Here is another suggestion on how to change the frontend from the main
menu. The idea is that all cdebconf frontend udebs will include a
postinst script and a menu entry setting the frontend as the default
frontend. The udeb will also provide the virtual package
debconf-frontend.
When main-menu detects that a package implementing debconf-udeb, it
will exit, knowing that init will restart main-menu using
/sbin/debian-installer. We should change rootskel to only set
debconf/frontend the first time it is executed (instead of setting
DEBIAN_FRONTEND). This will make sure the new default frontend is
used when main-menu is started again after it exited because a new
debconf-frontend was selected.
Here is a patch for main-menu to get it to exit on command. We might
want to change 'debconf-frontend' to something more generic, like
'exit-main-menu'.
Index: main-menu.c
===================================================================
RCS file: /cvs/debian-boot/debian-installer/main-menu/main-menu.c,v
retrieving revision 1.60
diff -u -3 -p -u -r1.60 main-menu.c
--- main-menu.c 22 Jan 2003 11:23:29 -0000 1.60
+++ main-menu.c 10 Mar 2003 21:50:04 -0000
@@ -376,6 +376,15 @@ static void update_language (void) {
debconfclient_delete(debconf);
}
+static int
+is_package_providing(struct package_t p, const char *name)
+{
+ for (i = 0; p->provides[i] != NULL; i++)
+ if (strcmp(p->provides[i]->name, name) == 0) {
+ return 1; /* TRUE */
+ }
+}
+
int main (int argc, char **argv) {
struct package_t *p;
int i;
@@ -394,11 +403,17 @@ int main (int argc, char **argv) {
* package 'language-selected'.
* The LANGUAGE environment variable must be updated
*/
- for (i = 0; p->provides[i] != NULL; i++)
- if (strcmp(p->provides[i]->name, "language-selected") == 0) {
- update_language();
- break;
- }
+ if (is_package_providing(p, "language-selected")) {
+ update_language();
+
+ /*
+ * A new frontend package might change the default /
+ * current frontend. Exit main-menu to let it restart
+ * from init with the new frontend.
+ */
+ if (is_package_providing(p, "debconf-frontend")) {
+ return (0);
+
di_list_free(packages, di_pkg_free);
packages = status_read();
}
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