From a27f1874316a8e0b4cd5b0a0a19e3c871bfc5d8f Mon Sep 17 00:00:00 2001
From: James Le Cuirot <jlecuirot@microsoft.com>
Date: Wed, 28 Jan 2026 16:34:22 +0000
Subject: [PATCH] Drop the per-OEM USE flags

Having a USE flag per OEM is unnecessary when we only really need to
know whether the package will be installed in an OEM sysext or not. A
single USE flag could do this, but our existing flatcar_target() helper
avoids the complexity of binpkg-multi-instance. The flag names were also
prone to conflicts (e.g. qemu) and we don't currently make use of them
anyway.

Signed-off-by: James Le Cuirot <jlecuirot@microsoft.com>
---
 build_library/oem_sysexts.sh   |  2 +-
 build_library/test_oem_pkgs    | 42 ----------------------------------
 build_library/vm_image_util.sh | 31 +------------------------
 3 files changed, 2 insertions(+), 73 deletions(-)
 delete mode 100755 build_library/test_oem_pkgs

diff --git a/build_library/oem_sysexts.sh b/build_library/oem_sysexts.sh
index 7d50efc4be..68fea06c26 100644
--- a/build_library/oem_sysexts.sh
+++ b/build_library/oem_sysexts.sh
@@ -75,7 +75,7 @@ get_oem_sysext_matrix() {
   local -a matrix=()
   local oem_id
   for oem_id in "${oem_ids[@]}"; do
-    matrix+=("oem-${oem_id}|coreos-base/oem-${oem_id}|${oem_id}")
+    matrix+=("oem-${oem_id}|coreos-base/oem-${oem_id}|")
   done
 
   local -n matrix_ref="${list_var_name}"
diff --git a/build_library/test_oem_pkgs b/build_library/test_oem_pkgs
deleted file mode 100755
index b6c1230c09..0000000000
--- a/build_library/test_oem_pkgs
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/bin/bash
-
-# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-SCRIPT_ROOT=$(readlink -f $(dirname "$0")/..)
-. "${SCRIPT_ROOT}/common.sh" || exit 1
-. "${BUILD_LIBRARY_DIR}/vm_image_util.sh" || exit 1
-
-# We're invoked only by build_image, which runs in the chroot
-assert_inside_chroot
-
-# Die on any errors
-switch_to_strict_mode
-
-# all of this is amd64 only right now
-BOARD="amd64-usr"
-
-oem_uses() {
-  local vm oem="$1"
-  for vm in "${VALID_IMG_TYPES[@]}"; do
-    local oem_var="IMG_${vm}_OEM_PACKAGE"
-    local use_var="IMG_${vm}_OEM_USE"
-    if [[ "${!oem_var}" == "${oem}" && -n "${!use_var}" ]]; then
-      echo "${!use_var}"
-    fi
-  done | sort -u
-}
-
-for oem in "${VALID_OEM_PACKAGES[@]/#/oem-}"; do
-  uses=( $(oem_uses "${oem}") )
-  if [[ ${#uses} -eq 0 ]]; then
-    uses=( "" )
-  fi
-
-  for use in "${uses[@]}"; do
-    info "Checking ${oem}${use:+[${use}]}"
-    USE="${use}" emerge-${BOARD} --usepkg --getbinpkg \
-        --emptytree --pretend --verbose "coreos-base/${oem}"
-  done
-done
diff --git a/build_library/vm_image_util.sh b/build_library/vm_image_util.sh
index 4d4ab65af4..0ef4f6bcee 100644
--- a/build_library/vm_image_util.sh
+++ b/build_library/vm_image_util.sh
@@ -100,12 +100,6 @@ IMG_DEFAULT_OEM_PACKAGE=
 # Forced OEM package name overriding what may be in the format
 IMG_FORCE_OEM_PACKAGE=
 
-# USE flags for the OEM package
-IMG_DEFAULT_OEM_USE=
-
-# Forced USE flags for the OEM package
-IMG_FORCE_OEM_USE=
-
 # If set install the given package name to the OEM sysext image
 IMG_DEFAULT_OEM_SYSEXT=
 
