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-rw-r--r--dev/todo/install-bb-without-bb.mdwn5
1 files changed, 3 insertions, 2 deletions
diff --git a/dev/todo/install-bb-without-bb.mdwn b/dev/todo/install-bb-without-bb.mdwn
index c0a8273..f8e87f4 100644
--- a/dev/todo/install-bb-without-bb.mdwn
+++ b/dev/todo/install-bb-without-bb.mdwn
@@ -60,11 +60,12 @@ therefore utility links are not yet created).
Once this new `opkg-lede` package is uploaded and `busybox` uses
`update-alternatives` for everything, `busybox` would need to declare that it
`Breaks` older versions of `opkg-lede`, to ensure that `opkg-lede` will preserve
-a copy of the `busybox` executable and its utility links. **However, this is
+a copy of the `busybox` executable and its utility links. However, this is
still insufficient, as the version of `opkg` that is *running* must have already
set up this environment before `busybox` is upgraded. `busybox`'s `prerm`
script will need to check for this somehow and abort the upgrade if `opkg` is
-too old to have prepared for a safe upgrade. More design work needed.**
+too old to have prepared for a safe upgrade. One solution is for the `opkg`
+script to set an `OPKG_BUSYBOX_SAVED` environment variable.
The `opkg` script of the `opkg-lede` package will need to read `busybox`'s list
of alternatives links. This is currently located at