From ad7313db50a6bd29121d587effb3b308e21a20fd Mon Sep 17 00:00:00 2001
From: Stephen Gutekanst <stephen@hexops.com>
Date: Sat, 20 Apr 2024 09:23:44 -0700
Subject: [PATCH] use lazyDependency to optimize dependency fetching

Helps hexops/mach#1197

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
---
 build.zig     | 7 ++++---
 build.zig.zon | 1 +
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/build.zig b/build.zig
index 7bf31c193..5002b49b4 100644
--- a/build.zig
+++ b/build.zig
@@ -7,8 +7,6 @@ pub fn build(b: *std.Build) void {
     const use_system_zlib = b.option(bool, "use_system_zlib", "Use system zlib") orelse false;
     const enable_brotli = b.option(bool, "enable_brotli", "Build Brotli") orelse true;
 
-    const brotli_dep = b.dependency("brotli", .{ .target = target, .optimize = optimize });
-
     const lib = b.addStaticLibrary(.{
         .name = "freetype",
         .target = target,
@@ -24,7 +22,10 @@ pub fn build(b: *std.Build) void {
 
     if (enable_brotli) {
         lib.defineCMacro("FT_CONFIG_OPTION_USE_BROTLI", "1");
-        lib.linkLibrary(brotli_dep.artifact("brotli"));
+        if (b.lazyDependency("brotli", .{
+            .target = target,
+            .optimize = optimize,
+        })) |dep| lib.linkLibrary(dep.artifact("brotli"));
     }
 
     lib.defineCMacro("HAVE_UNISTD_H", "1");
diff --git a/build.zig.zon b/build.zig.zon
index 09ef4eb10..9b05a4e00 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -15,6 +15,7 @@
         .brotli = .{
             .url = "https://pkg.machengine.org/brotli/538f4c5b085bb53c84e39860305442abd0436be5.tar.gz",
             .hash = "12202a0f156a1d5d25a97468de318a99451a77b930f584d4edeff152259a875a4a75",
+            .lazy = true,
         },
     },
 }