refactor(3p/nix): Remove remaining prefork-compat type r/1401

Removes the verbosity enum, which is no longer actively used anywhere
other than a daemon protocol implementation bit that doesn't actually
work.

Since the verbosity was marked deprecated, this removes one of the
last remaining warnings.

Change-Id: Iaee9d1d6c14b30daac83bb44bcacff32a0e07fb0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1289
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>

3 files changed, 5 insertions, 31 deletions

diff --git a/third_party/nix/src/libstore/remote-store.cc b/third_party/nix/src/libstore/remote-store.cc
index 7570255330c6..7c4f3a138fc0 100644
--- a/third_party/nix/src/libstore/remote-store.cc
+++ b/third_party/nix/src/libstore/remote-store.cc
@@ -19,7 +19,6 @@
 #include "libutil/archive.hh"
 #include "libutil/finally.hh"
 #include "libutil/pool.hh"
-#include "libutil/prefork-compat.hh"
 #include "libutil/serialise.hh"
 #include "libutil/util.hh"
 
@@ -167,14 +166,11 @@ void RemoteStore::initConnection(Connection& conn) {
 void RemoteStore::setOptions(Connection& conn) {
   conn.to << wopSetOptions << static_cast<uint64_t>(settings.keepFailed)
           << static_cast<uint64_t>(settings.keepGoing)
-          // TODO(tazjin): Remove the verbosity stuff here.
-          << static_cast<uint64_t>(settings.tryFallback) << compat::kInfo
-          << settings.maxBuildJobs << settings.maxSilentTime
-          << 1u
-          // TODO(tazjin): what behaviour does this toggle remotely?
-          << (settings.verboseBuild ? compat::kError : compat::kVomit)
-          << 0  // obsolete log type
-          << 0  /* obsolete print build trace */
+          << static_cast<uint64_t>(settings.tryFallback)
+          << /* previously: verbosity = */ 0 << settings.maxBuildJobs
+          << settings.maxSilentTime << 1u
+          << /* previously: remote verbosity = */ 0 << 0  // obsolete log type
+          << 0 /* obsolete print build trace */
           << settings.buildCores
           << static_cast<uint64_t>(settings.useSubstitutes);
 
diff --git a/third_party/nix/src/libutil/CMakeLists.txt b/third_party/nix/src/libutil/CMakeLists.txt
index a9736b37bc05..53a0cb2bc45c 100644
--- a/third_party/nix/src/libutil/CMakeLists.txt
+++ b/third_party/nix/src/libutil/CMakeLists.txt
@@ -18,7 +18,6 @@ set(HEADER_FILES
     lru-cache.hh
     monitor-fd.hh
     pool.hh
-    prefork-compat.hh
     ref.hh
     serialise.hh
     sync.hh
diff --git a/third_party/nix/src/libutil/prefork-compat.hh b/third_party/nix/src/libutil/prefork-compat.hh
deleted file mode 100644
index ae9c25e5397b..000000000000
--- a/third_party/nix/src/libutil/prefork-compat.hh
+++ /dev/null
@@ -1,21 +0,0 @@
-// This file exists to preserve compatibility with the pre-fork
-// version of Nix (2.3.4).
-//
-// During the refactoring, various structures are getting ripped out
-// and replaced with the dummies below while code is being cleaned up.
-
-#ifndef NIX_SRC_LIBUTIL_PREFORK_COMPAT_H_
-#define NIX_SRC_LIBUTIL_PREFORK_COMPAT_H_
-
-namespace nix::compat {
-
-// This is used in remote-store.cc for various things that expect the
-// old logging protocol when talking over the wire. It will be removed
-// hen the worker protocol is redone.
-enum [[deprecated("old logging compat only")]] Verbosity{
-    kError = 0, kWarn, kInfo, kTalkative, kChatty, kDebug, kVomit,
-};
-
-}  // namespace nix::compat
-
-#endif  // NIX_SRC_LIBUTIL_PREFORK_COMPAT_H_