From bcc911a7d70fc0595394e23736fedf67f39150c0 Mon Sep 17 00:00:00 2001
From: Daan De Meyer <daan.j.demeyer@gmail.com>
Date: Sat, 9 Sep 2023 12:20:26 +0200
Subject: [PATCH] mkosi: Conditionally use tools tree

If the systemd version on the host is too old and there's no local
build directory, use the default tools tree which will build an
image containing all the tooling required to build systemd and use
that to build the other presets.
---
 .github/workflows/mkosi.yml             | 3 ---
 mkosi.conf.d/10-extra-search-paths.conf | 7 +++++++
 mkosi.conf.d/10-systemd.conf            | 1 -
 mkosi.conf.d/10-tools.conf              | 8 ++++++++
 4 files changed, 15 insertions(+), 4 deletions(-)
 create mode 100644 mkosi.conf.d/10-extra-search-paths.conf
 create mode 100644 mkosi.conf.d/10-tools.conf

diff --git a/.github/workflows/mkosi.yml b/.github/workflows/mkosi.yml
index d46b7d1782..55bbad2bde 100644
--- a/.github/workflows/mkosi.yml
+++ b/.github/workflows/mkosi.yml
@@ -80,9 +80,6 @@ jobs:
 
     - name: Configure
       run: |
-        # We configure ExtraSearchPaths=build/ so make sure build/ exists.
-        mkdir build/
-
         tee mkosi.conf <<- EOF
         [Distribution]
         Distribution=${{ matrix.distro }}
diff --git a/mkosi.conf.d/10-extra-search-paths.conf b/mkosi.conf.d/10-extra-search-paths.conf
new file mode 100644
index 0000000000..bd3cdb1de4
--- /dev/null
+++ b/mkosi.conf.d/10-extra-search-paths.conf
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Match]
+PathExists=build/
+
+[Host]
+ExtraSearchPaths=build/
diff --git a/mkosi.conf.d/10-systemd.conf b/mkosi.conf.d/10-systemd.conf
index adb46e488d..b2921ffc67 100644
--- a/mkosi.conf.d/10-systemd.conf
+++ b/mkosi.conf.d/10-systemd.conf
@@ -17,7 +17,6 @@ Environment=ASAN_OPTIONS=verify_asan_link_order=false
 [Host]
 @Incremental=yes
 @QemuMem=2G
-ExtraSearchPaths=build/
 # Make sure we don't trigger systemd-firstboot prompting for the root password.
 Credentials=passwd.plaintext-password.root=
 KernelCommandLineExtra=systemd.crash_shell
diff --git a/mkosi.conf.d/10-tools.conf b/mkosi.conf.d/10-tools.conf
new file mode 100644
index 0000000000..21bdea5809
--- /dev/null
+++ b/mkosi.conf.d/10-tools.conf
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Match]
+PathExists=!build/
+SystemdVersion=<254
+
+[Host]
+ToolsTree=default