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

From 0000000000000000000000000000000000000000 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] Add some NixOS-specific unit directories

Look in `/nix/var/nix/profiles/default/lib/systemd/{system,user}` for
units provided by packages installed into the default profile via
`nix-env -iA nixos.$package`.

Also, remove /usr and /lib as these don't exist on NixOS.
---
 src/basic/path-lookup.c | 17 ++---------------
 src/core/systemd.pc.in  |  8 ++++----
 2 files changed, 6 insertions(+), 19 deletions(-)

diff --git a/src/basic/path-lookup.c b/src/basic/path-lookup.c
index 36f386254b..a968d28dfc 100644
--- a/src/basic/path-lookup.c
+++ b/src/basic/path-lookup.c
@@ -92,11 +92,7 @@ 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_DIR,
-        "/usr/lib/systemd/user",
-        "/usr/share/systemd/user",
         NULL
 };
 
@@ -617,15 +613,13 @@ int lookup_paths_init(
                                         persistent_config,
                                         SYSTEM_CONFIG_UNIT_DIR,
                                         "/etc/systemd/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_DIR,
-                                        "/usr/lib/systemd/system",
-                                        STRV_IFNOTNULL(flags & LOOKUP_PATHS_SPLIT_USR ? "/lib/systemd/system" : NULL),
                                         STRV_IFNOTNULL(generator_late));
                         break;
 
@@ -641,14 +635,11 @@ int lookup_paths_init(
                                         persistent_config,
                                         USER_CONFIG_UNIT_DIR,
                                         "/etc/systemd/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_DIR,
-                                        "/usr/lib/systemd/user",
                                         STRV_IFNOTNULL(generator_late));
                         break;
 
@@ -808,7 +799,6 @@ char **generator_binary_paths(LookupScope scope) {
                 case LOOKUP_SCOPE_SYSTEM:
                         add = strv_new("/run/systemd/system-generators",
                                        "/etc/systemd/system-generators",
-                                       "/usr/local/lib/systemd/system-generators",
                                        SYSTEM_GENERATOR_DIR);
                         break;
 
@@ -816,7 +806,6 @@ char **generator_binary_paths(LookupScope scope) {
                 case LOOKUP_SCOPE_USER:
                         add = strv_new("/run/systemd/user-generators",
                                        "/etc/systemd/user-generators",
-                                       "/usr/local/lib/systemd/user-generators",
                                        USER_GENERATOR_DIR);
                         break;
 
@@ -855,12 +844,10 @@ char **env_generator_binary_paths(bool is_system) {
                 if (is_system)
                         add = strv_new("/run/systemd/system-environment-generators",
                                         "/etc/systemd/system-environment-generators",
-                                        "/usr/local/lib/systemd/system-environment-generators",
                                         SYSTEM_ENV_GENERATOR_DIR);
                 else
                         add = strv_new("/run/systemd/user-environment-generators",
                                        "/etc/systemd/user-environment-generators",
-                                       "/usr/local/lib/systemd/user-environment-generators",
                                        USER_ENV_GENERATOR_DIR);
 
                 if (!add)
diff --git a/src/core/systemd.pc.in b/src/core/systemd.pc.in
index 693433b34b..5932a21b5b 100644
--- a/src/core/systemd.pc.in
+++ b/src/core/systemd.pc.in
@@ -38,10 +38,10 @@ systemdsystemconfdir=${systemd_system_conf_dir}
 systemd_user_conf_dir=${sysconfdir}/systemd/user
 systemduserconfdir=${systemd_user_conf_dir}
 
-systemd_system_unit_path=${systemd_system_conf_dir}:/etc/systemd/system:/run/systemd/system:/usr/local/lib/systemd/system:${systemd_system_unit_dir}:/usr/lib/systemd/system:/lib/systemd/system
+systemd_system_unit_path=${systemd_system_conf_dir}:/etc/systemd/system:/nix/var/nix/profiles/default/lib/systemd/system:/run/systemd/system:${systemdsystemunitdir}
 systemdsystemunitpath=${systemd_system_unit_path}
 
-systemd_user_unit_path=${systemd_user_conf_dir}:/etc/systemd/user:/run/systemd/user:/usr/local/lib/systemd/user:/usr/local/share/systemd/user:${systemd_user_unit_dir}:/usr/lib/systemd/user:/usr/share/systemd/user
+systemd_user_unit_path=${systemd_user_conf_dir}:/etc/systemd/user:/nix/var/nix/profiles/default/lib/systemd/user:/run/systemd/user:${systemduserunitdir}
 systemduserunitpath=${systemd_user_unit_path}
 
 systemd_system_generator_dir=${root_prefix}/lib/systemd/system-generators
@@ -50,10 +50,10 @@ systemdsystemgeneratordir=${systemd_system_generator_dir}
 systemd_user_generator_dir=${prefix}/lib/systemd/user-generators
 systemdusergeneratordir=${systemd_user_generator_dir}
 
-systemd_system_generator_path=/run/systemd/system-generators:/etc/systemd/system-generators:/usr/local/lib/systemd/system-generators:${systemd_system_generator_dir}
+systemd_system_generator_path=/run/systemd/system-generators:/etc/systemd/system-generators:${systemd_system_generator_dir}
 systemdsystemgeneratorpath=${systemd_system_generator_path}
 
-systemd_user_generator_path=/run/systemd/user-generators:/etc/systemd/user-generators:/usr/local/lib/systemd/user-generators:${systemd_user_generator_dir}
+systemd_user_generator_path=/run/systemd/user-generators:/etc/systemd/user-generators:${systemd_user_generator_dir}
 systemdusergeneratorpath=${systemd_user_generator_path}
 
 systemd_sleep_dir=${root_prefix}/lib/systemd/system-sleep