undefine %debug_package rather than %_enable_debug_packages

avoids "Empty %files file debugsourcefiles.list" error
See https://bugzilla.redhat.com/show_bug.cgi?id=2292419

ghc-rpm-macros.spec

@@ -7,7 +7,7 @@
 %endif
 
 Name:           ghc-rpm-macros
-Version:        2.7.0
+Version:        2.7.1
 Release:        1%{?dist}
 Summary:        RPM macros for building Haskell packages for GHC
 
@@ -205,6 +205,9 @@ mkdir -p %{buildroot}%{_docdir}/ghc/html/libraries
 
 
 %changelog
+* Sat Jun 15 2024 Jens Petersen <petersen@redhat.com> - 2.7.1-1
+- build macros now undefine debug_package rather than _enable_debug_packages
+
 * Mon Mar 18 2024 Jens Petersen <petersen@redhat.com> - 2.7.0-1
 - rename no-prof subpackage to quick
 - quick: add ghc_haddocks override

macros.ghc

@@ -14,14 +14,14 @@ LANG=C.utf8\
 # ghc_bin_build: -W: use default ghc (ie ignore ghc_name)
 %ghc_bin_build(W)\
 %ghc_fix_doc_perms\
-%{?!ghc_debuginfo:%undefine _enable_debug_packages}\
+%{?!ghc_debuginfo:%global debug_package %{nil}}\
 %cabal_configure\
 %cabal build %{?ghc_smp_mflags} %{?cabal_build_options}
 
 # ghc_lib_build_without_haddock [name] [version]
 %ghc_lib_build_without_haddock()\
 %ghc_fix_doc_perms\
-%{?!ghc_debuginfo:%undefine _enable_debug_packages}\
+%{?!ghc_debuginfo:%global debug_package %{nil}}\
 %if 0%{?rhel} && 0%{?rhel} < 8\
 licensedirversion=%{?2:-%2}\
 %endif\