From cf91dfc8271b902419cbaaaa3c44e15d03dc2cf7 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Tue, 26 Nov 2019 18:28:42 +0300
Subject: Drop all database migrations to be backward compatible with only
 0.12.0 (one minor version behind)

---
 migrate/migrate.cxx | 38 ++++----------------------------------
 1 file changed, 4 insertions(+), 34 deletions(-)

(limited to 'migrate')

diff --git a/migrate/migrate.cxx b/migrate/migrate.cxx
index 3e2c53d..c1f4dc1 100644
--- a/migrate/migrate.cxx
+++ b/migrate/migrate.cxx
@@ -207,6 +207,7 @@ create (database& db, bool extra_only) const
 
 // Register the data migration functions for the package database schema.
 //
+#if 0
 template <schema_version v>
 using package_migration_entry_base =
   data_migration_entry<v, LIBBREP_PACKAGE_SCHEMA_VERSION_BASE>;
@@ -218,42 +219,11 @@ struct package_migration_entry: package_migration_entry_base<v>
       : package_migration_entry_base<v> (f, "package") {}
 };
 
-static const package_migration_entry<15>
-package_migrate_v15 ([] (database& db)
+static const package_migration_entry<18>
+package_migrate_v18 ([] (database& db)
 {
-  // Set the buildable flag for the internal repositories.
-  //
-  db.execute ("UPDATE repository SET buildable = internal");
-
-  // Set the buildable flag for the internal non-stub packages.
-  //
-  db.execute ("UPDATE package SET buildable = "
-              "internal_repository_tenant IS NOT NULL AND "
-              "NOT (version_epoch = 0 AND "
-                   "version_canonical_upstream = '' AND "
-                   "version_canonical_release = '~')");
-});
-
-static const package_migration_entry<16>
-package_migrate_v16 ([] (database& db)
-{
-  // Set the zero version revision to NULL.
-  //
-  auto migrate_rev = [&db] (const char* table, const char* column)
-  {
-    db.execute (string ("UPDATE ") + table + " SET " + column + " = NULL " +
-                        "WHERE " + column + " = 0");
-  };
-
-  // The depends package manifest value endpoint versions.
-  //
-  // Note that previously the zero and absent revisions had the same
-  // semantics. Now the semantics differs and the zero revision is preserved
-  // (see libbpkg/manifest.hxx for details).
-  //
-  migrate_rev ("package_dependency_alternatives", "dep_min_version_revision");
-  migrate_rev ("package_dependency_alternatives", "dep_max_version_revision");
 });
+#endif
 
 // main() function
 //
-- 
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