diff options
Diffstat (limited to 'cmdline')
| -rw-r--r-- | cmdline/apt.cc | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/cmdline/apt.cc b/cmdline/apt.cc index af8a95fa5..a876085ce 100644 --- a/cmdline/apt.cc +++ b/cmdline/apt.cc @@ -16,6 +16,7 @@ #include <apt-pkg/error.h> #include <apt-pkg/init.h> #include <apt-pkg/pkgsystem.h> +#include <apt-pkg/solver3.h> #include <apt-pkg/strutl.h> #include <apt-private/private-cmndline.h> @@ -53,6 +54,20 @@ static bool ShowHelp(CommandLine &) /*{{{*/ return true; } /*}}}*/ + +static bool DoWhy(CommandLine &CmdL) /*{{{*/ +{ + pkgCacheFile CacheFile; + APT::PackageList pkgset = APT::PackageList::FromCommandLine(CacheFile, CmdL.FileList + 1); + bool const decision = strcmp(CmdL.FileList[0], "why") == 0; + if (pkgset.size() != 1) + return _error->PendingError() ? false : _error->Error("Only a single argument is supported at this time."); + if (unlikely(not CacheFile.BuildDepCache())) + return false; + for (auto pkg : pkgset) + std::cout << APT::Solver::InternalCliWhy(CacheFile, pkg, decision) << std::flush; + return not _error->PendingError(); +} static std::vector<aptDispatchWithHelp> GetCommands() /*{{{*/ { // advanced commands are left undocumented on purpose @@ -81,6 +96,8 @@ static std::vector<aptDispatchWithHelp> GetCommands() /*{{{*/ {"modernize-sources", &ModernizeSources, _("modernize .list files to .sources files")}, {"moo", &DoMoo, nullptr}, {"satisfy", &DoBuildDep, _("satisfy dependency strings")}, + {"why", &DoWhy, _("produce a reason trace for the current state of the package")}, + {"why-not", &DoWhy, _("produce a reason trace for the current state of the package")}, // for compat with muscle memory {"dist-upgrade", &DoDistUpgrade, nullptr}, |