New comment by adrian-bl on void-packages repository

https://github.com/void-linux/void-packages/issues/37667#issuecomment-1165450907

Comment:
Digging around, the issue seems to be in zfs-lib.sh overwriting `root` with an old value.

I hacked up the following patch which fixes the issue for me:

```
--- zfs-lib.sh.orig	2022-06-24 12:46:00.250658147 +0200
+++ zfs-lib.sh	2022-06-24 12:39:42.823358632 +0200
@@ -87,11 +87,11 @@
         return
     fi
 
-    root=$(getarg root=)
+    xroot=$(getarg root=)
     rootfstype=$(getarg rootfstype=)
 
     # shellcheck disable=SC2249
-    case "$root" in
+    case "$xroot" in
         ""|zfs|zfs:|zfs:AUTO)
             root=zfs:AUTO
             rootfstype=zfs
@@ -99,7 +99,7 @@
             ;;
 
         ZFS=*|zfs:*)
-            root="${root#zfs:}"
+            root="${xroot#zfs:}"
             root="${root#ZFS=}"
             root=$(echo "$root" | tr '+' ' ')
             rootfstype=zfs
```