Do not provide pkgconfig(libpq) to not trick packages that actually require libpq-devel

Resolves: #1980992

postgresql.spec

@@ -63,7 +63,7 @@ Summary: PostgreSQL client programs
 Name: postgresql
 %global majorversion 13
 Version: %{majorversion}.3
-Release: 5%{?dist}
+Release: 6%{?dist}
 
 # The PostgreSQL license is very similar to other MIT licenses, but the OSI
 # recognizes it as an independent license, so we do as well.
@@ -181,7 +181,8 @@ BuildRequires:	libicu-devel
 %endif
 
 # https://bugzilla.redhat.com/1464368
-%global __provides_exclude_from %{_libdir}/pgsql
+# and do not provide pkgconfig RPM provides (RHBZ#1980992)
+%global __provides_exclude_from %{_libdir}/(pgsql|pkgconfig)
 
 %description
 PostgreSQL is an advanced Object-Relational database management system (DBMS).
@@ -1218,7 +1219,12 @@ make -C postgresql-setup-%{setup_version} check
 
 
 %changelog
-* Wed Jul 22 2021 Filip Januš <fjanus@redhat.com> - 13.3-5
+* Thu Jul 22 2021 Honza Horak <hhorak@redhat.com> - 13.3-6
+- Do not provide pkgconfig(libpq) to not trick packages that actually require
+  libpq-devel
+  Resolves: #1980992
+
+* Thu Jul 22 2021 Filip Januš <fjanus@redhat.com> - 13.3-5
 - Add explicit conflict between private-devel and libpq-devel
 
 * Wed Jul 21 2021 Filip Januš <fjanus@redhat.com> - 13.3-4