From bed05706295d12e0c1c7c1238f9f6f455f630443 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Wed, 19 Nov 2025 11:50:01 +0100
Subject: [PATCH] Registry: Drop settings field

It's not used anywhere.
---
 src/libcmd/common-eval-args.cc                   |  2 +-
 src/libcmd/installables.cc                       |  1 -
 src/libfetchers/include/nix/fetchers/registry.hh |  9 +++------
 src/libfetchers/registry.cc                      | 16 ++++++++--------
 4 files changed, 12 insertions(+), 16 deletions(-)

diff --git a/src/libcmd/common-eval-args.cc b/src/libcmd/common-eval-args.cc
index 2cbea16e0..8b9f49266 100644
--- a/src/libcmd/common-eval-args.cc
+++ b/src/libcmd/common-eval-args.cc
@@ -132,7 +132,7 @@ MixEvalArgs::MixEvalArgs()
             fetchers::Attrs extraAttrs;
             if (to.subdir != "")
                 extraAttrs["dir"] = to.subdir;
-            fetchers::overrideRegistry(fetchSettings, from.input, to.input, extraAttrs);
+            fetchers::overrideRegistry(from.input, to.input, extraAttrs);
         }},
         .completer = {[&](AddCompletions & completions, size_t, std::string_view prefix) {
             completeFlakeRef(completions, openStore(), prefix);
diff --git a/src/libcmd/installables.cc b/src/libcmd/installables.cc
index 4548c9725..36777fb9c 100644
--- a/src/libcmd/installables.cc
+++ b/src/libcmd/installables.cc
@@ -185,7 +185,6 @@ MixFlakeOptions::MixFlakeOptions()
                     }
 
                     overrideRegistry(
-                        fetchSettings,
                         fetchers::Input::fromAttrs(fetchSettings, {{"type", "indirect"}, {"id", inputName}}),
                         input3->lockedRef.input,
                         extraAttrs);
diff --git a/src/libfetchers/include/nix/fetchers/registry.hh b/src/libfetchers/include/nix/fetchers/registry.hh
index a403f0318..c9c8b162f 100644
--- a/src/libfetchers/include/nix/fetchers/registry.hh
+++ b/src/libfetchers/include/nix/fetchers/registry.hh
@@ -13,8 +13,6 @@ namespace nix::fetchers {
 
 struct Registry
 {
-    const Settings & settings;
-
     enum RegistryType {
         Flag = 0,
         User = 1,
@@ -34,9 +32,8 @@ struct Registry
 
     std::vector<Entry> entries;
 
-    Registry(const Settings & settings, RegistryType type)
-        : settings{settings}
-        , type{type}
+    Registry(RegistryType type)
+        : type{type}
     {
     }
 
@@ -59,7 +56,7 @@ Path getUserRegistryPath();
 
 Registries getRegistries(const Settings & settings, Store & store);
 
-void overrideRegistry(const Settings & settings, const Input & from, const Input & to, const Attrs & extraAttrs);
+void overrideRegistry(const Input & from, const Input & to, const Attrs & extraAttrs);
 
 enum class UseRegistries : int {
     No,
diff --git a/src/libfetchers/registry.cc b/src/libfetchers/registry.cc
index b2c8dc237..cb360f03c 100644
--- a/src/libfetchers/registry.cc
+++ b/src/libfetchers/registry.cc
@@ -14,10 +14,10 @@ std::shared_ptr<Registry> Registry::read(const Settings & settings, const Source
 {
     debug("reading registry '%s'", path);
 
-    auto registry = std::make_shared<Registry>(settings, type);
+    auto registry = std::make_shared<Registry>(type);
 
     if (!path.pathExists())
-        return std::make_shared<Registry>(settings, type);
+        return std::make_shared<Registry>(type);
 
     try {
 
@@ -125,15 +125,15 @@ std::shared_ptr<Registry> getCustomRegistry(const Settings & settings, const Pat
     return customRegistry;
 }
 
-std::shared_ptr<Registry> getFlagRegistry(const Settings & settings)
+std::shared_ptr<Registry> getFlagRegistry()
 {
-    static auto flagRegistry = std::make_shared<Registry>(settings, Registry::Flag);
+    static auto flagRegistry = std::make_shared<Registry>(Registry::Flag);
     return flagRegistry;
 }
 
-void overrideRegistry(const Settings & settings, const Input & from, const Input & to, const Attrs & extraAttrs)
+void overrideRegistry(const Input & from, const Input & to, const Attrs & extraAttrs)
 {
-    getFlagRegistry(settings)->add(from, to, extraAttrs);
+    getFlagRegistry()->add(from, to, extraAttrs);
 }
 
 static std::shared_ptr<Registry> getGlobalRegistry(const Settings & settings, Store & store)
@@ -141,7 +141,7 @@ static std::shared_ptr<Registry> getGlobalRegistry(const Settings & settings, St
     static auto reg = [&]() {
         auto path = settings.flakeRegistry.get();
         if (path == "") {
-            return std::make_shared<Registry>(settings, Registry::Global); // empty registry
+            return std::make_shared<Registry>(Registry::Global); // empty registry
         }
 
         return Registry::read(
@@ -165,7 +165,7 @@ static std::shared_ptr<Registry> getGlobalRegistry(const Settings & settings, St
 Registries getRegistries(const Settings & settings, Store & store)
 {
     Registries registries;
-    registries.push_back(getFlagRegistry(settings));
+    registries.push_back(getFlagRegistry());
     registries.push_back(getUserRegistry(settings));
     registries.push_back(getSystemRegistry(settings));
     registries.push_back(getGlobalRegistry(settings, store));