WIP get settings info out of headers, out of libutil

Also make a tiny bit of progress on libstore

Author: Ericson2314

maintainers/flake-module.nix

@@ -180,8 +180,14 @@
               ''^src/libflake/flake/lockfile\.cc$''
               ''^src/libflake/flake/lockfile\.hh$''
               ''^src/libflake/flake/url-name\.cc$''
+              ''^src/libmain/args/root\.hh$''
+              ''^src/libmain/args\.cc$''
+              ''^src/libmain/args\.hh$''
               ''^src/libmain/common-args\.cc$''
               ''^src/libmain/common-args\.hh$''
+              ''^src/libmain/config-impl\.hh$''
+              ''^src/libmain/config\.cc$''
+              ''^src/libmain/config\.hh$''
               ''^src/libmain/loggers\.cc$''
               ''^src/libmain/loggers\.hh$''
               ''^src/libmain/progress-bar\.cc$''
@@ -312,19 +318,13 @@
               ''^src/libutil-c/nix_api_util_internal\.h$''
               ''^src/libutil/archive\.cc$''
               ''^src/libutil/archive\.hh$''
-              ''^src/libutil/args\.cc$''
-              ''^src/libutil/args\.hh$''
-              ''^src/libutil/args/root\.hh$''
               ''^src/libutil/callback\.hh$''
               ''^src/libutil/canon-path\.cc$''
               ''^src/libutil/canon-path\.hh$''
               ''^src/libutil/chunked-vector\.hh$''
               ''^src/libutil/closure\.hh$''
               ''^src/libutil/comparator\.hh$''
               ''^src/libutil/compute-levels\.cc$''
-              ''^src/libutil/config-impl\.hh$''
-              ''^src/libutil/config\.cc$''
-              ''^src/libutil/config\.hh$''
               ''^src/libutil/current-process\.cc$''
               ''^src/libutil/current-process\.hh$''
               ''^src/libutil/english\.cc$''

src/libutil/abstract-setting-to-json.hh renamed to src/libmain/abstract-setting-to-json.hh

@@ -0,0 +1,44 @@
+namespace nix {
+
+#include "fs-sink.hh"
+#include "logging.hh"
+
+struct LoggerSettings : Config
+{
+    Setting<bool> showTrace{
+        this,
+        false,
+        "show-trace",
+        R"(
+          Whether Nix should print out a stack trace in case of Nix
+          expression evaluation errors.
+        )"};
+};
+
+static GlobalConfig::Register r1(&restoreSinkSettings);
+
+struct RestoreSinkSettings : Config
+{
+    Setting<bool> preallocateContents{
+        this, false, "preallocate-contents", "Whether to preallocate files when writing objects with known size."};
+};
+
+static GlobalConfig::Register rLoggerSettings(&loggerSettings);
+
+struct ArchiveSettings : Config
+{
+    Setting<bool> useCaseHack
+    {
+        this,
+#if __APPLE__
+            true,
+#else
+            false,
+#endif
+            "use-case-hack", "Whether to enable a macOS-specific hack for dealing with file name case collisions."
+    };
+};
+
+static GlobalConfig::Register rArchiveSettings(&archiveSettings);
+
+}

src/libutil/args.cc renamed to src/libmain/args.cc

@@ -464,26 +464,4 @@ void OptionalPathSetting::operator =(const std::optional<Path> & v)
     this->assign(v);
 }
 
-bool ExperimentalFeatureSettings::isEnabled(const ExperimentalFeature & feature) const
-{
-    auto & f = experimentalFeatures.get();
-    return std::find(f.begin(), f.end(), feature) != f.end();
-}
-
-void ExperimentalFeatureSettings::require(const ExperimentalFeature & feature) const
-{
-    if (!isEnabled(feature))
-        throw MissingExperimentalFeature(feature);
-}
-
-bool ExperimentalFeatureSettings::isEnabled(const std::optional<ExperimentalFeature> & feature) const
-{
-    return !feature || isEnabled(*feature);
-}
-
-void ExperimentalFeatureSettings::require(const std::optional<ExperimentalFeature> & feature) const
-{
-    if (feature) require(*feature);
-}
-
 }