doesn't build with system lua-5.4: add %bcond

ghc-hslua.spec

@@ -1,6 +1,8 @@
 # generated by cabal-rpm-2.0.6
 # https://docs.fedoraproject.org/en-US/packaging-guidelines/Haskell/
 
+%bcond_with system_lua
+
 %global pkg_name hslua
 %global pkgver %{pkg_name}-%{version}
 
@@ -8,7 +10,7 @@
 
 Name:           ghc-%{pkg_name}
 Version:        1.0.3.2
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Bindings to Lua, an embeddable scripting language
 
 License:        MIT
@@ -28,6 +30,9 @@ BuildRequires:  ghc-mtl-prof
 BuildRequires:  ghc-text-prof
 BuildRequires:  lua-devel
 # End cabal-rpm deps
+%if %{without system_lua}
+Provides:       bundled(lua) = 5.3.5
+%endif
 
 %description
 HsLua provides bindings, wrappers, types, and helper functions to bridge
@@ -77,10 +82,11 @@ This package provides the Haskell %{pkg_name} profiling library.
 %setup -q -n %{pkgver}
 chmod a-x CHANGELOG.md README.md
 # End cabal-rpm setup
+%if %{with system_lua}
 cabal-tweak-flag system-lua True
-sed -i "/fail /d" hslua.cabal
-#cabal-tweak-drop-dep '\", fail       >= 4.9    && < 5\"'
 rm -r cbits/lua-5.3.5
+%endif
+sed -i "/fail /d" hslua.cabal
 
 
 %build
@@ -117,6 +123,9 @@ rm -r cbits/lua-5.3.5
 
 
 %changelog
+* Fri Jul 17 2020 Jens Petersen <petersen@redhat.com> - 1.0.3.2-2
+- used bundled lua-5.3.5 (can't build with lua-5.4)
+
 * Fri Feb 14 2020 Jens Petersen <petersen@redhat.com> - 1.0.3.2-1
 - update to 1.0.3.2