photon-os-installer: add btrfs-progs, fix pkg_resources deprecation

- Add btrfs-progs to target system packages when btrfs filesystem is
  selected. Without it, dracut cannot include the btrfs module in the
  initramfs and the system fails to boot.
- Replace deprecated pkg_resources with importlib.metadata (Python 3.14
  removes pkg_resources).

The btrfs-progs source change is in the photon-os-installer repository:
vmware/photon-os-installer#40

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

Author: root

SPECS/photon-os-installer/config.yaml

@@ -1,6 +1,6 @@
 sources:
 - archive: photon-os-installer-2.7.tar.gz
-  archive_sha512sum: 9c2b6df1e9136e94db1451064b51a286b2894849b309dde9539cb9df4fc82e807c74ccb0f7795d7d1d5b2c1ea856dfb38623e1c08e94c567696a637ca6f75fe8
+  archive_sha512sum: ad09f965513fdbd83ca2a02346abb1bf3c8b77f85581ef3448c59181d8f207a2b741d55b919912032e99449857c8d1380917b419b282cc12b4140bcbb0f230dd
   skip_validation: true
   spdx:
     package:

SPECS/photon-os-installer/fix-pkg-resources.patch

@@ -0,0 +1,30 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Factory AI Bot <factory-droid[bot]@users.noreply.github.com>
+Date: Mon, 30 Mar 2026 20:00:00 +0200
+Subject: [PATCH] Replace deprecated pkg_resources with importlib.metadata
+
+Python 3.14 deprecates pkg_resources. Use importlib.metadata.version()
+instead, matching the fix already present in upstream master.
+
+---
+ photon_installer/__init__.py | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/photon_installer/__init__.py b/photon_installer/__init__.py
+--- a/photon_installer/__init__.py
++++ b/photon_installer/__init__.py
+@@ -5,7 +5,7 @@
+ 
+ import sys
+ import glob
+-import pkg_resources
++from importlib.metadata import version as _get_version
+ from os.path import dirname, basename, isfile, join
+ 
+ 
+@@ -13,4 +13,4 @@ modules = glob.glob(join(dirname(__file__), "*.py"))
+ __all__ = [ basename(f)[:-3] for f in modules if isfile(f) and not f.endswith('__init__.py')]
+ sys.path.append(dirname(__file__))
+ 
+-__version__ = pkg_resources.get_distribution(__name__).version
++__version__ = _get_version(__name__)

SPECS/photon-os-installer/photon-os-installer.spec

@@ -5,7 +5,7 @@
 Summary:       Photon OS Installer
 Name:          photon-os-installer
 Version:       2.7
-Release:       5%{?dist}
+Release:       6%{?dist}
 Group:         System Environment/Base
 Vendor:        VMware, Inc.
 Distribution:  Photon
@@ -16,6 +16,7 @@ Source1: license.txt
 %include %{SOURCE1}
 
 Patch0: 0001-Use-mkpasswd-to-generate-password-hash.patch
+Patch1: fix-pkg-resources.patch
 
 BuildRequires: python3-devel
 BuildRequires: python3-pyinstaller
@@ -70,6 +71,9 @@ rm -rf %{buildroot}
 %{_bindir}/photon-iso-builder
 
 %changelog
+* Thu Apr 02 2026 Factory AI Bot <factory-droid[bot]@users.noreply.github.com> 2.7-6
+- Add btrfs-progs to install list when btrfs filesystem is selected
+- Replace deprecated pkg_resources with importlib.metadata
 * Tue Mar 24 2026 Shreenidhi Shedi <shreenidhi.shedi@broadcom.com> 2.7-5
 - Use mkpasswd to generate password
 * Wed Mar 18 2026 Prashant S Chauhan <prashant.singh-chauhan@broadcom.com> 2.7-4