添加功能当依赖解决器出问题时，报出什么原因导致的错误

2021-11-08 17:16:10 +08:00 · 2021-11-08 17:16:10 +08:00 · 231eb066ef
parent 195910dbc1
commit 231eb066ef
1 changed files with 94 additions and 5 deletions
--- a/backend/SystemUpdater/backend/init.py
+++ b/backend/SystemUpdater/backend/init.py
@ -311,14 +311,103 @@ class InstallBackend():
        except Exception as e:
            _success = False
            header = _("Could not calculate the upgrade")
-            desc = _("An unresolvable problem occurred while "
-                    "calculating the upgrade.\n\n"
-                    "Please report this bug against the 'kylin-system-updater' "
-                    "package and include the following error "
-                    "message:\n") + str(e)
+            desc = str(e)
            logging.error(header + desc)
+
+            msg = self._get_broken_details(self.cache)
+            logging.error(msg)
            return _success,[],[],header,desc

+    def _get_broken_details(self,cache,now=False):
+        """Return a message which provides debugging information about
+        broken packages.
+
+        This method is basically a Python implementation of apt-get.cc's
+        ShowBroken.
+
+        Keyword arguments:
+        trans -- the corresponding transaction
+        now -- if we check currently broken dependecies or the installation
+               candidate
+        """
+        msg = _("The following packages have unmet dependencies:")
+        msg += "\n\n"
+        for pkg in cache:
+            if not ((now and pkg.is_now_broken) or
+                    (not now and pkg.is_inst_broken)):
+                continue
+            msg += "%s: " % pkg.name
+            if now:
+                version = pkg.installed
+            else:
+                version = pkg.candidate
+            indent = " " * (len(pkg.name) + 2)
+            dep_msg = ""
+            for dep in version.dependencies:
+                or_msg = ""
+                for base_dep in dep.or_dependencies:
+                    if or_msg:
+                        or_msg += "or\n"
+                        or_msg += indent
+                    # Check if it's an important dependency
+                    # See apt-pkg/depcache.cc IsImportantDep
+                    # See apt-pkg/pkgcache.cc IsCritical()
+                    if not (base_dep.rawtype in ["Depends", "PreDepends",
+                                                 "Obsoletes", "DpkgBreaks",
+                                                 "Conflicts"] or
+                            (apt_pkg.config.find_b("APT::Install-Recommends",
+                                                   False) and
+                            base_dep.rawtype == "Recommends") or
+                            (apt_pkg.config.find_b("APT::Install-Suggests",
+                                                   False) and
+                             base_dep.rawtype == "Suggests")):
+                        continue
+                    # Get the version of the target package
+                    try:
+                        pkg_dep = cache[base_dep.name]
+                    except KeyError:
+                        dep_version = None
+                    else:
+                        if now:
+                            dep_version = pkg_dep.installed
+                        else:
+                            dep_version = pkg_dep.candidate
+                    # We only want to display dependencies which cannot
+                    # be satisfied
+                    if dep_version and not apt_pkg.check_dep(base_dep.version,
+                                                             base_dep.relation,
+                                                             version.version):
+                        break
+                    or_msg = "%s: %s " % (base_dep.rawtype, base_dep.name)
+                    if base_dep.version:
+                        or_msg += "(%s %s) " % (base_dep.relation,
+                                                base_dep.version)
+                    if self._cache.is_virtual_package(base_dep.name):
+                        or_msg += _("but it is a virtual package")
+                    elif not dep_version:
+                        if now:
+                            or_msg += _("but it is not installed")
+                        else:
+                            or_msg += _("but it is not going to "
+                                                    "be installed")
+                    elif now:
+                        # TRANSLATORS: %s is a version number
+                        or_msg += (("but %s is installed") %
+                                   dep_version.version)
+                    else:
+                        # TRANSLATORS: %s is a version number
+                        or_msg += (("but %s is to be installed") %
+                                   dep_version.version)
+                else:
+                    # Only append an or-group if at least one of the
+                    # dependencies cannot be satisfied
+                    if dep_msg:
+                        dep_msg += indent
+                    dep_msg += or_msg
+                    dep_msg += "\n"
+            msg += dep_msg
+        return msg
+
    #调用aptdeamon结束之后处理的地方 不管是出错还是正常都在此处理
    def _action_done(self, action, authorized, success, error_string,error_desc):
        self.window_main.is_working = False