@@ -141,7 +135,6 @@ IMG_DEFAULT_CPUS=2
 IMG_qemu_uefi_DISK_FORMAT=qcow2
 IMG_qemu_uefi_DISK_LAYOUT=vm
 IMG_qemu_uefi_CONF_FORMAT=qemu_uefi
-IMG_qemu_uefi_OEM_USE=qemu
 IMG_qemu_uefi_OEM_PACKAGE=common-oem-files
 IMG_qemu_uefi_OEM_SYSEXT=oem-qemu
 
@@ -190,7 +183,6 @@ IMG_vagrant_parallels_OEM_PACKAGE=oem-vagrant
 IMG_vmware_DISK_FORMAT=vmdk_scsi
 IMG_vmware_DISK_LAYOUT=vm
 IMG_vmware_CONF_FORMAT=vmx
-IMG_vmware_OEM_USE=vmware
 IMG_vmware_OEM_PACKAGE=common-oem-files
 IMG_vmware_OEM_SYSEXT=oem-vmware
 
@@ -199,12 +191,10 @@ IMG_vmware_ova_DISK_FORMAT=vmdk_stream
 IMG_vmware_ova_DISK_LAYOUT=vm
 IMG_vmware_ova_CONF_FORMAT=ovf_vmware
 IMG_vmware_ova_BUNDLE_FORMAT=ova
-IMG_vmware_ova_OEM_USE=vmware
 IMG_vmware_ova_OEM_PACKAGE=common-oem-files
 IMG_vmware_ova_OEM_SYSEXT=oem-vmware
 
 ## vmware_raw
-IMG_vmware_raw_OEM_USE=vmware
 IMG_vmware_raw_OEM_PACKAGE=common-oem-files
 IMG_vmware_raw_OEM_SYSEXT=oem-vmware
 
@@ -222,11 +212,9 @@ IMG_parallels_CONF_FORMAT=pvs
 
 ## ami
 IMG_ami_vmdk_DISK_FORMAT=vmdk_stream
-IMG_ami_vmdk_OEM_USE=ami
 IMG_ami_vmdk_OEM_PACKAGE=common-oem-files
 IMG_ami_vmdk_SYSEXT=oem-ami
 IMG_ami_vmdk_DISK_LAYOUT=vm
-IMG_ami_OEM_USE=ami
 IMG_ami_OEM_PACKAGE=common-oem-files
 IMG_ami_OEM_SYSEXT=oem-ami
 IMG_ami_DISK_LAYOUT=vm
@@ -235,13 +223,11 @@ IMG_ami_DISK_LAYOUT=vm
 IMG_openstack_DISK_FORMAT=qcow2
 IMG_openstack_DISK_LAYOUT=vm
 IMG_openstack_OEM_PACKAGE=common-oem-files
-IMG_openstack_OEM_USE=openstack
 IMG_openstack_OEM_SYSEXT=oem-openstack
 
 ## openstack but without a resized root partition for more flexibility
 IMG_openstack_mini_DISK_FORMAT=qcow2
 IMG_openstack_mini_OEM_PACKAGE=common-oem-files
-IMG_openstack_mini_OEM_USE=openstack
 IMG_openstack_mini_OEM_SYSEXT=oem-openstack
 
 ## pxe, which is an cpio image
@@ -260,7 +246,6 @@ IMG_iso_MEM=2048
 IMG_gce_DISK_LAYOUT=vm
 IMG_gce_CONF_FORMAT=gce
 IMG_gce_OEM_PACKAGE=common-oem-files
-IMG_gce_OEM_USE=gce
 IMG_gce_OEM_SYSEXT=oem-gce
 
 ## rackspace
@@ -280,7 +265,6 @@ IMG_cloudstack_vhd_OEM_PACKAGE=oem-cloudstack
 
 ## digitalocean
 IMG_digitalocean_OEM_PACKAGE=common-oem-files
-IMG_digitalocean_OEM_USE=digitalocean
 IMG_digitalocean_OEM_SYSEXT=oem-digitalocean
 
 ## exoscale
@@ -290,25 +274,21 @@ IMG_exoscale_OEM_PACKAGE=oem-exoscale
 ## azure
 IMG_azure_DISK_FORMAT=vhd_fixed
 IMG_azure_DISK_LAYOUT=azure
-IMG_azure_OEM_USE=azure
 IMG_azure_OEM_PACKAGE=common-oem-files
 IMG_azure_OEM_SYSEXT=oem-azure
 
