Add support for git repositories to brep-load

1 files changed, 916 insertions, 789 deletions

diff --git a/tests/load/driver.cxx b/tests/load/driver.cxx
index 8e7c86e..b387b9b 100644
--- a/tests/load/driver.cxx
+++ b/tests/load/driver.cxx
@@ -60,29 +60,53 @@ namespace bpkg
   }
 }
 
+static void
+test_pkg_repos (const cstrings& loader_args,
+                const dir_path& loadtab_dir,
+                odb::pgsql::database&);
+
+static void
+test_git_repos (const cstrings& loader_args,
+                const dir_path& loadtab_dir,
+                odb::pgsql::database&);
+
 int
 main (int argc, char* argv[])
 {
   auto print_usage = [argv]()
   {
-    cerr << "usage: " << argv[0]
-         << " <loader_path> [loader_options] <loadtab_file>" << endl;
+    cerr << "usage: " << argv[0] << " (pkg|git) "
+         << "<loader-path> [loader-options] <loadtab-dir>" << endl;
   };
 
-  if (argc < 3)
+  if (argc < 4)
   {
     print_usage ();
     return 1;
   }
 
+  int i (1);
+  repository_type rt;
+
+  try
+  {
+    rt = to_repository_type (argv[i++]);
+  }
+  catch (const invalid_argument&)
+  {
+    print_usage ();
+    return 1;
+  }
+
+  // Parse the database options.
+  //
   string user;
   string password;
   string name ("brep_package");
   string host;
   unsigned int port (0);
-  int i (2);
 
-  for (; i < argc - 1; ++i)
+  for (++i; i < argc - 1; ++i)
   {
     string n (argv[i]);
     if (n == "--db-user" || n == "-u")
@@ -103,32 +127,24 @@ main (int argc, char* argv[])
     return 1;
   }
 
-  try
-  {
-    path cp (argv[argc - 1]);
+  dir_path loadtab_dir (argv[i]);
 
-    // Make configuration file path absolute to use it's directory as base for
-    // internal repositories relative local paths.
-    //
-    if (cp.relative ())
-      cp.complete ();
-
-    // Update the packages.manifest file timestamp to enforce the loader to
-    // update the persistent state.
-    //
-    path p (cp.directory () / dir_path ("1/stable") / packages);
-    char const* args[] = {"touch", p.string ().c_str (), nullptr};
-    assert (process (args).wait ());
-
-    timestamp srt (file_mtime (p));
+  // Make configuration file directory absolute to use it as base for internal
+  // repositories relative local paths.
+  //
+  if (loadtab_dir.relative ())
+    loadtab_dir.complete ();
 
-    // Run the loader.
-    //
-    char const** ld_args (const_cast<char const**> (argv + 1));
-    assert (process (ld_args).wait ());
+  // Extract the loader args that are common for all tests (database options,
+  // etc). Note that they don't contain the loadtab path and the trailing
+  // NULL.
+  //
+  cstrings loader_args;
+  for (int i (2); i != argc - 1; ++i)
+    loader_args.push_back (argv[i]);
 
-    // Check persistent objects validity.
-    //
+  try
+  {
     odb::pgsql::database db (
       user,
       password,
@@ -137,773 +153,868 @@ main (int argc, char* argv[])
       port,
       "options='-c default_transaction_isolation=serializable'");
 
