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#!/usr/bin/python
# tries to reorder the deps of a given list of packages so they
# are merged in order - liquidx@g.o (09 Oct 03)
import portage
import sys, string
fakedbapi = portage.fakedbapi()
varapi = portage.db["/"]["vartree"].dbapi
pkgs_to_reorder = sys.argv[1:]
pkgs_ordered = []
# key = catpkgver
# value = ( added, dependencies, slot )
DEP_ADDED = 0
DEP_DEPLIST = 1
DEP_SLOT = 2
dep_cache = {}
# very simply, we extract the dependencies for each package
for pkg in pkgs_to_reorder:
try:
deps, slot = varapi.aux_get(pkg, ["DEPEND", "SLOT"])
except ValueError:
sys.stderr.write("Error getting dependency information off " + pkg + "\n")
continue
realdeps = portage.dep_check(deps, fakedbapi)
vardeps = []
# match() finds the versions of all those that are installed
for dep in realdeps[1]:
vardeps = vardeps + varapi.match(dep)
dep_cache[pkg] = ( 0, vardeps, slot )
# then we just naively append to a sorted list of deps using this rule.
# if a dependency is going to be merged, we add it to the list like
# with the dep then the pkg itself.
# eg: dev-python/pyqt deps on dev-python/sip, so we the list will look like
# [dev-python/sip, dev-python/pyqt]
for pkg, depinfo in dep_cache.items():
dep_to_add = []
for dep in depinfo[DEP_DEPLIST]:
if dep in pkgs_to_reorder:
dep_to_add.append(dep)
pkgs_ordered += dep_to_add + [pkg]
# now, because the packages may have nested or multple dependencies, we
# then move thru the list from first to last and remove all duplicates.
# that way we know for sure that a package isn't merged twice or a dep
# comes before the package that depends on it.
pkgs_final_order = []
for pkg in pkgs_ordered:
if pkg not in pkgs_final_order:
pkgs_final_order += [pkg]
print string.join(pkgs_final_order, "\n")
#print portage.dep_expand("=dev-python/sip-3.8", portage.portdb)
#print portage.dep_check("X? ( >=dev-python/sip-3.8 )", fakedbapi)
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