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

From b46f1b20e990f01af4bdf3dd6fef45f5b4a5993e 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/basic/path-lookup.c | 20 +++++---------------
 src/core/systemd.pc.in  |  5 +++--
 2 files changed, 8 insertions(+), 17 deletions(-)

diff --git a/src/basic/path-lookup.c b/src/basic/path-lookup.c
index 52968dee34..bba2eb09b8 100644
--- a/src/basic/path-lookup.c
+++ b/src/basic/path-lookup.c
@@ -94,17 +94,14 @@ 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_DIR,
-        "/usr/lib/systemd/user",
-        "/usr/share/systemd/user",
         NULL
 };
 
 static const char* const user_config_unit_paths[] = {
         USER_CONFIG_UNIT_DIR,
         "/etc/systemd/user",
+        "/etc/systemd-mutable/user",
         NULL
 };
 
@@ -616,15 +613,14 @@ int lookup_paths_init(
                                         persistent_config,
                                         SYSTEM_CONFIG_UNIT_DIR,
                                         "/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;
 
@@ -640,14 +636,12 @@ int lookup_paths_init(
                                         persistent_config,
                                         USER_CONFIG_UNIT_DIR,
                                         "/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_DIR,
-                                        "/usr/lib/systemd/user",
                                         STRV_IFNOTNULL(generator_late));
                         break;
 
@@ -797,7 +791,6 @@ char **generator_binary_paths(UnitFileScope scope) {
                 case UNIT_FILE_SYSTEM:
                         add = strv_new("/run/systemd/system-generators",
                                        "/etc/systemd/system-generators",
-                                       "/usr/local/lib/systemd/system-generators",
                                        SYSTEM_GENERATOR_DIR);
                         break;
 
@@ -805,7 +798,6 @@ char **generator_binary_paths(UnitFileScope scope) {
                 case UNIT_FILE_USER:
                         add = strv_new("/run/systemd/user-generators",
                                        "/etc/systemd/user-generators",
-                                       "/usr/local/lib/systemd/user-generators",
                                        USER_GENERATOR_DIR);
                         break;
 
@@ -844,12 +836,10 @@ 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 8424837824..b1c541bc52 100644
--- a/src/core/systemd.pc.in
+++ b/src/core/systemd.pc.in
@@ -38,10 +38,11 @@ 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=${systemd_system_conf_dir}:/etc/systemd/system:/etc/systemd-mutable/system:/nix/var/nix/profiles/default/lib/systemd/system:/run/systemd/system:${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=${systemd_user_conf_dir}:/etc/systemd/user:/etc/systemd-mutable/user:/nix/var/nix/profiles/default/lib/systemd/user:/run/systemd/user:${systemduserunitdir}
+
 systemduserunitpath=${systemd_user_unit_path}
 
 systemd_system_generator_dir=${root_prefix}/lib/systemd/system-generators
-- 
2.28.0