From 5039d8aceb4802cb40548b69fcb600bb5ac59985 Mon Sep 17 00:00:00 2001
From: Kristoffer Carlsson <kcarlsson89@gmail.com>
Date: Wed, 3 May 2023 09:21:58 +0200
Subject: [PATCH] shield `Base.require` from invalidations when loading
 Symbolics.jl (#49604)

---
 base/loading.jl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/base/loading.jl b/base/loading.jl
index 5f4f3a73af749..cf23fdb887f67 100644
--- a/base/loading.jl
+++ b/base/loading.jl
@@ -747,10 +747,10 @@ function explicit_project_deps_get(project_file::String, name::String)::Union{No
     return nothing
 end
 
-function is_v1_format_manifest(raw_manifest::Dict)
+function is_v1_format_manifest(raw_manifest::Dict{String})
     if haskey(raw_manifest, "manifest_format")
         mf = raw_manifest["manifest_format"]
-        if mf isa Dict && haskey(mf, "uuid")
+        if mf isa Dict{String} && haskey(mf, "uuid")
             # the off-chance where an old format manifest has a dep called "manifest_format"
             return true
         end