+    switch (rt)
     {
-      session s;
-      transaction t (db.begin ());
-
-      assert (db.query<repository> ().size () == 7);
-      assert (db.query<package> ().size () == 18);
-
-      shared_ptr<repository> sr (
-        db.load<repository> ("pkg:dev.cppget.org/stable"));
-
-      shared_ptr<repository> mr (
-        db.load<repository> ("pkg:dev.cppget.org/math"));
-
-      shared_ptr<repository> cr (
-        db.load<repository> ("pkg:dev.cppget.org/misc"));
-
-      shared_ptr<repository> tr (
-        db.load<repository> ("pkg:dev.cppget.org/testing"));
-
-      shared_ptr<repository> gr (
-        db.load<repository> ("pkg:dev.cppget.org/staging"));
-
-      // Verify 'stable' repository.
-      //
-      assert (sr->location.canonical_name () == "pkg:dev.cppget.org/stable");
-      assert (sr->location.string () ==
-              "http://dev.cppget.org/1/stable");
-      assert (sr->display_name == "stable");
-      assert (sr->priority == 1);
-      assert (!sr->url);
-      assert (sr->email && *sr->email == "repoman@dev.cppget.org" &&
-              sr->email->comment == "public mailing list");
-      assert (sr->summary &&
-              *sr->summary == "General C++ package stable repository");
-      assert (sr->description && *sr->description ==
-              "This is the awesome C++ package repository full of exciting "
-              "stuff.");
-
-      dir_path srp (cp.directory () / dir_path ("1/stable"));
-      assert (sr->cache_location.path () == srp.normalize ());
-
-      assert (sr->packages_timestamp == srt);
-      assert (sr->repositories_timestamp ==
-              file_mtime (sr->cache_location.path () / repositories));
-
-      assert (sr->internal);
-      assert (sr->complements.empty ());
-      assert (sr->prerequisites.size () == 2);
-      assert (sr->prerequisites[0].load () == cr);
-      assert (sr->prerequisites[1].load () == mr);
-
-      // Verify libfoo package versions.
-      //
-      // libfoo-+0-X.Y
-      //
-      shared_ptr<package> fpvxy (
-        db.load<package> (
-          package_id (package_name ("libfoo"), version ("+0-X.Y"))));
-
-      assert (fpvxy->project == package_name ("libfoo"));
-      assert (fpvxy->summary == "The Foo Library");
-      assert (fpvxy->tags.empty ());
-      assert (!fpvxy->description);
-      assert (!fpvxy->url);
-      assert (!fpvxy->package_url);
-      assert (!fpvxy->email);
-      assert (!fpvxy->package_email);
-
-      assert (fpvxy->internal_repository.load () == mr);
-      assert (fpvxy->other_repositories.empty ());
-
-      assert (fpvxy->priority == priority::low);
-      assert (fpvxy->changes.empty ());
-
-      assert (fpvxy->license_alternatives.size () == 1);
-      assert (fpvxy->license_alternatives[0].size () == 1);
-      assert (fpvxy->license_alternatives[0][0] == "MIT");
-
-      assert (fpvxy->dependencies.empty ());
-      assert (fpvxy->requirements.empty ());
-
-      assert (check_location (fpvxy));
-
-      assert (fpvxy->sha256sum && *fpvxy->sha256sum ==
-        "c994fd49f051ab7fb25f3a4e68ca878e484c5d3c2cb132b37d41224b0621b618");
-
-      // libfoo-1.0
-      //
-      shared_ptr<package> fpv1 (
-        db.load<package> (
-          package_id (package_name ("libfoo"), version ("1.0"))));
-
-      assert (fpv1->summary == "The Foo Library");
-      assert (fpv1->tags.empty ());
-      assert (!fpv1->description);
-      assert (!fpv1->url);
-      assert (!fpv1->package_url);
-      assert (!fpv1->email);
-      assert (!fpv1->package_email);
-
-      assert (fpv1->internal_repository.load () == sr);
-      assert (fpv1->other_repositories.size () == 2);
-      assert (fpv1->other_repositories[0].load () == mr);
-      assert (fpv1->other_repositories[1].load () == cr);
-
-      assert (fpv1->priority == priority::low);
-      assert (fpv1->changes.empty ());
-
-      assert (fpv1->license_alternatives.size () == 1);
-      assert (fpv1->license_alternatives[0].size () == 1);
-      assert (fpv1->license_alternatives[0][0] == "MIT");
-
-      assert (fpv1->dependencies.empty ());
-      assert (fpv1->requirements.empty ());
-
-      assert (check_location (fpv1));
-
-      assert (fpv1->sha256sum && *fpv1->sha256sum ==
-        "0df6d45a3514c6101609bdcfefe7659b5754e505c6cf6b4107141d8217bb981d");
-
-      // libfoo-1.2.2
-      //
-      shared_ptr<package> fpv2 (
-        db.load<package> (
-          package_id (package_name ("libfoo"), version ("1.2.2"))));
-
-      assert (fpv2->summary == "The Foo library");
-      assert (fpv2->tags == strings ({"c++", "foo"}));
-      assert (!fpv2->description);
-      assert (fpv2->url && *fpv2->url == "http://www.example.com/foo/");
-      assert (!fpv2->package_url);
-      assert (fpv2->email && *fpv2->email == "foo-users@example.com");
-      assert (!fpv2->package_email);
-
-      assert (fpv2->internal_repository.load () == sr);
-      assert (fpv2->other_repositories.empty ());
-      assert (fpv2->priority == priority::low);
-      assert (fpv2->changes.empty ());
-
-      assert (fpv2->license_alternatives.size () == 1);
-      assert (fpv2->license_alternatives[0].size () == 1);
-      assert (fpv2->license_alternatives[0][0] == "MIT");
-
-      assert (fpv2->dependencies.size () == 2);
-      assert (fpv2->dependencies[0].size () == 1);
-      assert (fpv2->dependencies[1].size () == 1);
-
-      auto dep = [&db] (
-        const char* n, const optional<dependency_constraint>& c) -> dependency
+    case repository_type::pkg:
+      {
+        test_pkg_repos (loader_args, loadtab_dir, db);
+        break;
+      }
+    case repository_type::git:
       {
-        return {lazy_shared_ptr<package> (
-            db, package_id (package_name (n), version ())), c};
-      };
-
-      assert (fpv2->dependencies[0][0] ==
-              dep (
-                "libbar",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    nullopt, true, version ("2.4.0"), false))));
-
-      assert (fpv2->dependencies[1][0] ==
-              dep (
-                "libexp",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    version ("+2-1.2"), false, version ("+2-1.2"), false))));
-
-      assert (check_location (fpv2));
-
-      assert (fpv2->sha256sum && *fpv2->sha256sum ==
-        "088068ea3d69542a153f829cf836013374763148fba0a43d8047974f58b5efd7");
-
-      // libfoo-1.2.2-alpha.1
-      //
-      shared_ptr<package> fpv2a (
-        db.load<package> (
-          package_id (package_name ("libfoo"), version ("1.2.2-alpha.1"))));
-
-      assert (fpv2a->summary == "The Foo library");
-      assert (fpv2a->tags == strings ({"c++", "foo"}));
-      assert (!fpv2a->description);
-      assert (fpv2a->url && *fpv2a->url == "http://www.example.com/foo/");
-      assert (!fpv2a->package_url);
-      assert (fpv2a->email && *fpv2a->email == "foo-users@example.com");
-      assert (!fpv2a->package_email);
-
-      assert (fpv2a->internal_repository.load () == sr);
-      assert (fpv2a->other_repositories.empty ());
-      assert (fpv2a->priority == priority::low);
-      assert (fpv2a->changes.empty ());
-
-      assert (fpv2a->license_alternatives.size () == 1);
-      assert (fpv2a->license_alternatives[0].size () == 1);
-      assert (fpv2a->license_alternatives[0][0] == "MIT");
-
-      assert (fpv2a->dependencies.size () == 3);
-      assert (fpv2a->dependencies[0].size () == 2);
-      assert (fpv2a->dependencies[1].size () == 1);
-      assert (fpv2a->dependencies[2].size () == 2);
-
-      assert (fpv2a->dependencies[0][0] ==
-              dep (
-                "libmisc",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    version ("0.1"), false, version ("2.0.0-"), true))));
-
-      assert (fpv2a->dependencies[0][1] ==
-              dep (
-                "libmisc",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    version ("2.0"), false, version ("5.0"), false))));
-
-      assert (fpv2a->dependencies[1][0] ==
-              dep (
-                "libgenx",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    version ("0.2"), true, version ("3.0"), true))));
-
-      assert (fpv2a->dependencies[2][0] ==
-              dep (
-                "libexpat",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    nullopt, true, version ("5.2"), true))));
-
-      assert (fpv2a->dependencies[2][1] ==
-              dep (
-                "libexpat",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    version ("1"), true, version ("5.1"), false))));
-
-      assert (fpv2a->requirements.empty ());
-
-      assert (check_location (fpv2a));
-
-      assert (fpv2a->sha256sum && *fpv2a->sha256sum ==
