depot/third_party/nixpkgs/pkgs/os-specific/linux/systemd/0005-Add-some-NixOS-specific-unit-directories.patch

From 45f80155b7c2edb1e73c233283f1ab1582e1cfbe Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Fri, 19 Dec 2014 14:46:17 +0100
Subject: [PATCH 05/18] Add some NixOS-specific unit directories

Look in `/nix/var/nix/profiles/default/lib/systemd` for units provided
by packages installed into the default profile via
`nix-env -iA nixos.$package`, and into `/etc/systemd-mutable/system` for
persistent, mutable units (used for Dysnomia).

Also, remove /usr and /lib as these don't exist on NixOS.
---
 src/core/systemd.pc.in   |  4 ++--
 src/shared/path-lookup.c | 18 +++++-------------
 2 files changed, 7 insertions(+), 15 deletions(-)

diff --git a/src/core/systemd.pc.in b/src/core/systemd.pc.in
index 8331832c7a..bedb97115d 100644
--- a/src/core/systemd.pc.in
+++ b/src/core/systemd.pc.in
@@ -17,8 +17,8 @@ systemduserunitdir=${prefix}/lib/systemd/user
 systemduserpresetdir=${prefix}/lib/systemd/user-preset
 systemdsystemconfdir=${sysconfdir}/systemd/system
 systemduserconfdir=${sysconfdir}/systemd/user
-systemdsystemunitpath=${systemdsystemconfdir}:/etc/systemd/system:/run/systemd/system:/usr/local/lib/systemd/system:${systemdsystemunitdir}:/usr/lib/systemd/system:/lib/systemd/system
-systemduserunitpath=${systemduserconfdir}:/etc/systemd/user:/run/systemd/user:/usr/local/lib/systemd/user:/usr/local/share/systemd/user:${systemduserunitdir}:/usr/lib/systemd/user:/usr/share/systemd/user
+systemdsystemunitpath=${systemdsystemconfdir}:/etc/systemd/system:/etc/systemd-mutable/system:/nix/var/nix/profiles/default/lib/systemd/system:/run/systemd/system:${systemdsystemunitdir}
+systemduserunitpath=${systemduserconfdir}:/etc/systemd/user:/etc/systemd-mutable/user:/nix/var/nix/profiles/default/lib/systemd/user:/run/systemd/user:${systemduserunitdir}
 systemdsystemgeneratordir=${rootprefix}/lib/systemd/system-generators
 systemdusergeneratordir=${prefix}/lib/systemd/user-generators
 systemdsystemgeneratorpath=/run/systemd/system-generators:/etc/systemd/system-generators:/usr/local/lib/systemd/system-generators:${systemdsystemgeneratordir}
diff --git a/src/shared/path-lookup.c b/src/shared/path-lookup.c
index 48e0eec09a..a9d38f16d0 100644
--- a/src/shared/path-lookup.c
+++ b/src/shared/path-lookup.c
@@ -98,17 +98,14 @@ int xdg_user_data_dir(char **ret, const char *suffix) {
 }
 
 static const char* const user_data_unit_paths[] = {
-        "/usr/local/lib/systemd/user",
-        "/usr/local/share/systemd/user",
         USER_DATA_UNIT_PATH,
-        "/usr/lib/systemd/user",
-        "/usr/share/systemd/user",
         NULL
 };
 
 static const char* const user_config_unit_paths[] = {
         USER_CONFIG_UNIT_PATH,
         "/etc/systemd/user",
+        "/etc/systemd-mutable/user",
         NULL
 };
 
@@ -604,15 +601,14 @@ int lookup_paths_init(
                                         persistent_config,
                                         SYSTEM_CONFIG_UNIT_PATH,
                                         "/etc/systemd/system",
+                                        "/etc/systemd-mutable/system",
+                                        "/nix/var/nix/profiles/default/lib/systemd/system",
                                         STRV_IFNOTNULL(persistent_attached),
                                         runtime_config,
                                         "/run/systemd/system",
                                         STRV_IFNOTNULL(runtime_attached),
                                         STRV_IFNOTNULL(generator),
-                                        "/usr/local/lib/systemd/system",
                                         SYSTEM_DATA_UNIT_PATH,
-                                        "/usr/lib/systemd/system",
-                                        STRV_IFNOTNULL(flags & LOOKUP_PATHS_SPLIT_USR ? "/lib/systemd/system" : NULL),
                                         STRV_IFNOTNULL(generator_late));
                         break;
 
@@ -628,14 +624,12 @@ int lookup_paths_init(
                                         persistent_config,
                                         USER_CONFIG_UNIT_PATH,
                                         "/etc/systemd/user",
+                                        "/etc/systemd-mutable/user",
+                                        "/nix/var/nix/profiles/default/lib/systemd/user",
                                         runtime_config,
                                         "/run/systemd/user",
                                         STRV_IFNOTNULL(generator),
-                                        "/usr/local/share/systemd/user",
-                                        "/usr/share/systemd/user",
-                                        "/usr/local/lib/systemd/user",
                                         USER_DATA_UNIT_PATH,
-                                        "/usr/lib/systemd/user",
                                         STRV_IFNOTNULL(generator_late));
                         break;
 
@@ -824,14 +818,12 @@ char **generator_binary_paths(UnitFileScope scope) {
         case UNIT_FILE_SYSTEM:
                 return strv_new("/run/systemd/system-generators",
                                 "/etc/systemd/system-generators",
-                                "/usr/local/lib/systemd/system-generators",
                                 SYSTEM_GENERATOR_PATH);
 
         case UNIT_FILE_GLOBAL:
         case UNIT_FILE_USER:
                 return strv_new("/run/systemd/user-generators",
                                 "/etc/systemd/user-generators",
-                                "/usr/local/lib/systemd/user-generators",
                                 USER_GENERATOR_PATH);
 
         default:
-- 
2.26.2