Merge changes I29e66ad8,I77ea62cd,I7cd58d92 into mainHEADmain

* changes:
  treewide: make more settings conditionally available
  libstore/build: only send overridden settings to the build hook
  treewide: consistently mark overridden settings as such

1 files changed, 4 insertions, 4 deletions

diff --git a/src/libmain/shared.cc b/src/libmain/shared.cc
index 029b457b1..77c497237 100644
--- a/src/libmain/shared.cc
+++ b/src/libmain/shared.cc
@@ -196,20 +196,20 @@ LegacyArgs::LegacyArgs(const std::string & programName,
         .longName = "keep-failed",
         .shortName ='K',
         .description = "Keep temporary directories of failed builds.",
-        .handler = {&(bool&) settings.keepFailed, true},
+        .handler = {[&]() { settings.keepFailed.override(true); }},
     });
 
     addFlag({
         .longName = "keep-going",
         .shortName ='k',
         .description = "Keep going after a build fails.",
-        .handler = {&(bool&) settings.keepGoing, true},
+        .handler = {[&]() { settings.keepGoing.override(true); }},
     });
 
     addFlag({
         .longName = "fallback",
         .description = "Build from source if substitution fails.",
-        .handler = {&(bool&) settings.tryFallback, true},
+        .handler = {[&]() { settings.tryFallback.override(true); }},
     });
 
     auto intSettingAlias = [&](char shortName, const std::string & longName,
@@ -247,7 +247,7 @@ LegacyArgs::LegacyArgs(const std::string & programName,
         .longName = "store",
         .description = "The URL of the Nix store to use.",
         .labels = {"store-uri"},
-        .handler = {&(std::string&) settings.storeUri},
+        .handler = {[&](std::string storeUri) { settings.storeUri.override(storeUri); }},
     });
 }