From b5cd2e7a33871d2042fc4ab3078ac34c2a535ad5 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Mon, 15 Jan 2024 14:29:55 -0800
Subject: [PATCH] build: set os_version_min on default target so tests work

---
 build.zig | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/build.zig b/build.zig
index 222b8ed37..f142ebabf 100644
--- a/build.zig
+++ b/build.zig
@@ -37,7 +37,17 @@ const app_version = std.SemanticVersion{ .major = 0, .minor = 1, .patch = 0 };
 
 pub fn build(b: *std.Build) !void {
     const optimize = b.standardOptimizeOption(.{});
-    const target = b.standardTargetOptions(.{});
+    const target = target: {
+        var result = b.standardTargetOptions(.{});
+
+        // If we have no minimum OS version, we set the default based on
+        // our tag. Not all tags have a minimum so this may be null.
+        if (result.query.os_version_min == null) {
+            result.query.os_version_min = osVersionMin(result.result.os.tag);
+        }
+
+        break :target result;
+    };
 
     const wasm_target: WasmTarget = .browser;
 
@@ -655,7 +665,7 @@ fn osVersionMin(tag: std.Target.Os.Tag) ?std.Target.Query.OsVersion {
 
         // This should never happen currently. If we add a new target then
         // we should add a new case here.
-        else => @panic("unhandled os version min os tag"),
+        else => null,
     };
 }