 ## hetzner
 IMG_hetzner_DISK_LAYOUT=vm
-IMG_hetzner_OEM_USE=hetzner
 IMG_hetzner_OEM_PACKAGE=common-oem-files
 IMG_hetzner_OEM_SYSEXT=oem-hetzner
 
 ## hyper-v
 IMG_hyperv_DISK_FORMAT=vhd
-IMG_hyperv_OEM_USE=hyperv
 IMG_hyperv_OEM_PACKAGE=common-oem-files
 IMG_hyperv_OEM_SYSEXT=oem-hyperv
 
 ## hyper-v vhdx
 IMG_hyperv_vhdx_DISK_FORMAT=vhdx
-IMG_hyperv_vhdx_OEM_USE=hyperv
 IMG_hyperv_vhdx_OEM_PACKAGE=common-oem-files
 IMG_hyperv_vhdx_OEM_SYSEXT=oem-hyperv
 
@@ -319,13 +299,11 @@ IMG_cloudsigma_OEM_PACKAGE=oem-cloudsigma
 ## packet
 IMG_packet_OEM_PACKAGE=common-oem-files
 IMG_packet_OEM_SYSEXT=oem-packet
-IMG_packet_OEM_USE=packet
 
 ## scaleway
 IMG_scaleway_DISK_FORMAT=qcow2
 IMG_scaleway_DISK_LAYOUT=vm
 IMG_scaleway_OEM_PACKAGE=common-oem-files
-IMG_scaleway_OEM_USE=scaleway
 IMG_scaleway_OEM_SYSEXT=oem-scaleway
 IMG_scaleway_DISK_EXTENSION=qcow2
 
@@ -333,34 +311,29 @@ IMG_scaleway_DISK_EXTENSION=qcow2
 IMG_stackit_DISK_FORMAT=qcow2
 IMG_stackit_DISK_LAYOUT=vm
 IMG_stackit_OEM_PACKAGE=common-oem-files
-IMG_stackit_OEM_USE=stackit
 IMG_stackit_OEM_SYSEXT=oem-stackit
 
 ## kubevirt
 IMG_kubevirt_DISK_FORMAT=qcow2
 IMG_kubevirt_DISK_LAYOUT=vm
 IMG_kubevirt_OEM_PACKAGE=common-oem-files
-IMG_kubevirt_OEM_USE=kubevirt
 IMG_kubevirt_OEM_SYSEXT=oem-kubevirt
 IMG_kubevirt_DISK_EXTENSION=qcow2
 
 ## akamai (Linode)
 IMG_akamai_DISK_LAYOUT=vm
 IMG_akamai_OEM_PACKAGE=common-oem-files
-IMG_akamai_OEM_USE=akamai
 IMG_akamai_OEM_SYSEXT=oem-akamai
 
 # proxmoxve
 IMG_proxmoxve_DISK_FORMAT=qcow2
 IMG_proxmoxve_DISK_LAYOUT=vm
 IMG_proxmoxve_OEM_PACKAGE=common-oem-files
-IMG_proxmoxve_OEM_USE=proxmoxve
 IMG_proxmoxve_OEM_SYSEXT=oem-proxmoxve
 
 ## nutanix
 IMG_nutanix_DISK_FORMAT=qcow2
 IMG_nutanix_DISK_LAYOUT=vm
-IMG_nutanix_OEM_USE=nutanix
 IMG_nutanix_OEM_PACKAGE=common-oem-files
 IMG_nutanix_OEM_SYSEXT=oem-nutanix
 
@@ -397,12 +370,10 @@ set_vm_type() {
 
 # Validate and set the oem package, colon delimited USE optional
 set_vm_oem_pkg() {
-    local oem_pkg="${1%:*}" oem_use="${1##*:}"
-    local valid_pkg
+    local oem_pkg="${1}" valid_pkg
     for valid_pkg in "${VALID_OEM_PACKAGES[@]}"; do
         if [[ "${oem_pkg}" == "${valid_pkg}" ]]; then
             IMG_FORCE_OEM_PACKAGE="oem-${oem_pkg}"
-            IMG_FORCE_OEM_USE="${oem_use}"
             return 0
         fi
     done