! mountpoint -q /boot 2>/dev/null || \
     ! findmnt -no FSTYPE /boot 2>/dev/null | grep -qE '^(9p|drvfs|virtiofs)$'; then
    cat >&2 <<'EOF'
==> WARNING: /boot is not a Windows-backed (drvfs/9p) mount.
==>   The linux-wsl kernel + modules.vhdx live in /boot; without a Windows-backed /boot
==>   they sit in the distro filesystem where Windows cannot read them, so .wslconfig
==>   kernel=/kernelModules= will NOT load this kernel. Anything installed for it (the
==>   kernel, headers, docs) stays inert until /boot is mounted from Windows and the
==>   package reinstalled.
EOF
  fi
}
_kernel_note() {
  cat >&2 <<'EOF'
==> By specifying vmlinuz-linux-wsl-modules.vhdx via the wsl2.kernelModules option,
==> the corresponding kernel modules can be loaded automatically. However, once WSL loads
==> this .vhdx file, it gets locked by Windows, preventing any updates. Therefore, if you
==> want to update the kernel, you need to temporarily shutdown wsl, remove the
==> wsl2.kernelModules setting and then restore it after the update is complete.
EOF
}
pre_install() { _kernel_note; }
pre_upgrade() { _kernel_note; }
post_install() { _warn_boot; }
post_upgrade() { _warn_boot; }