-        "34fc224087bfd9212de4acfbbf5275513ebc57678b5f029546918a62c57d15cb");
-
-      // libfoo-1.2.3-4
-      //
-      shared_ptr<package> fpv3 (
-        db.load<package> (
-          package_id (package_name ("libfoo"), version ("1.2.3+4"))));
-
-      assert (fpv3->summary == "The Foo library");
-      assert (fpv3->tags == strings ({"c++", "foo"}));
-      assert (!fpv3->description);
-      assert (fpv3->url && *fpv3->url == "http://www.example.com/foo/");
-      assert (!fpv3->package_url);
-      assert (fpv3->email && *fpv3->email == "foo-users@example.com");
-      assert (!fpv3->package_email);
-
-      assert (fpv3->internal_repository.load () == sr);
-      assert (fpv3->other_repositories.empty ());
-      assert (fpv3->priority == priority::low);
-
-      assert (fpv3->changes.empty ());
-
-      assert (fpv3->license_alternatives.size () == 1);
-      assert (fpv3->license_alternatives[0].size () == 1);
-      assert (fpv3->license_alternatives[0][0] == "MIT");
-
-      assert (fpv3->dependencies.size () == 1);
-      assert (fpv3->dependencies[0].size () == 1);
-      assert (fpv3->dependencies[0][0] ==
-              dep (
-                "libmisc",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    version ("2.0.0"), false, nullopt, true))));
-
-      assert (check_location (fpv3));
-
-      assert (fpv3->sha256sum && *fpv3->sha256sum ==
-        "204fb25edf2404e9e88e1bef8b2a444281a807d9087093147a2cc80a1ffba79a");
-
-      // libfoo-1.2.4
-      //
-      shared_ptr<package> fpv4 (
-        db.load<package> (
-          package_id (package_name ("libfoo"), version ("1.2.4"))));
-
-      assert (fpv4->summary == "The Foo Library");
-      assert (fpv4->tags == strings ({"c++", "foo"}));
-      assert (*fpv4->description == "Very good foo library.");
-      assert (fpv4->url && *fpv4->url == "http://www.example.com/foo/");
-      assert (!fpv4->package_url);
-      assert (fpv4->email && *fpv4->email == "foo-users@example.com");
-      assert (!fpv4->package_email);
-
-      assert (fpv4->internal_repository.load () == sr);
-      assert (fpv4->other_repositories.empty ());
-      assert (fpv4->priority == priority::low);
-      assert (fpv4->changes == "some changes 1\n\nsome changes 2");
-
-      assert (fpv4->license_alternatives.size () == 1);
-      assert (fpv4->license_alternatives[0].comment ==
-              "Permissive free software license.");
-      assert (fpv4->license_alternatives[0].size () == 1);
-      assert (fpv4->license_alternatives[0][0] == "MIT");
-
-      assert (fpv4->dependencies.size () == 1);
-      assert (fpv4->dependencies[0].size () == 1);
-      assert (fpv4->dependencies[0][0] ==
-              dep (
-                "libmisc",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    version ("2.0.0"), false, nullopt, true))));
-
-      assert (check_location (fpv4));
-
-      assert (fpv4->sha256sum && *fpv4->sha256sum ==
-        "aa1606323bfc59b70de642629dc5d8318cc5348e3646f90ed89406d975db1e1d");
-
-      // Verify 'math' repository.
-      //
-      assert (mr->location.canonical_name () == "pkg:dev.cppget.org/math");
-      assert (mr->location.string () ==
-              "http://dev.cppget.org/1/math");
-      assert (mr->display_name == "math");
-      assert (mr->priority == 2);
-      assert (!mr->url);
-      assert (mr->email && *mr->email == "repoman@dev.cppget.org");
-      assert (mr->summary && *mr->summary == "Math C++ package repository");
-      assert (mr->description && *mr->description ==
-              "This is the awesome C++ package repository full of remarkable "
-              "algorithms and\nAPIs.");
-
-      dir_path mrp (cp.directory () / dir_path ("1/math"));
-      assert (mr->cache_location.path () == mrp.normalize ());
-
-      assert (mr->packages_timestamp ==
-              file_mtime (mr->cache_location.path () / packages));
-
-      assert (mr->repositories_timestamp ==
-              file_mtime (mr->cache_location.path () / repositories));
-
-      assert (mr->internal);
-
-      assert (mr->complements.empty ());
-      assert (mr->prerequisites.size () == 1);
-      assert (mr->prerequisites[0].load () == cr);
-
-      // Verify libstudxml package version.
-      //
-      shared_ptr<package> xpv (
-        db.load<package> (
-          package_id (package_name ("libstudxml"), version ("1.0.0+1"))));
-
-      assert (xpv->summary == "Modern C++ XML API");
-      assert (xpv->tags == strings ({"c++", "xml", "parser", "serializer",
-              "pull", "streaming", "modern"}));
-      assert (!xpv->description);
-      assert (xpv->url &&
-              *xpv->url == "http://www.codesynthesis.com/projects/libstudxml/");
-      assert (!xpv->package_url);
-      assert (xpv->email && *xpv->email ==
-              email ("studxml-users@codesynthesis.com",
-                     "Public mailing list, posts by  non-members "
-                     "are allowed but moderated."));
-      assert (xpv->package_email &&
-              *xpv->package_email == email ("boris@codesynthesis.com",
-                                            "Direct email to the author."));
-
-      assert (xpv->internal_repository.load () == mr);
-      assert (xpv->other_repositories.empty ());
-      assert (xpv->priority == priority::low);
-      assert (xpv->changes.empty ());
-
-      assert (xpv->license_alternatives.size () == 1);
-      assert (xpv->license_alternatives[0].size () == 1);
-      assert (xpv->license_alternatives[0][0] == "MIT");
-
-      assert (xpv->dependencies.size () == 2);
-      assert (xpv->dependencies[0].size () == 1);
-      assert (xpv->dependencies[0][0] ==
-              dep (
-                "libexpat",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    version ("2.0.0"), false, nullopt, true))));
-
-      assert (xpv->dependencies[1].size () == 1);
-      assert (xpv->dependencies[1][0] == dep ("libgenx", nullopt));
-
-      assert (xpv->requirements.empty ());
-
-      assert (check_location (xpv));
-
-      assert (xpv->sha256sum && *xpv->sha256sum ==
-        "cfa4b1f89f8e903d48eff1e1d14628c32aa4d126d09b0b056d2cd80f8dc78580");
-
-      // Verify libfoo package versions.
-      //
-      // libfoo-1.2.4-1
-      //
-      shared_ptr<package> fpv5 (
-        db.load<package> (
-          package_id (package_name ("libfoo"), version ("1.2.4+1"))));
-
-      assert (fpv5->summary == "The Foo Math Library");
-      assert (fpv5->tags == strings ({"c++", "foo", "math"}));
-      assert (*fpv5->description ==
-              "A modern C++ library with easy to use linear algebra and lot "
-              "of optimization\ntools.\n\nThere are over 100 functions in "
-              "total with an extensive test suite. The API is\nsimilar to "
-              "MATLAB.\n\nUseful for conversion of research code into "
-              "production environments.");
-
-      assert (fpv5->url && *fpv5->url == "http://www.example.com/foo/");
-
-      assert (fpv5->doc_url && *fpv5->doc_url ==
-              "http://www.example.org/projects/libfoo/man.xhtml" &&
-              fpv5->doc_url->comment == "Documentation page.");
-
-      assert (fpv5->src_url && *fpv5->src_url ==
-              "http://scm.example.com/?p=odb/libodb.git;a=tree" &&
-              fpv5->src_url->comment == "Source tree url.");
-
-      assert (fpv5->package_url &&
-              *fpv5->package_url == "http://www.example.com/foo/pack");
-      assert (fpv5->email && *fpv5->email == "foo-users@example.com");
-      assert (fpv5->package_email &&
-              *fpv5->package_email == "pack@example.com");
-
-      assert (fpv5->internal_repository.load () == mr);
-      assert (fpv5->other_repositories.size () == 1);
-      assert (fpv5->other_repositories[0].load () == cr);
-
-      assert (fpv5->priority == priority::high);
-      assert (fpv5->priority.comment ==
-              "Critical bug fixes, performance improvement.");
-
-      const char ch[] = R"DLM(1.2.4+1
+        test_git_repos (loader_args, loadtab_dir, db);
+        break;
+      }
+    default:
+      {
+        print_usage ();
+        return 1;
+      }
+    }
+  }
+  // Fully qualified to avoid ambiguity with odb exception.
+  //
+  catch (const std::exception& e)
+  {
+    cerr << e << endl;
+    return 1;
+  }
+
+  return 0;
+}
+
+static inline dependency
+dep (const char* n, optional<dependency_constraint> c)
+{
+  return dependency {package_name (n), move (c), nullptr};
+}
+
+static void
+test_git_repos (const cstrings& loader_args,
+                const dir_path& loadtab_dir,
+                odb::pgsql::database& db)
+{
+  path loadtab (loadtab_dir / "git-loadtab");
+
+  cstrings args (loader_args);
