From 57fea2d8e33a61721fcf44f5aadb72178dc346cd Mon Sep 17 00:00:00 2001
From: Gabriel Ebner <gebner@gebner.org>
Date: Sat, 11 Mar 2023 00:59:55 +0000
Subject: [PATCH] feat: accept empty git hash as version

Fixes leanprover/lake#154
---
 Lake/Build/Monad.lean | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/Lake/Build/Monad.lean b/Lake/Build/Monad.lean
index 62bed905ed..0898eb05e9 100644
--- a/Lake/Build/Monad.lean
+++ b/Lake/Build/Monad.lean
@@ -13,11 +13,7 @@ namespace Lake
 
 def mkBuildContext (ws : Workspace) (oldMode : Bool) : IO BuildContext := do
   let lean := ws.lakeEnv.lean
-  let leanTrace :=
-    if lean.githash.isEmpty then
-      mixTrace (← computeTrace lean.lean) (← computeTrace lean.sharedLib)
-    else
-      Hash.ofString lean.githash
+  let leanTrace := Hash.ofString lean.githash
   return {opaqueWs := ws, leanTrace, oldMode}
 
 @[inline] def getLeanTrace : BuildM BuildTrace :=