create-usb: Add --allow-partial option

If you really want to export partial refs you can use this switch.

app/flatpak-builtins-create-usb.c

@@ -38,12 +38,14 @@ static char *opt_arch;
 static char *opt_destination_repo;
 static gboolean opt_runtime;
 static gboolean opt_app;
+static gboolean opt_allow_partial;
 
 static GOptionEntry options[] = {
   { "app", 0, 0, G_OPTION_ARG_NONE, &opt_app, N_("Look for app with the specified name"), NULL },
   { "arch", 0, 0, G_OPTION_ARG_STRING, &opt_arch, N_("Arch to copy"), N_("ARCH") },
   { "destination-repo", 0, 0, G_OPTION_ARG_FILENAME, &opt_destination_repo, "Use custom repository directory within the mount", N_("DEST") },
   { "runtime", 0, 0, G_OPTION_ARG_NONE, &opt_runtime, N_("Look for runtime with the specified name"), NULL },
+  { "allow-partial", 0, 0, G_OPTION_ARG_NONE, &opt_allow_partial, N_("Allow partial commits in the created repo"), NULL },
   { NULL }
 };
 
@@ -120,7 +122,7 @@ add_related (GHashTable   *all_refs,
   if (deploy_data == NULL)
     return FALSE;
 
-  if (flatpak_deploy_data_has_subpaths (deploy_data))
+  if (flatpak_deploy_data_has_subpaths (deploy_data) && !opt_allow_partial)
     return flatpak_fail (error, _("Related ref '%s' is only partially installed"), ref);
 
   commit = flatpak_deploy_data_get_commit (deploy_data);
@@ -639,7 +641,7 @@ flatpak_builtin_create_usb (int argc, char **argv, GCancellable *cancellable, GE
         if (deploy_data == NULL)
           return FALSE;
 
-        if (flatpak_deploy_data_has_subpaths (deploy_data))
+        if (flatpak_deploy_data_has_subpaths (deploy_data) && !opt_allow_partial)
           return flatpak_fail (error,
                                _("Ref '%s' is only partially installed"), installed_ref);
 

doc/flatpak-create-usb.xml

@@ -159,6 +159,15 @@
                 </para></listitem>
             </varlistentry>
 
+            <varlistentry>
+                <term><option>--allow-partial</option></term>
+
+                <listitem><para>
+                  Allow exporting partially installed commits, for example locale extensions without all languages. These can cause
+                  problems when installing them, for example if the language config is different on the installing side.
+                </para></listitem>
+            </varlistentry>
+
             <varlistentry>
                 <term><option>-v</option></term>
                 <term><option>--verbose</option></term>