+  args.push_back ("--force");
+  args.push_back ("--shallow");
+  args.push_back (loadtab.string ().c_str ());
+  args.push_back (nullptr);
+
+  {
+    // Run the loader.
+    //
+    assert (process (args.data ()).wait ());
+
+    // Check persistent objects.
+    //
+    session s;
+    transaction t (db.begin ());
+
+    assert (db.query<repository> ().size () == 1);
+    assert (db.query<package> ().size () == 1);
+
+    // Verify 'foo' repository.
+    //
+    shared_ptr<repository> r (
+      db.load<repository> ("git:example.com/foo#master"));
+
+    assert (r->location.string () == "https://git.example.com/foo.git#master");
+    assert (r->summary && *r->summary == "foo project repository");
+
+    // Verify libfoo package version.
+    //
+    // libfoo-1.0
+    //
+    shared_ptr<package> p (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("1.0"))));
+
+    assert (p->fragment &&
+            *p->fragment == "0f50af28d1cfb0c22f5b88e2bf674ab732e058d9");
+
+    assert (p->dependencies.size () == 1);
+    assert (p->dependencies[0].size () == 1);
+
+    assert (p->dependencies[0][0] ==
+            dep ("libmisc",
+                 dependency_constraint (
+                   version ("1.0"), false, version ("1.0"), false)));
+
+    t.commit ();
+  }
+}
+
+static void
+test_pkg_repos (const cstrings& loader_args,
+                const dir_path& loadtab_dir,
+                odb::pgsql::database& db)
+{
+  path p (loadtab_dir / dir_path ("1/stable") / packages);
+  timestamp srt (file_mtime (p));
+
+  path loadtab (loadtab_dir / "loadtab");
+
+  // Load the repositories and check persistent objects validity.
+  //
+  {
+    cstrings args (loader_args);
+    args.push_back ("--force");
+    args.push_back (loadtab.string ().c_str ());
+    args.push_back (nullptr);
+
+    // Run the loader.
+    //
+    assert (process (args.data ()).wait ());
+
+    // Check persistent objects.
+    //
+    session s;
+    transaction t (db.begin ());
+
+    assert (db.query<repository> ().size () == 7);
+    assert (db.query<package> ().size () == 18);
+
+    shared_ptr<repository> sr (
+      db.load<repository> ("pkg:dev.cppget.org/stable"));
+
+    shared_ptr<repository> mr (
+      db.load<repository> ("pkg:dev.cppget.org/math"));
+
+    shared_ptr<repository> cr (
+      db.load<repository> ("pkg:dev.cppget.org/misc"));
+
+    shared_ptr<repository> tr (
+      db.load<repository> ("pkg:dev.cppget.org/testing"));
+
+    shared_ptr<repository> gr (
+      db.load<repository> ("pkg:dev.cppget.org/staging"));
+
+    // Verify 'stable' repository.
+    //
+    assert (sr->location.canonical_name () == "pkg:dev.cppget.org/stable");
+    assert (sr->location.string () ==
+            "http://dev.cppget.org/1/stable");
+    assert (sr->display_name == "stable");
+    assert (sr->priority == 1);
+    assert (!sr->interface_url);
+    assert (sr->email && *sr->email == "repoman@dev.cppget.org" &&
+            sr->email->comment == "public mailing list");
+    assert (sr->summary &&
+            *sr->summary == "General C++ package stable repository");
+    assert (sr->description && *sr->description ==
+            "This is the awesome C++ package repository full of exciting "
+            "stuff.");
+
+    dir_path srp (loadtab.directory () / dir_path ("1/stable"));
+    assert (sr->cache_location.path () == srp.normalize ());
+
+    assert (sr->packages_timestamp == srt);
+    assert (sr->repositories_timestamp ==
+            file_mtime (sr->cache_location.path () / repositories));
+
+    assert (sr->internal);
+    assert (sr->complements.empty ());
+    assert (sr->prerequisites.size () == 2);
+    assert (sr->prerequisites[0].load () == cr);
+    assert (sr->prerequisites[1].load () == mr);
+
+    // Verify libfoo package versions.
+    //
+    // libfoo-+0-X.Y
+    //
+    shared_ptr<package> fpvxy (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("+0-X.Y"))));
+
+    assert (fpvxy->project == package_name ("libfoo"));
+    assert (fpvxy->summary == "The Foo Library");
+    assert (fpvxy->tags.empty ());
+    assert (!fpvxy->description);
+    assert (!fpvxy->url);
+    assert (!fpvxy->package_url);
+    assert (!fpvxy->email);
+    assert (!fpvxy->package_email);
+
+    assert (fpvxy->internal_repository.load () == mr);
+    assert (fpvxy->other_repositories.empty ());
+
+    assert (fpvxy->priority == priority::low);
+    assert (fpvxy->changes.empty ());
+
+    assert (fpvxy->license_alternatives.size () == 1);
+    assert (fpvxy->license_alternatives[0].size () == 1);
+    assert (fpvxy->license_alternatives[0][0] == "MIT");
+
+    assert (fpvxy->dependencies.empty ());
+    assert (fpvxy->requirements.empty ());
+
+    assert (check_location (fpvxy));
+
+    assert (fpvxy->sha256sum && *fpvxy->sha256sum ==
+            "c994fd49f051ab7fb25f3a4e68ca878e484c5d3c2cb132b37d41224b0621b618");
+
+    // libfoo-1.0
+    //
+    shared_ptr<package> fpv1 (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("1.0"))));
+
+    assert (fpv1->summary == "The Foo Library");
+    assert (fpv1->tags.empty ());
+    assert (!fpv1->description);
+    assert (!fpv1->url);
+    assert (!fpv1->package_url);
+    assert (!fpv1->email);
+    assert (!fpv1->package_email);
+
+    assert (fpv1->internal_repository.load () == sr);
+    assert (fpv1->other_repositories.size () == 2);
+    assert (fpv1->other_repositories[0].load () == mr);
+    assert (fpv1->other_repositories[1].load () == cr);
+
+    assert (fpv1->priority == priority::low);
+    assert (fpv1->changes.empty ());
+
+    assert (fpv1->license_alternatives.size () == 1);
+    assert (fpv1->license_alternatives[0].size () == 1);
+    assert (fpv1->license_alternatives[0][0] == "MIT");
+
+    assert (fpv1->dependencies.empty ());
+    assert (fpv1->requirements.empty ());
+
+    assert (check_location (fpv1));
+
+    assert (fpv1->sha256sum && *fpv1->sha256sum ==
+            "0df6d45a3514c6101609bdcfefe7659b5754e505c6cf6b4107141d8217bb981d");
+
+    // libfoo-1.2.2
+    //
+    shared_ptr<package> fpv2 (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("1.2.2"))));
+
+    assert (fpv2->summary == "The Foo library");
+    assert (fpv2->tags == strings ({"c++", "foo"}));
+    assert (!fpv2->description);
+    assert (fpv2->url && *fpv2->url == "http://www.example.com/foo/");
+    assert (!fpv2->package_url);
+    assert (fpv2->email && *fpv2->email == "foo-users@example.com");
+    assert (!fpv2->package_email);
+
+    assert (fpv2->internal_repository.load () == sr);
+    assert (fpv2->other_repositories.empty ());
+    assert (fpv2->priority == priority::low);
+    assert (fpv2->changes.empty ());
+
+    assert (fpv2->license_alternatives.size () == 1);
+    assert (fpv2->license_alternatives[0].size () == 1);
+    assert (fpv2->license_alternatives[0][0] == "MIT");
+
+    assert (fpv2->dependencies.size () == 2);
+    assert (fpv2->dependencies[0].size () == 1);
+    assert (fpv2->dependencies[1].size () == 1);
+
+    assert (fpv2->dependencies[0][0] ==
+            dep ("libbar",
+                 dependency_constraint (
+                   nullopt, true, version ("2.4.0"), false)));
+
+    assert (fpv2->dependencies[1][0] ==
+            dep ("libexp",
+                 dependency_constraint (
+                   version ("+2-1.2"), false, version ("+2-1.2"), false)));
+
+    assert (check_location (fpv2));
+
+    assert (fpv2->sha256sum && *fpv2->sha256sum ==
+            "088068ea3d69542a153f829cf836013374763148fba0a43d8047974f58b5efd7");
+
+    // libfoo-1.2.2-alpha.1
+    //
+    shared_ptr<package> fpv2a (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("1.2.2-alpha.1"))));
+
+    assert (fpv2a->summary == "The Foo library");
+    assert (fpv2a->tags == strings ({"c++", "foo"}));
+    assert (!fpv2a->description);
+    assert (fpv2a->url && *fpv2a->url == "http://www.example.com/foo/");
+    assert (!fpv2a->package_url);
+    assert (fpv2a->email && *fpv2a->email == "foo-users@example.com");
+    assert (!fpv2a->package_email);
+
+    assert (fpv2a->internal_repository.load () == sr);
+    assert (fpv2a->other_repositories.empty ());
+    assert (fpv2a->priority == priority::low);
+    assert (fpv2a->changes.empty ());
+
+    assert (fpv2a->license_alternatives.size () == 1);
+    assert (fpv2a->license_alternatives[0].size () == 1);
+    assert (fpv2a->license_alternatives[0][0] == "MIT");
+
+    assert (fpv2a->dependencies.size () == 3);
+    assert (fpv2a->dependencies[0].size () == 2);
+    assert (fpv2a->dependencies[1].size () == 1);
+    assert (fpv2a->dependencies[2].size () == 2);
+
+    assert (fpv2a->dependencies[0][0] ==
+            dep ("libmisc",
