fix selecting grub2-efi on UEFI (mga#18646)

the issue is that we select basesystem which pulls bootloader -> grub2
then later grub2-efi b/c we're on UEFI which results in:

we don't use the right API for selecting packages which results in:
* preferring grub2 over lilo,grub2-efi,grub
* replacing bootloader with grub2
* selecting grub2-2.02-0.git10457.6.mga6.x86_64
(...)
* selecting grub2-efi because of needed for UEFI boot
(...)
* no packages match grub2-efi (it is either in skip.list or already rejected)
* ERROR: selection failed: grub2-efi-2.02-0.git10457.6.mga6.x86_64 (due
  to conflicts with grub2-2.02-0.git10457.6.mga6.x86_64)

the proper fix would be to use a better URPM API but it's just as simple
to pick the bootloader before picking basesystem...

2 files changed, 16 insertions, 2 deletions

diff --git a/perl-install/install/NEWS b/perl-install/install/NEWS
index 3596ca9de..fd1551927 100644
--- a/perl-install/install/NEWS
+++ b/perl-install/install/NEWS
@@ -1,3 +1,5 @@
+- fix selecting grub2-efi on UEFI (mga#18646)
+
 Version 17.34.1 - 6 June 2016
 
 - fix displaying release notes with WebKit2
diff --git a/perl-install/install/any.pm b/perl-install/install/any.pm
index c6a226e7e..20fd25bc3 100644
--- a/perl-install/install/any.pm
+++ b/perl-install/install/any.pm
@@ -612,6 +612,7 @@ sub setPackages {
 	    install::pkgs::select_by_package_names($urpm, [ $devel_kernel_pkg ], 1);
 	}
 
+	install::pkgs::select_by_package_names_or_die($urpm, default_bootloader(), 1);
 	install::pkgs::select_by_package_names_or_die($urpm, ['basesystem'], 1);
 
 	my $rpmsrate_flags_was_chosen = $o->{rpmsrate_flags_chosen};
@@ -793,6 +794,19 @@ sub rpmsrate_always_flags {
     $rpmsrate_flags_chosen;
 }
 
+sub default_bootloader() {
+    my $p;
+    # we only support grub2-efi on UEFI:
+    if (is_uefi()) {
+       log::l("selecting grub2-efi because it's needed for UEFI boot");
+       $p = 'grub2-efi';
+    } else {
+       log::l("defaulting to grub");
+       $p = 'grub2-efi';
+    }
+    [ $p ];
+}
+
 =item default_packages($o)
 
 Selects default packages to install according to configuration (FS, HW, ...)
@@ -831,8 +845,6 @@ sub default_packages {
     # only needed for CDs/DVDs installations:
     add_n_log("method='cdrom'", 'perl-Hal-Cdroms') if $o->{method} eq 'cdrom';
     add_n_log("needed for VMware hypervisor", 'open-vm-tools') if detect_devices::is_vmware();
-    # we only support grub2-efi on UEFI:
-    add_n_log("needed for UEFI boot", 'grub2-efi') if is_uefi();
 
     my $dmi_BIOS = detect_devices::dmidecode_category('BIOS');
     my $dmi_Base_Board = detect_devices::dmidecode_category('Base Board');