Install sane driver via /etc/sane.d/dll.d/hpaio instead of post-script hacks

hplip.spec

@@ -20,7 +20,7 @@
 Summary:	HP printer/all-in-one driver infrastructure
 Name:		hplip
 Version:	3.16.11
-Release:	2
+Release:	3
 License:	GPLv2+ and MIT
 Group:		System/Printing
 Url:		http://hplip.sourceforge.net/
@@ -98,7 +98,6 @@ BuildRequires:	python3-cups
 %if %{sane_backend}
 BuildRequires:	pkgconfig(sane-backends)
 BuildRequires:	xsane
-Requires(post):	hplip
 %endif
 Requires(post):	systemd
 Requires:	cups
@@ -205,7 +204,6 @@ the "%{libhpip}" library.
 %package -n %{libsane}
 Summary:	SANE driver for scanners in HP's multi-function devices (from HPLIP)
 Group:		System/Printing
-Requires(post):	sane-backends
 Provides:	sane-backends-hpaio = %{version}-%{release}
 # (cjw) for system-config-printer
 Provides:	libsane-hpaio = %{version}-%{release}
@@ -544,6 +542,8 @@ mv %{buildroot}%{_docdir}/%{name}-%{version}%{extraversion} %{buildroot}%{_docdi
 # Remove static libraries of SANE driver
 rm -f %{buildroot}%{_libdir}/sane/libsane-hpaio*.la
 rm -f %{buildroot}%{_sysconfdir}/sane.d/dll.conf
+mkdir -p %{buildroot}%{_sysconfdir}/sane.d/dll.d
+echo 'hpaio' > %{buildroot}%{_sysconfdir}/sane.d/dll.d/hpaio
 
 # Remove other unneeded/unwanted files
 # Remove files we don't want to package.
@@ -681,27 +681,6 @@ done
 /sbin/udevadm settle --timeout=15
 :
 
-%if %{sane_backend}
-%post -n %{libsane}
-
-# Add HPLIP driver to /etc/sane.d/dll.conf
-if ! grep ^hpaio /etc/sane.d/dll.conf >/dev/null 2>/dev/null ; then \
-	echo hpaio >> /etc/sane.d/dll.conf; \
-fi
-%endif
-
-%if %{sane_backend}
-%preun -n %{libsane}
-# Remove HPLIP driver from /etc/sane.d/dll.conf
-if [ "$1" = 0 ]; then \
-	if grep ^hpaio /etc/sane.d/dll.conf >/dev/null 2>/dev/null ; then \
-		sed '/hpaio/d' /etc/sane.d/dll.conf > /tmp/$$; \
-		cp -f /tmp/$$ /etc/sane.d/dll.conf; \
-		rm -f /tmp/$$; \
-	fi; \
-fi
-%endif
-
 # Restart CUPS to make the removal of the Fax PPD known to it
 %_post_service cups
 
@@ -853,9 +832,13 @@ fi
 %{_libdir}/libhpdiscovery.so
 %if %{sane_backend}
 %{_libdir}/sane/libsane-hpaio.so
+%endif
 
+%if %{sane_backend}
 %files -n %{libsane}
 %{_libdir}/sane/libsane-hpaio.so.%{sanemaj}*
+# Not really a shared library package so it's OK to have config here
+%config(noreplace) %{_sysconfdir}/sane.d/dll.d/hpaio
 %endif
 
 %files compat-libs