+                 dependency_constraint (
+                   version ("0.1"), false, version ("2.0.0-"), true)));
+
+    assert (fpv2a->dependencies[0][1] ==
+            dep ("libmisc",
+                 dependency_constraint (
+                   version ("2.0"), false, version ("5.0"), false)));
+
+    assert (fpv2a->dependencies[1][0] ==
+            dep ("libgenx",
+                 dependency_constraint (
+                   version ("0.2"), true, version ("3.0"), true)));
+
+    assert (fpv2a->dependencies[2][0] ==
+            dep ("libexpat",
+                 dependency_constraint (
+                   nullopt, true, version ("5.2"), true)));
+
+    assert (fpv2a->dependencies[2][1] ==
+            dep ("libexpat",
+                 dependency_constraint (
+                   version ("1"), true, version ("5.1"), false)));
+
+    assert (fpv2a->requirements.empty ());
+
+    assert (check_location (fpv2a));
+
+    assert (fpv2a->sha256sum && *fpv2a->sha256sum ==
+            "34fc224087bfd9212de4acfbbf5275513ebc57678b5f029546918a62c57d15cb");
+
+    // libfoo-1.2.3-4
+    //
+    shared_ptr<package> fpv3 (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("1.2.3+4"))));
+
+    assert (fpv3->summary == "The Foo library");
+    assert (fpv3->tags == strings ({"c++", "foo"}));
+    assert (!fpv3->description);
+    assert (fpv3->url && *fpv3->url == "http://www.example.com/foo/");
+    assert (!fpv3->package_url);
+    assert (fpv3->email && *fpv3->email == "foo-users@example.com");
+    assert (!fpv3->package_email);
+
+    assert (fpv3->internal_repository.load () == sr);
+    assert (fpv3->other_repositories.empty ());
+    assert (fpv3->priority == priority::low);
+
+    assert (fpv3->changes.empty ());
+
+    assert (fpv3->license_alternatives.size () == 1);
+    assert (fpv3->license_alternatives[0].size () == 1);
+    assert (fpv3->license_alternatives[0][0] == "MIT");
+
+    assert (fpv3->dependencies.size () == 1);
+    assert (fpv3->dependencies[0].size () == 1);
+    assert (fpv3->dependencies[0][0] ==
+            dep ("libmisc",
+                 dependency_constraint (
+                   version ("2.0.0"), false, nullopt, true)));
+
+    assert (check_location (fpv3));
+
+    assert (fpv3->sha256sum && *fpv3->sha256sum ==
+            "204fb25edf2404e9e88e1bef8b2a444281a807d9087093147a2cc80a1ffba79a");
+
+    // libfoo-1.2.4
+    //
+    shared_ptr<package> fpv4 (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("1.2.4"))));
+
+    assert (fpv4->summary == "The Foo Library");
+    assert (fpv4->tags == strings ({"c++", "foo"}));
+    assert (*fpv4->description == "Very good foo library.");
+    assert (fpv4->url && *fpv4->url == "http://www.example.com/foo/");
+    assert (!fpv4->package_url);
+    assert (fpv4->email && *fpv4->email == "foo-users@example.com");
+    assert (!fpv4->package_email);
+
+    assert (fpv4->internal_repository.load () == sr);
+    assert (fpv4->other_repositories.empty ());
+    assert (fpv4->priority == priority::low);
+    assert (fpv4->changes == "some changes 1\n\nsome changes 2");
+
+    assert (fpv4->license_alternatives.size () == 1);
+    assert (fpv4->license_alternatives[0].comment ==
+            "Permissive free software license.");
+    assert (fpv4->license_alternatives[0].size () == 1);
+    assert (fpv4->license_alternatives[0][0] == "MIT");
+
+    assert (fpv4->dependencies.size () == 1);
+    assert (fpv4->dependencies[0].size () == 1);
+    assert (fpv4->dependencies[0][0] ==
+            dep ("libmisc",
+                 dependency_constraint (
+                   version ("2.0.0"), false, nullopt, true)));
+
+    assert (check_location (fpv4));
+
+    assert (fpv4->sha256sum && *fpv4->sha256sum ==
+            "aa1606323bfc59b70de642629dc5d8318cc5348e3646f90ed89406d975db1e1d");
+
+    // Verify 'math' repository.
+    //
+    assert (mr->location.canonical_name () == "pkg:dev.cppget.org/math");
+    assert (mr->location.string () ==
+            "http://dev.cppget.org/1/math");
+    assert (mr->display_name == "math");
+    assert (mr->priority == 2);
+    assert (!mr->interface_url);
+    assert (mr->email && *mr->email == "repoman@dev.cppget.org");
+    assert (mr->summary && *mr->summary == "Math C++ package repository");
+    assert (mr->description && *mr->description ==
+            "This is the awesome C++ package repository full of remarkable "
+            "algorithms and\nAPIs.");
+
+    dir_path mrp (loadtab.directory () / dir_path ("1/math"));
+    assert (mr->cache_location.path () == mrp.normalize ());
+
+    assert (mr->packages_timestamp ==
+            file_mtime (mr->cache_location.path () / packages));
+
+    assert (mr->repositories_timestamp ==
+            file_mtime (mr->cache_location.path () / repositories));
+
+    assert (mr->internal);
+
+    assert (mr->complements.empty ());
+    assert (mr->prerequisites.size () == 1);
+    assert (mr->prerequisites[0].load () == cr);
+
+    // Verify libstudxml package version.
+    //
+    shared_ptr<package> xpv (
+      db.load<package> (
+        package_id (package_name ("libstudxml"), version ("1.0.0+1"))));
+
+    assert (xpv->summary == "Modern C++ XML API");
+    assert (xpv->tags == strings ({"c++", "xml", "parser", "serializer",
+            "pull", "streaming", "modern"}));
+    assert (!xpv->description);
+    assert (xpv->url &&
+            *xpv->url == "http://www.codesynthesis.com/projects/libstudxml/");
+    assert (!xpv->package_url);
+    assert (xpv->email && *xpv->email ==
+            email ("studxml-users@codesynthesis.com",
+                   "Public mailing list, posts by  non-members "
+                   "are allowed but moderated."));
+    assert (xpv->package_email &&
+            *xpv->package_email == email ("boris@codesynthesis.com",
+                                          "Direct email to the author."));
+
+    assert (xpv->internal_repository.load () == mr);
+    assert (xpv->other_repositories.empty ());
+    assert (xpv->priority == priority::low);
+    assert (xpv->changes.empty ());
+
+    assert (xpv->license_alternatives.size () == 1);
+    assert (xpv->license_alternatives[0].size () == 1);
+    assert (xpv->license_alternatives[0][0] == "MIT");
+
+    assert (xpv->dependencies.size () == 2);
+    assert (xpv->dependencies[0].size () == 1);
+    assert (xpv->dependencies[0][0] ==
+            dep ("libexpat",
+                 dependency_constraint (
+                   version ("2.0.0"), false, nullopt, true)));
+
+    assert (xpv->dependencies[1].size () == 1);
+    assert (xpv->dependencies[1][0] == dep ("libgenx", nullopt));
+
+    assert (xpv->requirements.empty ());
+
+    assert (check_location (xpv));
+
+    assert (xpv->sha256sum && *xpv->sha256sum ==
+            "cfa4b1f89f8e903d48eff1e1d14628c32aa4d126d09b0b056d2cd80f8dc78580");
+
+    // Verify libfoo package versions.
+    //
+    // libfoo-1.2.4-1
+    //
+    shared_ptr<package> fpv5 (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("1.2.4+1"))));
+
+    assert (fpv5->summary == "The Foo Math Library");
+    assert (fpv5->tags == strings ({"c++", "foo", "math"}));
+    assert (*fpv5->description ==
+            "A modern C++ library with easy to use linear algebra and lot "
+            "of optimization\ntools.\n\nThere are over 100 functions in "
+            "total with an extensive test suite. The API is\nsimilar to "
+            "MATLAB.\n\nUseful for conversion of research code into "
+            "production environments.");
+
+    assert (fpv5->url && *fpv5->url == "http://www.example.com/foo/");
+
+    assert (fpv5->doc_url && *fpv5->doc_url ==
+            "http://www.example.org/projects/libfoo/man.xhtml" &&
+            fpv5->doc_url->comment == "Documentation page.");
+
+    assert (fpv5->src_url && *fpv5->src_url ==
+            "http://scm.example.com/?p=odb/libodb.git;a=tree" &&
+            fpv5->src_url->comment == "Source tree url.");
+
+    assert (fpv5->package_url &&
+            *fpv5->package_url == "http://www.example.com/foo/pack");
+    assert (fpv5->email && *fpv5->email == "foo-users@example.com");
+    assert (fpv5->package_email &&
+            *fpv5->package_email == "pack@example.com");
+
+    assert (fpv5->internal_repository.load () == mr);
+    assert (fpv5->other_repositories.size () == 1);
+    assert (fpv5->other_repositories[0].load () == cr);
+
+    assert (fpv5->priority == priority::high);
+    assert (fpv5->priority.comment ==
+            "Critical bug fixes, performance improvement.");
+
+    const char ch[] = R"DLM(1.2.4+1
  * applied patch for critical bug-219
  * regenerated documentation
 
