From ecd4a969939855350930511516ae20584bda7fa7 Fri Jun 11 18:53:18 2021 +0200
From: Dario Faggioli <dfaggioli@suse.com>
Date: Fri, Jun 11 18:53:18 2021 +0200

dnf-backend: honor install_weak_deps=False if it is there

Currently, even if we have "install_weak_deps=False" in
/etc/dnf/dnf.conf, `pkcon install` still tries to install all
the recommended packages.

For avoiding that, we need to inform libdnf that we will
solve the goal of the transaction ourselves (by means of the
dnf_transaction_set_dont_solve_goal() API) and then explicitly
set the flag for ignoring the weak dependencies.

This fixes issue #486 and also solve
https://bugzilla.redhat.com/show_bug.cgi?id=1955484

diff -Nru PackageKit-1.2.2_patch/backends/dnf/pk-backend-dnf.c PackageKit-1.2.2_patch2/backends/dnf/pk-backend-dnf.c
--- PackageKit-1.2.2_patch/backends/dnf/pk-backend-dnf.c	2021-06-10 17:55:04.016246418 +0200
+++ PackageKit-1.2.2_patch2/backends/dnf/pk-backend-dnf.c	2021-06-12 23:39:35.829973392 +0200
@@ -932,6 +932,7 @@
 	gboolean ret;
 	DnfDb *db;
 	DnfState *state_local;
+	DnfGoalActions flags;
 	GPtrArray *installs = NULL;
 	GPtrArray *pkglist = NULL;
 	HyQuery query = NULL;
@@ -1028,7 +1029,10 @@
 		} else {
 			hy_goal_upgrade_all (job_data->goal);
 		}
-		ret = dnf_goal_depsolve (job_data->goal, DNF_ALLOW_UNINSTALL, &error);
+		flags = DNF_ALLOW_UNINSTALL;
+		if (!dnf_context_get_install_weak_deps())
+			flags |= DNF_IGNORE_WEAK_DEPS;
+		ret = dnf_goal_depsolve (job_data->goal, flags, &error);
 		if (!ret) {
 			pk_backend_job_error_code (job, error->code, "%s", error->message);
 			goto out;
@@ -2541,6 +2545,7 @@
 			    GError **error)
 {
 	DnfState *state_local;
+	DnfGoalActions dnf_flags = DNF_ALLOW_UNINSTALL;
 	PkBackendDnfJobData *job_data = pk_backend_job_get_user_data (job);
 	gboolean ret = TRUE;
 	/* allow downgrades for all transaction types */
@@ -2569,6 +2574,15 @@
 	dnf_transaction_set_flags (job_data->transaction, flags);
 
 	state_local = dnf_state_get_child (state);
+
+	/* we solve the goal ourselves, so we can deal with flags */
+	dnf_transaction_set_dont_solve_goal(job_data->transaction, TRUE);
+	if (!dnf_context_get_install_weak_deps ())
+		dnf_flags |= DNF_IGNORE_WEAK_DEPS;
+	ret = dnf_goal_depsolve (job_data->goal, dnf_flags, error);
+	if (!ret)
+		return FALSE;
+
 	ret = dnf_transaction_depsolve (job_data->transaction,
 					job_data->goal,
 					state_local,