always allow stdlibs to update

src/Operations.jl

@@ -338,14 +338,10 @@ function resolve_versions!(env::EnvCache, registries::Vector{Registry.RegistryIn
         names[pkg.uuid] = pkg.name
     end
 
-    mjv = env.manifest.julia_version
-    allow_stdlib_changes = julia_version == VERSION && !isnothing(mjv) && mjv.major == VERSION.major && mjv.minor == VERSION.minor
-    # if the manifest was previously resolved by the same major-minor julia version as the current version and the version that is being
-    # requested, don't require stdlib versions to remain the same. This allows manifests that were generated on nightly julia versions, or
-    # different patch releases where stdlibs may change version to be updated. Otherwise manifests will be invalid & break Pkg.precompile
-    # as they will have different stdlib versions listed to those which will be loaded
-
-    reqs = Resolve.Requires(pkg.uuid => (allow_stdlib_changes && is_stdlib(pkg.uuid)) ? VersionSpec("*") : VersionSpec(pkg.version) for pkg in pkgs)
+    # Unless using the unbounded or historical resolver, always allow stdlibs to update. Helps if the previous resolve
+    # happened on a different julia version / commit and the stdlib version in the manifest is not the current stdlib version
+    unbind_stdlibs = julia_version === VERSION
+    reqs = Resolve.Requires(pkg.uuid => is_stdlib(pkg.uuid) && unbind_stdlibs ? VersionSpec("*") : VersionSpec(pkg.version) for pkg in pkgs)
     graph, compat_map = deps_graph(env, registries, names, reqs, fixed, julia_version)
     Resolve.simplify_graph!(graph)
     vers = Resolve.resolve(graph)