restore the ld.so.conf.d file to workaround mock issue (#2166028)

ghc.spec

@@ -88,7 +88,7 @@ Version: 9.2.5
 # - release can only be reset if *all* library versions get bumped simultaneously
 #   (sometimes after a major release)
 # - minor release numbers for a branch should be incremented monotonically
-Release: 125%{?dist}
+Release: 126%{?dist}
 Summary: Glasgow Haskell Compiler
 
 License: BSD and HaskellReport
@@ -586,12 +586,15 @@ sed -i -e 's!^library-dirs: %{ghclibdir}/rts!&\ndynamic-library-dirs: %{_ghcdynl
 %if %{defined _ghcdynlibdir}
 %if "%_ghcdynlibdir" != "%_libdir"
 mkdir -p %{buildroot}%{_sysconfdir}/ld.so.conf.d
-echo "%{ghclibplatform}" > %{buildroot}%{_sysconfdir}/ld.so.conf.d/%{name}.conf
+echo "%{_ghcdynlibdir}" > %{buildroot}%{_sysconfdir}/ld.so.conf.d/%{name}.conf
 %endif
-# avoid 'E: binary-or-shlib-defines-rpath'
 for i in $(find %{buildroot} -type f -executable -exec sh -c "file {} | grep -q 'dynamically linked'" \; -print); do
   chrpath -d $i
 done
+%else
+# https://bugzilla.redhat.com/show_bug.cgi?id=2166028
+mkdir -p %{buildroot}%{_sysconfdir}/ld.so.conf.d
+echo "%{ghclibplatform}" > %{buildroot}%{_sysconfdir}/ld.so.conf.d/%{name}.conf
 %endif
 
 # containers src moved to a subdir
@@ -646,11 +649,9 @@ fi\
 %merge_filelist rts base
 %endif
 
-%if %{defined _ghcdynlibdir}
-%if "%_ghcdynlibdir" != "%_libdir"
+%if "%{?_ghcdynlibdir}" != "%_libdir"
 echo "%{_sysconfdir}/ld.so.conf.d/%{name}.conf" >> %{name}-base.files
 %endif
-%endif
 
 # add rts libs
 %if %{with hadrian}
@@ -984,6 +985,9 @@ env -C %{ghc_html_libraries_dir} ./gen_contents_index
 
 
 %changelog
+* Sat Feb  4 2023 Jens Petersen <petersen@redhat.com> - 9.2.5-126
+- add back ld.so.conf.d file to workaround mock install issue (#2166028)
+
 * Mon Jan 30 2023 Jens Petersen <petersen@redhat.com> - 9.2.5-125
 - rebase to ghc-9.2.5 from ghc9.2
 - fully Obsoletes ghc9.2*