 1.2.4
  * test suite extended significantly)DLM";
 
-      assert (fpv5->changes == ch);
-
-      assert (fpv5->license_alternatives.size () == 2);
-      assert (fpv5->license_alternatives[0].comment ==
-              "If using with GNU TLS.");
-      assert (fpv5->license_alternatives[0].size () == 2);
-      assert (fpv5->license_alternatives[0][0] == "LGPLv2");
-      assert (fpv5->license_alternatives[0][1] == "MIT");
-      assert (fpv5->license_alternatives[1].comment ==
-              "If using with OpenSSL.");
-      assert (fpv5->license_alternatives[1].size () == 1);
-      assert (fpv5->license_alternatives[1][0] == "BSD");
-
-      assert (fpv5->dependencies.size () == 3);
-      assert (fpv5->dependencies[0].size () == 2);
-      assert (fpv5->dependencies[0].comment ==
-              "Crashes with 1.1.0-2.3.0.");
-
-      assert (fpv5->dependencies[0][0] ==
-              dep (
-                "libmisc",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    nullopt, true, version ("1.1"), true))));
-
-      assert (fpv5->dependencies[0][1] ==
-              dep (
-                "libmisc",
-                optional<dependency_constraint> (
-                  dependency_constraint (
-                    version ("2.3.0"), true, nullopt, true))));
-
-      assert (fpv5->dependencies[1].size () == 1);
-      assert (fpv5->dependencies[1].comment.empty ());
-
-      assert (fpv5->dependencies[1][0] ==
-              dep ("libexp",
-                   optional<dependency_constraint> (
-                     dependency_constraint (
-                       version ("1.0"), false, nullopt, true))));
-
-      assert (fpv5->dependencies[2].size () == 2);
-      assert (fpv5->dependencies[2].comment == "The newer the better.");
-
-      assert (fpv5->dependencies[2][0] == dep ("libstudxml", nullopt));
-      assert (fpv5->dependencies[2][1] == dep ("libexpat", nullopt));
-
-      requirements& fpvr5 (fpv5->requirements);
-      assert (fpvr5.size () == 4);
-
-      assert (fpvr5[0] == strings ({"linux", "windows", "macosx"}));
-      assert (!fpvr5[0].conditional);
-      assert (fpvr5[0].comment == "Symbian support is coming.");
-
-      assert (fpvr5[1] == strings ({"c++11"}));
-      assert (!fpvr5[1].conditional);
-      assert (fpvr5[1].comment.empty ());
-
-      assert (fpvr5[2].empty ());
-      assert (fpvr5[2].conditional);
-      assert (fpvr5[2].comment ==
-              "libc++ standard library if using Clang on Mac OS X.");
-
-      assert (fpvr5[3] == strings ({"vc++ >= 12.0"}));
-      assert (fpvr5[3].conditional);
-      assert (fpvr5[3].comment == "Only if using VC++ on Windows.");
-
-      assert (check_location (fpv5));
-
-      assert (fpv5->sha256sum && *fpv5->sha256sum ==
-        "c5e593d8efdc34a258f8c0b8cc352dc7193ea4a1d666bcf8d48708c7dd82d0d6");
-
-      // Verify libexp package version.
-      //
-      // libexp-+2-1.2
-      //
-      shared_ptr<package> epv (
-        db.load<package> (
-          package_id (package_name ("libexp"), version ("+2-1.2+1"))));
-
-      assert (epv->project == "mathLab");
-      assert (epv->summary == "The exponent");
-      assert (epv->tags == strings ({"mathlab", "c++", "exponent"}));
-      assert (epv->description && *epv->description ==
-              "The exponent math function.");
-      assert (epv->url && *epv->url == "http://www.exp.com");
-      assert (!epv->package_url);
-      assert (epv->email && *epv->email == email ("users@exp.com"));
-      assert (!epv->package_email);
-      assert (epv->build_email && *epv->build_email == "builds@exp.com");
-
-      assert (epv->internal_repository.load () == mr);
-      assert (epv->other_repositories.empty ());
-      assert (epv->priority == priority (priority::low));
-      assert (epv->changes.empty ());
-
-      assert (epv->license_alternatives.size () == 1);
-      assert (epv->license_alternatives[0].size () == 1);
-      assert (epv->license_alternatives[0][0] == "MIT");
-
-      assert (epv->dependencies.size () == 2);
-      assert (epv->dependencies[0].size () == 1);
-      assert (epv->dependencies[0][0] == dep ("libmisc", nullopt));
-
-      assert (epv->dependencies[1].size () == 1);
-      assert (epv->dependencies[1][0] ==
-              dep ("libpq",
-                   optional<dependency_constraint> (
-                     dependency_constraint (
-                       version ("9.0.0"), false, nullopt, true))));
-
-      assert (epv->requirements.empty ());
-
-      db.load (*epv, epv->build_section);
-
-      assert (
-        epv->build_constraints ==
-        build_constraints ({
+    assert (fpv5->changes == ch);
+
+    assert (fpv5->license_alternatives.size () == 2);
+    assert (fpv5->license_alternatives[0].comment ==
+            "If using with GNU TLS.");
+    assert (fpv5->license_alternatives[0].size () == 2);
+    assert (fpv5->license_alternatives[0][0] == "LGPLv2");
+    assert (fpv5->license_alternatives[0][1] == "MIT");
+    assert (fpv5->license_alternatives[1].comment ==
+            "If using with OpenSSL.");
+    assert (fpv5->license_alternatives[1].size () == 1);
+    assert (fpv5->license_alternatives[1][0] == "BSD");
+
+    assert (fpv5->dependencies.size () == 3);
+    assert (fpv5->dependencies[0].size () == 2);
+    assert (fpv5->dependencies[0].comment ==
+            "Crashes with 1.1.0-2.3.0.");
+
+    assert (fpv5->dependencies[0][0] ==
+            dep ("libmisc",
+                 dependency_constraint (
+                   nullopt, true, version ("1.1"), true)));
+
+    assert (fpv5->dependencies[0][1] ==
+            dep ("libmisc",
+                 dependency_constraint (
+                   version ("2.3.0"), true, nullopt, true)));
+
+    assert (fpv5->dependencies[1].size () == 1);
+    assert (fpv5->dependencies[1].comment.empty ());
+
+    assert (fpv5->dependencies[1][0] ==
+            dep ("libexp",
+                 dependency_constraint (
+                   version ("1.0"), false, nullopt, true)));
+
+    assert (fpv5->dependencies[2].size () == 2);
+    assert (fpv5->dependencies[2].comment == "The newer the better.");
+
+    assert (fpv5->dependencies[2][0] == dep ("libstudxml", nullopt));
+    assert (fpv5->dependencies[2][1] == dep ("libexpat", nullopt));
+
+    requirements& fpvr5 (fpv5->requirements);
+    assert (fpvr5.size () == 4);
+
+    assert (fpvr5[0] == strings ({"linux", "windows", "macosx"}));
+    assert (!fpvr5[0].conditional);
+    assert (fpvr5[0].comment == "Symbian support is coming.");
+
+    assert (fpvr5[1] == strings ({"c++11"}));
+    assert (!fpvr5[1].conditional);
+    assert (fpvr5[1].comment.empty ());
+
+    assert (fpvr5[2].empty ());
+    assert (fpvr5[2].conditional);
+    assert (fpvr5[2].comment ==
+            "libc++ standard library if using Clang on Mac OS X.");
+
+    assert (fpvr5[3] == strings ({"vc++ >= 12.0"}));
+    assert (fpvr5[3].conditional);
+    assert (fpvr5[3].comment == "Only if using VC++ on Windows.");
+
+    assert (check_location (fpv5));
+
+    assert (fpv5->sha256sum && *fpv5->sha256sum ==
+            "c5e593d8efdc34a258f8c0b8cc352dc7193ea4a1d666bcf8d48708c7dd82d0d6");
+
+    // Verify libexp package version.
+    //
+    // libexp-+2-1.2
+    //
+    shared_ptr<package> epv (
+      db.load<package> (
+        package_id (package_name ("libexp"), version ("+2-1.2+1"))));
+
+    assert (epv->project == "mathLab");
+    assert (epv->summary == "The exponent");
+    assert (epv->tags == strings ({"mathlab", "c++", "exponent"}));
+    assert (epv->description && *epv->description ==
+            "The exponent math function.");
+    assert (epv->url && *epv->url == "http://www.exp.com");
+    assert (!epv->package_url);
+    assert (epv->email && *epv->email == email ("users@exp.com"));
+    assert (!epv->package_email);
