From 4f4beb0fe477c4f8ebf6235a2ed8a3171895e8e6 Mon Sep 17 00:00:00 2001
From: Meta Vens <rwvens@hotmail.com>
Date: Mon, 14 Sep 2026 17:38:20 +0200
Subject: [PATCH] Pin CultLib for headless builds

Directory.Build.props names CultLibRoot (CULTLIB_ROOT, else the sibling
checkout) and pins CultLibRevision to f0605367 (CultMath 0.2.1 on main).
Directory.Build.targets carries Delvehold's VerifyCultLibRevision guard,
checking for CultMath.csproj: HEAD must equal the pin and the worktree must
be clean.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
---
 Directory.Build.props   |  9 +++++++++
 Directory.Build.targets | 22 ++++++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 Directory.Build.props
 create mode 100644 Directory.Build.targets

diff --git a/Directory.Build.props b/Directory.Build.props
new file mode 100644
index 000000000..d8d359c6b
--- /dev/null
+++ b/Directory.Build.props
@@ -0,0 +1,9 @@
+<Project>
+  <PropertyGroup>
+    <CultLibRoot Condition="'$(CultLibRoot)' == '' and '$(CULTLIB_ROOT)' != ''">$(CULTLIB_ROOT)</CultLibRoot>
+    <CultLibRoot Condition="'$(CultLibRoot)' == ''">$(MSBuildThisFileDirectory)..\CultLib</CultLibRoot>
+    <CultLibRevision>f0605367e0d7e57941a57bacb0b8cb8d893073be</CultLibRevision>
+    <GitExecutable Condition="'$(GitExecutable)' == '' and Exists('C:\Program Files\Git\cmd\git.exe')">C:\Program Files\Git\cmd\git.exe</GitExecutable>
+    <GitExecutable Condition="'$(GitExecutable)' == ''">git</GitExecutable>
+  </PropertyGroup>
+</Project>
diff --git a/Directory.Build.targets b/Directory.Build.targets
new file mode 100644
index 000000000..aaccbd63d
--- /dev/null
+++ b/Directory.Build.targets
@@ -0,0 +1,22 @@
+<Project>
+  <Target Name="VerifyCultLibRevision"
+          BeforeTargets="ResolveProjectReferences"
+          Condition="'$(SkipCultLibRevisionCheck)' != 'true'">
+    <Error Condition="!Exists('$(CultLibRoot)\packages\cultmath\src\CultMath\CultMath.csproj')"
+           Text="CultLibRoot '$(CultLibRoot)' does not contain the required CultMath project." />
+    <Exec Command="&quot;$(GitExecutable)&quot; -C &quot;$(CultLibRoot)&quot; rev-parse HEAD"
+          ConsoleToMSBuild="true"
+          StandardOutputImportance="Low">
+      <Output TaskParameter="ConsoleOutput" PropertyName="ActualCultLibRevision" />
+    </Exec>
+    <Error Condition="'$([System.String]::Copy($(ActualCultLibRevision)).Trim())' != '$(CultLibRevision)'"
+           Text="CultLib must be revision $(CultLibRevision); found $([System.String]::Copy($(ActualCultLibRevision)).Trim()). Set CultLibRoot to the admitted clean worktree." />
+    <Exec Command="&quot;$(GitExecutable)&quot; -C &quot;$(CultLibRoot)&quot; status --porcelain --untracked-files=normal"
+          ConsoleToMSBuild="true"
+          StandardOutputImportance="Low">
+      <Output TaskParameter="ConsoleOutput" PropertyName="CultLibStatus" />
+    </Exec>
+    <Error Condition="'$([System.String]::Copy($(CultLibStatus)).Trim())' != ''"
+           Text="CultLibRoot must be clean before Aetheria consumes it." />
+  </Target>
+</Project>