diff --git a/base/comps/components.toml b/base/comps/components.toml
index a9f322d1324..b0ea3625c37 100644
--- a/base/comps/components.toml
+++ b/base/comps/components.toml
@@ -3546,7 +3546,6 @@ includes = ["**/*.comp.toml", "component-check-disablement.toml", "component-min
 [components.python-botocore]
 [components.python-breathe]
 [components.python-bsddb3]
-[components.python-build]
 [components.python-cached_property]
 [components.python-cachetools]
 [components.python-cairocffi]
diff --git a/base/comps/python-build/python-build.comp.toml b/base/comps/python-build/python-build.comp.toml
new file mode 100644
index 00000000000..aeab7d4a9e0
--- /dev/null
+++ b/base/comps/python-build/python-build.comp.toml
@@ -0,0 +1,11 @@
+# AZL does not ship python3-uv or python3-build+uv/+virtualenv extras subpackages.
+# The extras bcond (default ON via %{undefined rhel}) pulls uv into BuildRequires
+# via %pyproject_buildrequires -x virtualenv,uv, causing BR-unresolvable failures.
+#
+# Tests are disabled to align with RHEL — the spec notes "not all test dependencies
+# are included in RHEL: filelock, pytest-mock". The dynamic test BRs (via -g test)
+# create fragile ordering dependencies in the Koji nightly build tag, causing
+# BR-unresolvable failures (task 2593995).
+# %pyproject_check_import still runs as a basic sanity check.
+[components.python-build]
+build.without = ["extras", "tests"]
diff --git a/locks/python-build.lock b/locks/python-build.lock
index 988a6742109..d60f7f5ce88 100644
--- a/locks/python-build.lock
+++ b/locks/python-build.lock
@@ -2,5 +2,5 @@
 version = 1
 import-commit = '30b4e152e5d7c953489ac1ede1453523e1831387'
 upstream-commit = '30b4e152e5d7c953489ac1ede1453523e1831387'
-input-fingerprint = 'sha256:ae84fee305eb05777ea00ff61f6f7c38f21311a598bebdffd49c6c0d7a5a7fb4'
+input-fingerprint = 'sha256:2c924a7df146d698b268c844cfc23c2743f859ccade45b5b0e964aa781aa31d7'
 resolution-input-hash = 'sha256:466421704711c4fd3c71f0b2ed715a0e61d49e3e26f3a2637fee755795849c8e'
diff --git a/specs/p/python-build/python-build.azl.macros b/specs/p/python-build/python-build.azl.macros
new file mode 100644
index 00000000000..0dbb3f29698
--- /dev/null
+++ b/specs/p/python-build/python-build.azl.macros
@@ -0,0 +1,4 @@
+# Macros file automatically generated by azldev.
+# Do not edit manually; changes will be overwritten.
+%_without_extras 1
+%_without_tests 1
diff --git a/specs/p/python-build/python-build.spec b/specs/p/python-build/python-build.spec
index 7fdea358e0b..a956ed311d7 100644
--- a/specs/p/python-build/python-build.spec
+++ b/specs/p/python-build/python-build.spec
@@ -2,7 +2,7 @@
 ## (rpmautospec version 0.8.3)
 ## RPMAUTOSPEC: autorelease, autochangelog
 %define autorelease(e:s:pb:n) %{?-p:0.}%{lua:
-    release_number = 5;
+    release_number = 6;
     base_release_number = tonumber(rpm.expand("%{?-b*}%{!?-b:1}"));
     print(release_number + base_release_number - 1);
 }%{?-e:.%{-e*}}%{?-s:.%{-s*}}%{!?-n:%{?dist}}
@@ -11,6 +11,9 @@
 # This spec file has been modified by azldev to include build configuration overlays.
 # Do not edit manually; changes may be overwritten.
 
+# All Azure Linux specs with overlays include this macro file, irrespective of whether new macros have been added.
+%{load:%{_sourcedir}/python-build.azl.macros}
+
 # not all test dependencies are included in RHEL: filelock, pytest-mock
 %bcond tests %{undefined rhel}
 # uv has many build dependencies which are not included in RHEL;
@@ -27,6 +30,7 @@ Summary:        A simple, correct PEP517 package builder
 License:        MIT
 URL:            https://github.com/pypa/build
 Source0:        %{url}/archive/%{version}/%{pypi_name}-%{version}.tar.gz
+Source9999: python-build.azl.macros
 
 # downstream-only
 Patch:          0001-fedora-disable-some-build-requirements.patch
@@ -92,6 +96,9 @@ A simple, correct PEP517 package builder.
 
 %changelog
 ## START: Generated by rpmautospec
+* Fri May 29 2026 Autumn Nash <autumnnash@microsoft.com> - 1.3.0-6
+- python-build: disable tests bcond to fix BR-unresolvable nightly failure
+
 * Thu Apr 30 2026 Daniel McIlvaney <damcilva@microsoft.com> - 1.3.0-5
 - feat: introduce deterministic commit resolution via Azure Linux lock file