+    assert (epv->build_email && *epv->build_email == "builds@exp.com");
+
+    assert (epv->internal_repository.load () == mr);
+    assert (epv->other_repositories.empty ());
+    assert (epv->priority == priority (priority::low));
+    assert (epv->changes.empty ());
+
+    assert (epv->license_alternatives.size () == 1);
+    assert (epv->license_alternatives[0].size () == 1);
+    assert (epv->license_alternatives[0][0] == "MIT");
+
+    assert (epv->dependencies.size () == 2);
+    assert (epv->dependencies[0].size () == 1);
+    assert (epv->dependencies[0][0] == dep ("libmisc", nullopt));
+
+    assert (epv->dependencies[1].size () == 1);
+    assert (epv->dependencies[1][0] ==
+            dep ("libpq",
+                 dependency_constraint (
+                   version ("9.0.0"), false, nullopt, true)));
+
+    assert (epv->requirements.empty ());
+
+    db.load (*epv, epv->build_section);
+
+    assert (
+      epv->build_constraints ==
+      build_constraints ({
           build_constraint (true, "*", nullopt, "Only supported on Linux."),
-          build_constraint (false, "linux*", nullopt, "")}));
-
-      assert (check_location (epv));
-      assert (epv->sha256sum && *epv->sha256sum ==
-        "bc68940a1b3b7e345cbceac35d308b4e04b304f49ff2087340949f2879709967");
-
-      // Verify libpq package version.
-      //
-      // libpq-0
-      //
-      shared_ptr<package> qpv (
-        db.load<package> (package_id (package_name ("libpq"), version ("0"))));
-
-      assert (qpv->summary == "PostgreSQL C API client library");
-
-      // Verify 'misc' repository.
-      //
-      assert (cr->location.canonical_name () == "pkg:dev.cppget.org/misc");
-      assert (cr->location.string () ==
-              "http://dev.cppget.org/1/misc");
-      assert (cr->display_name.empty ());
-      assert (cr->priority == 0);
-      assert (cr->url && *cr->url == "http://misc.cppget.org/");
-      assert (!cr->email);
-      assert (!cr->summary);
-      assert (!cr->description);
-
-      dir_path crp (cp.directory () / dir_path ("1/misc"));
-      assert (cr->cache_location.path () == crp.normalize ());
-
-      assert (cr->packages_timestamp ==
-              file_mtime (cr->cache_location.path () / packages));
-
-      assert (cr->repositories_timestamp ==
-              file_mtime (cr->cache_location.path () / repositories));
-
-      assert (!cr->internal);
-      assert (cr->prerequisites.empty ());
-      assert (cr->complements.size () == 1);
-      assert (cr->complements[0].load () == tr);
-
-      // Verify libbar package version.
-      //
-      // libbar-2.4.0+3
-      //
-      shared_ptr<package> bpv (
-        db.load<package> (
-          package_id (package_name ("libbar"), version ("2.4.0+3"))));
-
-      assert (check_external (*bpv));
-      assert (bpv->other_repositories.size () == 1);
-      assert (bpv->other_repositories[0].load () == cr);
-      assert (check_location (bpv));
-
-      // Verify libfoo package versions.
-      //
-      // libfoo-0.1
-      //
-      shared_ptr<package> fpv0 (
-        db.load<package> (
-          package_id (package_name ("libfoo"), version ("0.1"))));
-
-      assert (check_external (*fpv0));
-      assert (fpv0->other_repositories.size () == 1);
-      assert (fpv0->other_repositories[0].load () == cr);
-      assert (check_location (fpv0));
-
-      // libfoo-1.2.4-2
-      //
-      shared_ptr<package> fpv6 (
-        db.load<package> (
-          package_id (package_name ("libfoo"), version ("1.2.4+2"))));
-
-      assert (check_external (*fpv6));
-      assert (fpv6->other_repositories.size () == 1);
-      assert (fpv6->other_repositories[0].load () == cr);
-      assert (check_location (fpv6));
-
-      // Verify 'testing' repository.
-      //
-      assert (tr->location.canonical_name () == "pkg:dev.cppget.org/testing");
-      assert (tr->location.string () ==
-              "http://dev.cppget.org/1/testing");
-      assert (tr->display_name.empty ());
-      assert (tr->priority == 0);
-      assert (tr->url && *tr->url == "http://test.cppget.org/hello/");
-      assert (!tr->email);
-      assert (!tr->summary);
-      assert (!tr->description);
-
-      dir_path trp (cp.directory () / dir_path ("1/testing"));
-      assert (tr->cache_location.path () == trp.normalize ());
-
-      assert (tr->packages_timestamp ==
-              file_mtime (tr->cache_location.path () / packages));
-
-      assert (tr->repositories_timestamp ==
-              file_mtime (tr->cache_location.path () / repositories));
-
-      assert (!tr->internal);
-      assert (tr->prerequisites.empty ());
-      assert (tr->complements.size () == 1);
-      assert (tr->complements[0].load () == gr);
-
-      // Verify libmisc package version.
-      //
-      // libmisc-2.4.0
-      //
-      shared_ptr<package> mpv0 (
-        db.load<package> (
-          package_id (package_name ("libmisc"), version ("2.4.0"))));
-
-      assert (check_external (*mpv0));
-      assert (mpv0->other_repositories.size () == 1);
-      assert (mpv0->other_repositories[0].load () == tr);
-      assert (check_location (mpv0));
-
-      // libmisc-2.3.0+1
-      //
-      shared_ptr<package> mpv1 (
-        db.load<package> (
-          package_id (package_name ("libmisc"), version ("2.3.0+1"))));
-
-      assert (check_external (*mpv1));
-      assert (mpv1->other_repositories.size () == 1);
-      assert (mpv1->other_repositories[0].load () == tr);
-      assert (check_location (mpv1));
-
-      // Verify 'staging' repository.
-      //
-      assert (gr->location.canonical_name () == "pkg:dev.cppget.org/staging");
-      assert (gr->location.string () ==
-              "http://dev.cppget.org/1/staging");
-      assert (gr->display_name.empty ());
-      assert (gr->priority == 0);
-      assert (gr->url && *gr->url == "http://dev.cppget.org/");
-      assert (!gr->email);
-      assert (!gr->summary);
-      assert (!gr->description);
-
-      dir_path grp (cp.directory () / dir_path ("1/staging"));
-      assert (gr->cache_location.path () == grp.normalize ());
-
-      assert (gr->packages_timestamp ==
-              file_mtime (gr->cache_location.path () / packages));
-
-      assert (gr->repositories_timestamp ==
-              file_mtime (gr->cache_location.path () / repositories));
-
-      assert (!gr->internal);
-      assert (gr->prerequisites.empty ());
-      assert (gr->complements.empty ());
-
-      // Verify libexpat package version.
-      //
-      // libexpat-5.1
-      //
-      shared_ptr<package> tpv (
-        db.load<package> (
-          package_id (package_name ("libexpat"), version ("5.1"))));
-
-      assert (check_external (*tpv));
-      assert (tpv->other_repositories.size () == 1);
-      assert (tpv->other_repositories[0].load () == gr);
-      assert (check_location (tpv));
-
-      // Verify libgenx package version.
-      //
-      // libgenx-1.0
-      //
-      shared_ptr<package> gpv (
-        db.load<package> (
-          package_id (package_name ("libgenx"), version ("1.0"))));
-
-      assert (check_external (*gpv));
-      assert (gpv->other_repositories.size () == 1);
-      assert (gpv->other_repositories[0].load () == gr);
-      assert (check_location (gpv));
-
-      // Verify libmisc package version.
-      //
-      // libmisc-1.0
-      //
-      shared_ptr<package> mpv2 (
-        db.load<package> (
-          package_id (package_name ("libmisc"), version ("1.0"))));
-
-      assert (check_external (*mpv2));
-      assert (mpv2->other_repositories.size () == 1);
-      assert (mpv2->other_repositories[0].load () == gr);
-      assert (check_location (mpv2));
-
-      // Change package summary, update the object persistent state, rerun
-      // loader and ensure the model were not rebuilt.
