Log to stderr in update-go-path.sh and drop the pinned Go package hint

update-go-path.sh

@@ -32,8 +32,8 @@ GO_ROOT=""
 RUN_DEFCONFIG=true
 DRY_RUN=false
 
-info() { echo "[INFO] $*"; }
-warn() { echo "[WARN] $*"; }
+info() { echo "[INFO] $*" >&2; }
+warn() { echo "[WARN] $*" >&2; }
 err()  { echo "[ERROR] $*" >&2; }
 
 usage() { sed -n '2,25p' "$0" | sed 's/^# \{0,1\}//;s/^#$//'; }
@@ -78,8 +78,9 @@ if [ -z "$GO_ROOT" ]; then
 
   if [ ${#GO_DIRS[@]} -eq 0 ]; then
     err "No Go installation found under /usr/lib/go-*, /usr/local/go or /usr/lib/golang."
-    err "Install one with:  sudo apt install golang-1.24-go"
-    err "or keep the default, where OpenWrt builds its own bootstrap chain."
+    err "Install Go from your distribution or from https://go.dev/dl/, or pass"
+    err "--go-root <dir>; or keep the default, where OpenWrt builds its own"
+    err "bootstrap chain."
     exit 1
   fi
 
@@ -122,7 +123,7 @@ if [ -f "$BOOTSTRAP_MK" ]; then
   if [ -n "$NEED" ] &&
     [ "$(printf '%s\n%s\n' "$NEED" "$GO_VER" | sort -V | head -n 1)" != "$NEED" ]; then
     warn "Installed Go $GO_VER is older than the bootstrap version $NEED this tree expects."
-    warn "The build may fail; consider installing golang-$NEED-go."
+    warn "The build may fail; install Go $NEED or newer, or drop --external."
   fi
 fi