Merge pull request #14620 from NixOS/revert-shared-tarball-cache

libfetchers: Don't have a single shared tarball cache

Author: Ericson2314

src/libfetchers/git-utils.cc

@@ -1334,10 +1334,8 @@ namespace fetchers {
 
 ref<GitRepo> Settings::getTarballCache() const
 {
-    auto tarballCache(_tarballCache.lock());
-    if (!*tarballCache)
-        *tarballCache = GitRepo::openRepo(std::filesystem::path(getCacheDir()) / "tarball-cache", true, true);
-    return ref<GitRepo>(*tarballCache);
+    static auto repoDir = std::filesystem::path(getCacheDir()) / "tarball-cache";
+    return GitRepo::openRepo(repoDir, true, true);
 }
 
 } // namespace fetchers

src/libfetchers/include/nix/fetchers/fetch-settings.hh

@@ -135,8 +135,6 @@ struct Settings : public Config
 
 private:
     mutable Sync<std::shared_ptr<Cache>> _cache;
-
-    mutable Sync<std::shared_ptr<GitRepo>> _tarballCache;
 };
 
 } // namespace nix::fetchers