1 files changed, 118 insertions, 0 deletions
diff --git a/pkgs/os-specific/linux/systemd/0007-hostnamed-localed-timedated-disable-methods-that-cha.patch b/pkgs/os-specific/linux/systemd/0007-hostnamed-localed-timedated-disable-methods-that-cha.patch
new file mode 100644
index 000000000000..5703c4f43fd4
--- /dev/null
+++ b/pkgs/os-specific/linux/systemd/0007-hostnamed-localed-timedated-disable-methods-that-cha.patch
@@ -0,0 +1,118 @@
+From 409fc808794942ad1736c2cc74853d9792e4ad02 Mon Sep 17 00:00:00 2001
+From: Gabriel Ebner <gebner@gebner.org>
+Date: Sun, 6 Dec 2015 14:26:36 +0100
+Subject: [PATCH 07/18] hostnamed, localed, timedated: disable methods that
+ change system settings.
+
+---
+ src/hostname/hostnamed.c |  9 +++++++++
+ src/locale/localed.c     |  9 +++++++++
+ src/timedate/timedated.c | 10 ++++++++++
+ 3 files changed, 28 insertions(+)
+
+diff --git a/src/hostname/hostnamed.c b/src/hostname/hostnamed.c
+index 21f6471495..8c5af7619f 100644
+--- a/src/hostname/hostnamed.c
++++ b/src/hostname/hostnamed.c
+@@ -422,6 +422,9 @@ static int method_set_hostname(sd_bus_message *m, void *userdata, sd_bus_error *
+         if (r < 0)
+                 return r;
+ 
++        return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
++            "Changing system settings via systemd is not supported on NixOS.");
++
+         if (isempty(name))
+                 name = c->data[PROP_STATIC_HOSTNAME];
+ 
+@@ -478,6 +481,9 @@ static int method_set_static_hostname(sd_bus_message *m, void *userdata, sd_bus_
+         if (r < 0)
+                 return r;
+ 
++        return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
++            "Changing system settings via systemd is not supported on NixOS.");
++
+         name = empty_to_null(name);
+ 
+         if (streq_ptr(name, c->data[PROP_STATIC_HOSTNAME]))
+@@ -535,6 +541,9 @@ static int set_machine_info(Context *c, sd_bus_message *m, int prop, sd_bus_mess
+         if (r < 0)
+                 return r;
+ 
++        return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
++            "Changing system settings via systemd is not supported on NixOS.");
++
+         name = empty_to_null(name);
+ 
+         if (streq_ptr(name, c->data[prop]))
+diff --git a/src/locale/localed.c b/src/locale/localed.c
+index 09f16d25f4..c1cb87cef1 100644
+--- a/src/locale/localed.c
++++ b/src/locale/localed.c
+@@ -275,6 +275,9 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
+         if (r < 0)
+                 return r;
+ 
++        return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
++            "Changing system settings via systemd is not supported on NixOS.");
++
+         /* If single locale without variable name is provided, then we assume it is LANG=. */
+         if (strv_length(l) == 1 && !strchr(*l, '=')) {
+                 if (!locale_is_valid(*l))
+@@ -410,6 +413,9 @@ static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_erro
+         if (r < 0)
+                 return r;
+ 
++        return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
++            "Changing system settings via systemd is not supported on NixOS.");
++
+         keymap = empty_to_null(keymap);
+         keymap_toggle = empty_to_null(keymap_toggle);
+ 
+@@ -586,6 +592,9 @@ static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_err
+         if (r < 0)
+                 return r;
+ 
++        return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
++            "Changing system settings via systemd is not supported on NixOS.");
++
+         layout = empty_to_null(layout);
+         model = empty_to_null(model);
+         variant = empty_to_null(variant);
+diff --git a/src/timedate/timedated.c b/src/timedate/timedated.c
+index 5e2fb50d83..63865f557c 100644
+--- a/src/timedate/timedated.c
++++ b/src/timedate/timedated.c
+@@ -652,6 +652,10 @@ static int method_set_timezone(sd_bus_message *m, void *userdata, sd_bus_error *
+         if (r < 0)
+                 return r;
+ 
++        if (getenv("NIXOS_STATIC_TIMEZONE"))
++                return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
++                    "Changing timezone via systemd is not supported when it is set in NixOS configuration.");
++
+         if (!timezone_is_valid(z, LOG_DEBUG))
+                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid or not installed time zone '%s'", z);
+ 
+@@ -731,6 +735,9 @@ static int method_set_local_rtc(sd_bus_message *m, void *userdata, sd_bus_error
+         if (r < 0)
+                 return r;
+ 
++        return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
++            "Changing system settings via systemd is not supported on NixOS.");
++
+         if (lrtc == c->local_rtc)
+                 return sd_bus_reply_method_return(m, NULL);
+ 
+@@ -923,6 +930,9 @@ static int method_set_ntp(sd_bus_message *m, void *userdata, sd_bus_error *error
+         if (r < 0)
+                 return r;
+ 
++        return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
++            "Changing system settings via systemd is not supported on NixOS.");
++
+         r = context_update_ntp_status(c, bus, m);
+         if (r < 0)
+                 return r;
+-- 
+2.26.2
+