nixpkgs/pkgs/os-specific/linux/systemd/0015-pkg-config-derive-prefix-from-prefix.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Sun, 6 Dec 2020 08:34:19 +0100
Subject: [PATCH] pkg-config: derive prefix from --prefix

Point prefix to the one configured, instead of `/usr` `systemd` has limited
support for making the pkgconfig prefix overridable, and interpolates those
values later down.

So we only need to patch this one value to get the correct paths.
See systemd/systemd@bc4e6e27922a2873985ab9367d79fb099f70b505 for details.

Co-Authored-By: Florian Klink <flokli@flokli.de>
---
 src/core/systemd.pc.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/systemd.pc.in b/src/core/systemd.pc.in
index 5932a21b5b..20bf8e316d 100644
--- a/src/core/systemd.pc.in
+++ b/src/core/systemd.pc.in
@@ -11,7 +11,7 @@
 # considered deprecated (though there is no plan to remove them). New names
 # shall have underscores.
 
-prefix=/usr
+prefix={{PREFIX}}
 root_prefix={{ROOTPREFIX_NOSLASH}}
 rootprefix=${root_prefix}
 sysconf_dir={{SYSCONF_DIR}}