diff --git a/0001-epol-compat-test.patch b/0001-epol-compat-test.patch
new file mode 100644
index 0000000000000000000000000000000000000000..3c21b468826d19c205388bf71915898e6b39fd0d
--- /dev/null
+++ b/0001-epol-compat-test.patch
@@ -0,0 +1,21 @@
+--- a/src/Data/List/Extra.hs	2001-09-09 09:46:40.000000000 +0800
++++ b/src/Data/List/Extra.hs	2026-09-18 20:19:11.375982185 +0800
+@@ -36,6 +36,8 @@
+     concatUnzip, concatUnzip3,
+     zipFrom, zipWithFrom, zipWithLongest,
+     replace, merge, mergeBy,
++    -- * EPOL compatibility test (do not keep in production)
++    epolCompatTest,
+     ) where
+ 
+ import Partial
+@@ -924,3 +926,9 @@
+     go [] (_:_) = LT
+     go (_:_) [] = GT
+     go (_:xs) (_:ys) = go xs ys
++
++
++-- | Sentinel used to force a Haskell ABI/hash change for EPOL compatibility CI.
++--   Downstream packages should still compile; only extra's unit id changes.
++epolCompatTest :: Int
++epolCompatTest = 1
diff --git a/ghc-extra.spec b/ghc-extra.spec
index 97662a76a616c094ca8bc82a3f71fc53f87d05c5..affc8c084bc8cc8799648a186cb2bd75817267c3 100644
--- a/ghc-extra.spec
+++ b/ghc-extra.spec
@@ -3,15 +3,21 @@
 %global pkgver %{pkg_name}-%{version}
 %{?haskell_setup}
 
+# Test-only: drop libHSextra ELF Provides so rpm-check reports "removed PROVIDES".
+# Ability then puts reverse runtime deps into official_rebuild. Remove after the test.
+%global __provides_exclude %{?__provides_exclude}%{?__provides_exclude:|}^libHSextra.*
+
 Name:           ghc-%{pkg_name}
 Version:        1.7.16
-Release:    1%{?dist}
+Release:        2%{?dist}
 Summary:        Extra Haskell functions
 
 License:        BSD-3-Clause
 Url:            https://hackage.haskell.org/package/%{pkg_name}
 Source0:        https://hackage.haskell.org/package/%{pkgver}/%{pkgver}.tar.gz
 Source1:        https://hackage.haskell.org/package/%{pkgver}/%{pkg_name}.cabal#/%{pkgver}.cabal
+# Test-only: keep a tiny source delta; official rebuild is triggered by dropping libHSextra Provides.
+Patch0:         0001-epol-compat-test.patch
 
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-rpm-macros
@@ -48,8 +54,7 @@ with "Data.List.Extra" if they need the extra functionality.
 
 %package devel
 Summary:        Haskell %{pkg_name} library development files
-Provides:       %{name}-static = %{version}-%{release}
-Provides:       %{name}-static = %{version}-%{release}
+# Test-only: drop ghc-extra-static Provides so ability sees removed PROVIDES vs 1.7.16-1.
 %if %{defined ghc_version}
 Requires:       ghc-compiler = %{ghc_version}
 %endif
@@ -84,6 +89,7 @@ This package provides the Haskell %{pkg_name} profiling library.
 %prep
 %setup -q -n %{pkgver}
 dos2unix -k -n %{SOURCE1} %{pkg_name}.cabal
+%patch0 -p1
 
 
 %build
@@ -114,6 +120,10 @@ dos2unix -k -n %{SOURCE1} %{pkg_name}.cabal
 
 
 %changelog
+* Fri Sep 18 2026 bbrucezhang <bbrucezhang@tencent.com> - 1.7.16-2
+- [Type] enhancement
+- [DESC] Test-only EPOL official-rebuild delta: drop libHSextra and ghc-extra-static Provides
+
 * Sun Sep 21 2025 ocs-bot <ocs-bot@opencloudos.tech> - 1.7.16-1
 - [Type] other 
 - [DESC] update to Version 1.7.16