-      //
-      bpv->summary = "test";
-      db.update (bpv);
-
-      t.commit ();
-    }
+            build_constraint (false, "linux*", nullopt, "")}));
+
+    assert (check_location (epv));
+    assert (epv->sha256sum && *epv->sha256sum ==
+            "bc68940a1b3b7e345cbceac35d308b4e04b304f49ff2087340949f2879709967");
+
+    // Verify libpq package version.
+    //
+    // libpq-0
+    //
+    shared_ptr<package> qpv (
+      db.load<package> (package_id (package_name ("libpq"), version ("0"))));
+
+    assert (qpv->summary == "PostgreSQL C API client library");
+
+    // Verify 'misc' repository.
+    //
+    assert (cr->location.canonical_name () == "pkg:dev.cppget.org/misc");
+    assert (cr->location.string () ==
+            "http://dev.cppget.org/1/misc");
+    assert (cr->display_name.empty ());
+    assert (cr->priority == 0);
+    assert (cr->interface_url &&
+            *cr->interface_url == "http://misc.cppget.org/");
+    assert (!cr->email);
+    assert (!cr->summary);
+    assert (!cr->description);
+
+    dir_path crp (loadtab.directory () / dir_path ("1/misc"));
+    assert (cr->cache_location.path () == crp.normalize ());
+
+    assert (cr->packages_timestamp ==
+            file_mtime (cr->cache_location.path () / packages));
+
+    assert (cr->repositories_timestamp ==
+            file_mtime (cr->cache_location.path () / repositories));
+
+    assert (!cr->internal);
+    assert (cr->prerequisites.empty ());
+    assert (cr->complements.size () == 1);
+    assert (cr->complements[0].load () == tr);
+
+    // Verify libbar package version.
+    //
+    // libbar-2.4.0+3
+    //
+    shared_ptr<package> bpv (
+      db.load<package> (
+        package_id (package_name ("libbar"), version ("2.4.0+3"))));
+
+    assert (check_external (*bpv));
+    assert (bpv->other_repositories.size () == 1);
+    assert (bpv->other_repositories[0].load () == cr);
+    assert (check_location (bpv));
+
+    // Verify libfoo package versions.
+    //
+    // libfoo-0.1
+    //
+    shared_ptr<package> fpv0 (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("0.1"))));
+
+    assert (check_external (*fpv0));
+    assert (fpv0->other_repositories.size () == 1);
+    assert (fpv0->other_repositories[0].load () == cr);
+    assert (check_location (fpv0));
+
+    // libfoo-1.2.4-2
+    //
+    shared_ptr<package> fpv6 (
+      db.load<package> (
+        package_id (package_name ("libfoo"), version ("1.2.4+2"))));
+
+    assert (check_external (*fpv6));
+    assert (fpv6->other_repositories.size () == 1);
+    assert (fpv6->other_repositories[0].load () == cr);
+    assert (check_location (fpv6));
+
+    // Verify 'testing' repository.
+    //
+    assert (tr->location.canonical_name () == "pkg:dev.cppget.org/testing");
+    assert (tr->location.string () ==
+            "http://dev.cppget.org/1/testing");
+    assert (tr->display_name.empty ());
+    assert (tr->priority == 0);
+    assert (tr->interface_url &&
+            *tr->interface_url == "http://test.cppget.org/hello/");
+    assert (!tr->email);
+    assert (!tr->summary);
+    assert (!tr->description);
+
+    dir_path trp (loadtab.directory () / dir_path ("1/testing"));
+    assert (tr->cache_location.path () == trp.normalize ());
+
+    assert (tr->packages_timestamp ==
+            file_mtime (tr->cache_location.path () / packages));
+
+    assert (tr->repositories_timestamp ==
+            file_mtime (tr->cache_location.path () / repositories));
+
+    assert (!tr->internal);
+    assert (tr->prerequisites.empty ());
+    assert (tr->complements.size () == 1);
+    assert (tr->complements[0].load () == gr);
+
+    // Verify libmisc package version.
+    //
+    // libmisc-2.4.0
+    //
+    shared_ptr<package> mpv0 (
+      db.load<package> (
+        package_id (package_name ("libmisc"), version ("2.4.0"))));
+
+    assert (check_external (*mpv0));
+    assert (mpv0->other_repositories.size () == 1);
+    assert (mpv0->other_repositories[0].load () == tr);
+    assert (check_location (mpv0));
+
+    // libmisc-2.3.0+1
+    //
+    shared_ptr<package> mpv1 (
+      db.load<package> (
+        package_id (package_name ("libmisc"), version ("2.3.0+1"))));
+
+    assert (check_external (*mpv1));
+    assert (mpv1->other_repositories.size () == 1);
+    assert (mpv1->other_repositories[0].load () == tr);
+    assert (check_location (mpv1));
+
+    // Verify 'staging' repository.
+    //
+    assert (gr->location.canonical_name () == "pkg:dev.cppget.org/staging");
+    assert (gr->location.string () ==
+            "http://dev.cppget.org/1/staging");
+    assert (gr->display_name.empty ());
+    assert (gr->priority == 0);
+    assert (gr->interface_url &&
+            *gr->interface_url == "http://dev.cppget.org/");
+    assert (!gr->email);
+    assert (!gr->summary);
+    assert (!gr->description);
+
+    dir_path grp (loadtab.directory () / dir_path ("1/staging"));
+    assert (gr->cache_location.path () == grp.normalize ());
+
+    assert (gr->packages_timestamp ==
+            file_mtime (gr->cache_location.path () / packages));
+
+    assert (gr->repositories_timestamp ==
+            file_mtime (gr->cache_location.path () / repositories));
+
+    assert (!gr->internal);
+    assert (gr->prerequisites.empty ());
+    assert (gr->complements.empty ());
+
+    // Verify libexpat package version.
+    //
+    // libexpat-5.1
+    //
+    shared_ptr<package> tpv (
+      db.load<package> (
+        package_id (package_name ("libexpat"), version ("5.1"))));
+
+    assert (check_external (*tpv));
+    assert (tpv->other_repositories.size () == 1);
+    assert (tpv->other_repositories[0].load () == gr);
+    assert (check_location (tpv));
+
+    // Verify libgenx package version.
+    //
+    // libgenx-1.0
+    //
+    shared_ptr<package> gpv (
+      db.load<package> (
+        package_id (package_name ("libgenx"), version ("1.0"))));
+
+    assert (check_external (*gpv));
+    assert (gpv->other_repositories.size () == 1);
+    assert (gpv->other_repositories[0].load () == gr);
+    assert (check_location (gpv));
+
+    // Verify libmisc package version.
+    //
+    // libmisc-1.0
+    //
+    shared_ptr<package> mpv2 (
+      db.load<package> (
+        package_id (package_name ("libmisc"), version ("1.0"))));
+
+    assert (check_external (*mpv2));
+    assert (mpv2->other_repositories.size () == 1);
+    assert (mpv2->other_repositories[0].load () == gr);
+    assert (check_location (mpv2));
+
+    // Change package summary, update the object persistent state, rerun
+    // the loader and make sure the model were not rebuilt.
+    //
+    bpv->summary = "test";
+    db.update (bpv);
+
+    t.commit ();
+  }
+
+  // Rerun the loader without --force and make sure the model were not
+  // rebuilt.
+  //
+  {
+    cstrings args (loader_args);
+    args.push_back (loadtab.string ().c_str ());
+    args.push_back (nullptr);
+
+    assert (process (args.data ()).wait ());
 
-    assert (process (ld_args).wait ());
     transaction t (db.begin ());
 
     shared_ptr<package> bpv (
@@ -914,11 +1025,27 @@ main (int argc, char* argv[])
 
     t.commit ();
   }
-  // Fully qualified to avoid ambiguity with odb exception.
+
+  // Restore the original setup.
   //
-  catch (const std::exception& e)
   {
-    cerr << e << endl;
-    return 1;
+    cstrings args (loader_args);
+    args.push_back ("--force");
+    args.push_back (loadtab.string ().c_str ());
+    args.push_back (nullptr);
+
+    assert (process (args.data ()).wait ());
+
+    transaction t (db.begin ());
+
+    shared_ptr<package> bpv (
+      db.find<package> (
+        package_id (package_name ("libbar"), version ("2.4.0+3"))));
+
+    // External package summary is not saved.
+    //
+    assert (bpv->summary.empty ());
+
+    t.commit ();
   }
 }