Improve speed of package ordering

Author: matteodelabre

package/toltec-bootstrap/toltecctl

@@ -309,18 +309,17 @@ reenable() {
 # its dependencies. Dependency cycles are broken arbitrarily
 list-installed-ordered() {
     # shellcheck disable=SC2016
-    local awk_trim='NR>1 {print gensub(/^[ \t]+|[ \t]+$/, "", "g", $0);}'
-
-    opkg list-installed | awk -F' - ' '{print $1}' | while read -r srcpkg; do
-        # Make sure all packages are included even when they don’t have
-        # any dependencies
-        echo "$srcpkg $srcpkg"
-
-        # List all dependencies for this package
-        opkg depends "$srcpkg" | awk "$awk_trim" | while read -r dstpkg; do
-            echo "$srcpkg $dstpkg"
-        done
-    done | tsort 2> /dev/null || true
+    local awk_list_to_graph='
+        /^.* depends on:$/{
+            from=$1;
+            print from " " from;
+        }
+
+        /^\t/{
+            print from " " $1;
+        }
+    '
+    opkg depends '*' | awk "$awk_list_to_graph" | tsort 2> /dev/null || true
     # tsort reports errors if there are dependency cycles, we ignore them
 }
 
@@ -338,7 +337,6 @@ uninstall() {
     chmod u+x "$opkg_path"
 
     # Remove installed packages in reverse dependency order
-    echo "Collecting installed packages"
     list-installed-ordered | while read -r pkgname; do
         "$opkg_path" remove --force-depends --force-remove "$pkgname"
     done