From 0ae4e6e9b2940c4814e47ba83e3c05d212ee8fd9 Mon Sep 17 00:00:00 2001
From: Chris Wanstrath <chris@ozmm.org>
Date: Wed, 4 Mar 2026 19:09:46 -0800
Subject: [PATCH] Embed git SHA at build time via define flag

---
 scripts/build.ts   | 3 +++
 src/cli/version.ts | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/scripts/build.ts b/scripts/build.ts
index a9ec5a9..c9483da 100644
--- a/scripts/build.ts
+++ b/scripts/build.ts
@@ -9,6 +9,7 @@ import { join } from 'path'
 
 const DIST_DIR = join(import.meta.dir, '..', 'dist')
 const ENTRY_POINT = join(import.meta.dir, '..', 'src', 'cli', 'index.ts')
+const GIT_SHA = Bun.spawnSync(['git', 'rev-parse', '--short', 'HEAD']).stdout.toString().trim() || 'unknown'
 
 interface BuildTarget {
   arch: string
@@ -40,6 +41,7 @@ async function buildCurrent() {
     'bun',
     '--minify',
     '--sourcemap=external',
+    `--define=__GIT_SHA__="${GIT_SHA}"`,
     '--outfile',
     output,
   ], {
@@ -73,6 +75,7 @@ async function buildTarget(target: BuildTarget) {
     `bun-${target.os}-${target.arch}`,
     '--minify',
     '--sourcemap=external',
+    `--define=__GIT_SHA__="${GIT_SHA}"`,
     '--outfile',
     output,
   ], {
diff --git a/src/cli/version.ts b/src/cli/version.ts
index b2a17ae..0f3dac6 100644
--- a/src/cli/version.ts
+++ b/src/cli/version.ts
@@ -1,3 +1,3 @@
-const result = Bun.spawnSync(['git', 'rev-parse', '--short', 'HEAD'])
+declare var __GIT_SHA__: string
 
-export const SHA = result.stdout.toString().trim()
+export const SHA: string = typeof __GIT_SHA__ !== 'undefined' ? __GIT_SHA__ : 'dev'