scripts: add slot_rindex2.py

1 files changed, 72 insertions, 0 deletions

diff --git a/scripts/slot_rindex2.py b/scripts/slot_rindex2.py
new file mode 100644
index 00000000..e3db2fcc
--- /dev/null
+++ b/scripts/slot_rindex2.py
@@ -0,0 +1,72 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+""" Checks what slots are used for a package in its reverse dependencies. """
+
+import portage
+
+import sys
+#from pprint import pprint
+
+def main():
+    trees = portage.create_trees()
+    trees["/"]["porttree"].settings = portage.settings
+    portdb = trees["/"]["porttree"]
+    portdb.dbapi.settings = portage.settings
+    portdb.dbapi.porttrees = [portage.portdb.porttree_root]
+
+    # does it make sense to remove _all_ useless stuff or just leave it as it is?
+    #portdb.dbapi._aux_cache_keys.clear()
+    #portdb.dbapi._aux_cache_keys.update(["EAPI", "KEYWORDS", "SLOT"])
+
+    res_slots = {}
+
+    # Loop through all package names
+    for cp in portdb.dbapi.cp_all():
+        #print(cp)
+
+        # Get versions
+        cpvrs = portdb.dbapi.match(cp)
+
+        # Group by slots
+        slots = {}
+        for cpvr in cpvrs:
+            slot = portdb.dbapi.aux_get(cpvr, ["SLOT"])[0]
+            if slot is None:
+                slot = 0
+            if not slot in slots:
+                slots[slot] = []
+            slots[slot].append(cpvr)
+
+        # XXX: Walk through slots (walk twice for ~arch and arch)
+        for slot in sorted(slots):
+            cpvr = portage.versions.best(slots[slot])
+            depends = portdb.dbapi.aux_get(cpvr, ['DEPEND', 'RDEPEND', 'PDEPEND'])
+            depends = set(portage.dep.use_reduce(' '.join(depends), matchall=True, flat=True))
+            depends = [dep for dep in depends if portage.dep.isvalidatom(dep)]
+
+            #print('DEPEND:')
+            #pprint(depends)
+
+            for depend in depends:
+                if portage.dep.dep_getkey(depend) == sys.argv[1]:
+                    mypkg_slot = portage.dep.dep_getslot(depend)
+                    if mypkg_slot is None:
+                        mypkg_slot = "unset"
+
+                    if mypkg_slot not in res_slots:
+                        res_slots[mypkg_slot] = [cpvr]
+                    else:
+                        res_slots[mypkg_slot].append(cpvr)
+                    #print(portage.dep.dep_getkey(depend) + ' uses ' + sys.argv[1] + ' slot ' +  portage.dep.dep_getslot(depend))
+
+    for slot in sorted(res_slots):
+        print('%s:%s' % (sys.argv[1], slot))
+        for rescpv in res_slots[slot]:
+            print('    ' + rescpv)
+
+
+if __name__ == "__main__":
+    main()
+
+## vim:set sts=4 ts=4 sw=4 expandtab: