From 068208091fb87db7f021171c836efa8a5612c41b Mon Sep 17 00:00:00 2001
From: Mac Malone <tydeu@hatpress.net>
Date: Sat, 12 Oct 2024 18:56:49 -0400
Subject: [PATCH] refactor: lake: restrict cache fetch to leanprover* (#5642)

Lake will now only automatically fetch Reservoir build caches for
package in the the `leanprover` and `leanprover-community`
organizations. We are not planning to expand the Reservoir build cache
to other packages until farther in the future.
---
 src/lake/Lake/Build/Package.lean | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/lake/Lake/Build/Package.lean b/src/lake/Lake/Build/Package.lean
index 39a1ff261e..40623b0d75 100644
--- a/src/lake/Lake/Build/Package.lean
+++ b/src/lake/Lake/Build/Package.lean
@@ -44,9 +44,9 @@ def Package.maybeFetchBuildCache (self : Package) : FetchM (BuildJob Bool) := do
   let shouldFetch :=
     (← getTryCache) &&
     (self.preferReleaseBuild || -- GitHub release
-      !(self.scope.isEmpty -- no Reservoir
-        || (← getElanToolchain).isEmpty
-        || (← self.buildDir.pathExists)))
+      ((self.scope == "leanprover" || self.scope == "leanprover-community")
+        && !(← getElanToolchain).isEmpty
+        && !(← self.buildDir.pathExists))) -- Reservoir
   if shouldFetch then
     self.optBuildCache.fetch
   else