From 80300ba7c8600afdf4df615193fa59824281a9c4 Mon Sep 17 00:00:00 2001
From: Colin Walters <walters@verbum.org>
Date: Thu, 13 Nov 2014 20:39:42 -0500
Subject: [PATCH] compose: Support 'install-langs'

This should exist for the same reason the yum and RPM options do; some
people want to construct more minimal systems.
---
 doc/treefile.md                      |  3 +++
 src/rpmostree-compose-builtin-tree.c | 20 ++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/doc/treefile.md b/doc/treefile.md
index cc341b20..14cda523 100644
--- a/doc/treefile.md
+++ b/doc/treefile.md
@@ -27,6 +27,9 @@ Treefile
    set; rpm-ostree will modify the `/etc/nsswitch.conf` in the target
    root to ensure that `/usr/lib/passwd` is used.
 
+ * `install-langs`: Array of strings, optional.  This sets the RPM
+   _install_langs macro.  Set this to e.g. `["en_US", "fr_FR"]`.
+
  * `packages`: Array of strings, mandatory: Set of installed packages.
    Names prefixed with an `@` (e.g. `@core`) are taken to be the names
    of comps groups.
diff --git a/src/rpmostree-compose-builtin-tree.c b/src/rpmostree-compose-builtin-tree.c
index 280925be..cd29acdb 100644
--- a/src/rpmostree-compose-builtin-tree.c
+++ b/src/rpmostree-compose-builtin-tree.c
@@ -315,6 +315,7 @@ yum_context_new (RpmOstreeTreeComposeContext  *self,
 {
   gboolean success = FALSE;
   YumContext *yumctx = NULL;
+  JsonNode *install_langs_n;
   GPtrArray *yum_argv = g_ptr_array_new_with_free_func (g_free);
   pid_t child;
   int clone_flags = SIGCHLD | CLONE_NEWNS | CLONE_NEWPID;
@@ -327,6 +328,25 @@ yum_context_new (RpmOstreeTreeComposeContext  *self,
                                    cancellable, error))
     goto out;
 
+  install_langs_n = json_object_get_member (treedata, "install-langs");
+  if (install_langs_n != NULL)
+    {
+      JsonArray *instlangs_a = json_node_get_array (install_langs_n);
+      guint len = json_array_get_length (instlangs_a);
+      guint i;
+      GString *opt = g_string_new ("--setopt=override_install_langs=");
+
+      for (i = 0; i < len; i++)
+        {
+          g_string_append (opt, json_array_get_string_element (instlangs_a, i));
+          if (i < len - 1)
+            g_string_append_c (opt, ',');
+        }
+
+      g_ptr_array_add (yum_argv, opt->str);
+      g_string_free (opt, FALSE);
+    }
+
   g_ptr_array_add (yum_argv, g_strconcat ("--installroot=",
                                           gs_file_get_path_cached (yumroot),
                                           NULL));