Blame SOURCES/0003-do-not-fail-on-empty-transactions.patch

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From 5b9caacf40e20e74298da29b0e5de525096c0e13 Mon Sep 17 00:00:00 2001
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From: Igor Gnatenko <ignatenko@redhat.com>
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Date: Sat, 4 Mar 2017 16:56:43 +0100
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Subject: [PATCH 3/3] do not fail on empty transactions
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Closes: https://github.com/rpm-software-management/microdnf/issues/3
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Signed-off-by: Igor Gnatenko <ignatenko@redhat.com>
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---
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 dnf/dnf-utils.c                           | 16 +++++++++-------
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 dnf/dnf-utils.h                           |  4 ++--
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 dnf/plugins/install/dnf-command-install.c |  5 +++--
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 dnf/plugins/update/dnf-command-update.c   |  5 +++--
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 4 files changed, 17 insertions(+), 13 deletions(-)
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diff --git a/dnf/dnf-utils.c b/dnf/dnf-utils.c
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index 16f4d08..b3d087c 100644
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--- a/dnf/dnf-utils.c
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+++ b/dnf/dnf-utils.c
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@@ -2,7 +2,7 @@
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  *
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  * Copyright © 2010-2015 Richard Hughes <richard@hughsie.com>
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  * Copyright © 2016 Colin Walters <walters@verbum.org>
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- * Copyright © 2016 Igor Gnatenko <ignatenko@redhat.com>
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+ * Copyright © 2016-2017 Igor Gnatenko <ignatenko@redhat.com>
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  *
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  * This program is free software: you can redistribute it and/or modify
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  * it under the terms of the GNU General Public License as published by
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@@ -20,7 +20,7 @@
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 #include "dnf-utils.h"
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-void
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+gboolean
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 dnf_utils_print_transaction (DnfContext *ctx)
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 {
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   g_autoptr(GPtrArray) pkgs = dnf_goal_get_packages (dnf_context_get_goal (ctx),
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@@ -30,16 +30,18 @@ dnf_utils_print_transaction (DnfContext *ctx)
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                                                      DNF_PACKAGE_INFO_UPDATE,
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                                                      DNF_PACKAGE_INFO_REMOVE,
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                                                      -1);
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-  g_print ("Transaction: ");
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+
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   if (pkgs->len == 0)
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-    g_print ("(empty)");
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-  else
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-    g_print ("%u packages", pkgs->len);
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-  g_print ("\n");
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+    {
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+      g_print ("Nothing to do.\n");
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+      return FALSE;
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+    }
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+  g_print ("Transaction: %u packages\n", pkgs->len);
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   for (guint i = 0; i < pkgs->len; i++)
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     {
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       DnfPackage *pkg = pkgs->pdata[i];
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       g_print ("%s (%s)\n", dnf_package_get_nevra (pkg), dnf_package_get_reponame (pkg));
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     }
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+  return TRUE;
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 }
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diff --git a/dnf/dnf-utils.h b/dnf/dnf-utils.h
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index d649109..f894800 100644
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--- a/dnf/dnf-utils.h
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+++ b/dnf/dnf-utils.h
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@@ -1,7 +1,7 @@
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 /* dnf-utils.h
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  *
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  * Copyright © 2016 Colin Walters <walters@verbum.org>
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- * Copyright © 2016 Igor Gnatenko <ignatenko@redhat.com>
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+ * Copyright © 2016-2017 Igor Gnatenko <ignatenko@redhat.com>
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  *
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  * This program is free software: you can redistribute it and/or modify
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  * it under the terms of the GNU General Public License as published by
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@@ -24,6 +24,6 @@
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 G_BEGIN_DECLS
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-void dnf_utils_print_transaction (DnfContext *ctx);
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+gboolean dnf_utils_print_transaction (DnfContext *ctx);
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 G_END_DECLS
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diff --git a/dnf/plugins/install/dnf-command-install.c b/dnf/plugins/install/dnf-command-install.c
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index 6f27768..ea549da 100644
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--- a/dnf/plugins/install/dnf-command-install.c
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+++ b/dnf/plugins/install/dnf-command-install.c
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@@ -2,7 +2,7 @@
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  *
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  * Copyright © 2010-2015 Richard Hughes <richard@hughsie.com>
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  * Copyright © 2016 Colin Walters <walters@verbum.org>
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- * Copyright © 2016 Igor Gnatenko <ignatenko@redhat.com>
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+ * Copyright © 2016-2017 Igor Gnatenko <ignatenko@redhat.com>
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  *
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  * This program is free software: you can redistribute it and/or modify
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  * it under the terms of the GNU General Public License as published by
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@@ -75,7 +75,8 @@ dnf_command_install_run (DnfCommand      *cmd,
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     }
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   if (!dnf_goal_depsolve (dnf_context_get_goal (ctx), DNF_INSTALL, error))
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     return FALSE;
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-  dnf_utils_print_transaction (ctx);
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+  if (!dnf_utils_print_transaction (ctx))
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+    return TRUE;
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   if (!dnf_context_run (ctx, NULL, error))
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     return FALSE;
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   g_print ("Complete.\n");
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diff --git a/dnf/plugins/update/dnf-command-update.c b/dnf/plugins/update/dnf-command-update.c
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index 33f7974..652d902 100644
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--- a/dnf/plugins/update/dnf-command-update.c
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+++ b/dnf/plugins/update/dnf-command-update.c
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@@ -1,6 +1,6 @@
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 /* dnf-command-update.c
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  *
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- * Copyright © 2016 Igor Gnatenko <ignatenko@redhat.com>
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+ * Copyright © 2016-2017 Igor Gnatenko <ignatenko@redhat.com>
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  *
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  * This program is free software: you can redistribute it and/or modify
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  * it under the terms of the GNU General Public License as published by
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@@ -73,7 +73,8 @@ dnf_command_update_run (DnfCommand      *cmd,
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   if (!dnf_goal_depsolve (dnf_context_get_goal (ctx), 0, error))
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     return FALSE;
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-  dnf_utils_print_transaction (ctx);
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+  if (!dnf_utils_print_transaction (ctx))
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+    return TRUE;
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   if (!dnf_context_run (ctx, NULL, error))
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     return FALSE;
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   g_print ("Complete.\n");
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-- 
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2.7.4
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