diff --git a/Bugzilla/Install/Localconfig.pm b/Bugzilla/Install/Localconfig.pm
index e5b1bdb76..646d4eea6 100644
--- a/Bugzilla/Install/Localconfig.pm
+++ b/Bugzilla/Install/Localconfig.pm
@@ -56,7 +56,7 @@ use constant LOCALCONFIG_VARS => (
   {name => 'create_htaccess', default => 1,},
   {name => 'webservergroup',  default => \&_sensible_group,},
   {name => 'use_suexec',      default => 0,},
-  {name => 'db_driver',       default => 'mysql',},
+  {name => 'db_driver',       default => 'sqlite',},
   {name => 'db_host',         default => 'localhost',},
   {name => 'db_name',         default => 'bugs',},
   {
@@ -100,7 +100,7 @@ use constant LOCALCONFIG_VARS => (
   {name => 'size_limit',          default => 750000,},
   {name => 'memcached_servers',   default => '',},
   {name => 'memcached_namespace', default => "bugzilla:",},
-  {name => 'urlbase',             default => '',},
+  {name => 'urlbase',             default => 'http://127.0.0.1:3001/'},
   {name => 'canonical_urlbase',   lazy => 1},
   {name => 'logging_method',      default => 'syslog'},
   {name => 'nobody_user',         default => 'nobody@mozilla.org'},
@@ -249,7 +249,7 @@ sub update_localconfig {
     $value = undef
       if ($name eq 'site_wide_secret' and defined $value and length($value) == 256);
 
-    if (!defined $value) {
+    if (!defined $value && $name ne 'canonical_urlbase') {
       push(@new_vars, $name);
       $var->{default} = &{$var->{default}} if ref($var->{default}) eq 'CODE';
       if (exists $answer->{$name}) {
diff --git a/Bugzilla/Localconfig.pm b/Bugzilla/Localconfig.pm
index 7a3a3d26a..b6d264acc 100644
--- a/Bugzilla/Localconfig.pm
+++ b/Bugzilla/Localconfig.pm
@@ -26,7 +26,7 @@ has 'basepath' => (is => 'lazy');
 # Use the site's URL as the default Canonical URL
 sub _build_canonical_urlbase {
   my ($self) = @_;
-  $self->urlbase;
+  $self->urlbase // '';
 }
 
 sub _build_basepath {
diff --git a/Makefile.PL b/Makefile.PL
index 1bc4f05ee..1ae7dc483 100755
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -401,7 +401,7 @@ WriteMakefile(
 
 sub MY::postamble {
   return <<"MAKE";
-GEN_CPANFILE_ARGS = -D better_xff -D mariadb -D jsonrpc -D xmlrpc -D documentation -D pg
+GEN_CPANFILE_ARGS = -D better_xff -D sqlite -D jsonrpc -D xmlrpc -D documentation
 cpanfile: MYMETA.json
 \t\$(PERLRUN) gen-cpanfile.pl \$(GEN_CPANFILE_ARGS)
 
diff --git a/extensions/BugModal/lib/ActivityStream.pm b/extensions/BugModal/lib/ActivityStream.pm
index c3fe4d88d..b65123d8c 100644
--- a/extensions/BugModal/lib/ActivityStream.pm
+++ b/extensions/BugModal/lib/ActivityStream.pm
@@ -357,8 +357,9 @@ sub _add_duplicates_to_stream {
   my $dbh = Bugzilla->dbh;
 
   my $sth = $dbh->prepare("
-        SELECT longdescs.who,
-               UNIX_TIMESTAMP(bug_when), " . $dbh->sql_date_format('bug_when') . ",
+        SELECT longdescs.who, " 
+               . $dbh->sql_date_format('bug_when', '%s') . ", "
+               . $dbh->sql_date_format('bug_when') . ",
                type,
                extra_data
           FROM longdescs
diff --git a/scripts/nagios_blocker_checker.pl b/scripts/nagios_blocker_checker.pl
index 7d04f01f6..695c7a283 100755
--- a/scripts/nagios_blocker_checker.pl
+++ b/scripts/nagios_blocker_checker.pl
@@ -183,8 +183,9 @@
     $where .= " AND bug_severity IN ($severities)";
   }
 
+  my $ts_sql = $dbh->sql_date_format('bugs.creation_ts', '%s');
   my $sql = <<"EOF";
-        SELECT bug_id, bug_severity, UNIX_TIMESTAMP(bugs.creation_ts) AS ts
+        SELECT bug_id, bug_severity, $ts_sql AS ts
           FROM bugs
          WHERE $where
                AND COALESCE(resolution, '') = ''