Punt on improper global flags for now

src/nix/main.cc

@@ -82,6 +82,7 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
  .description = "Print full build logs on standard error.",
  .category = loggingCategory,
  .handler = {[&]() { logger->setPrintBuildLogs(true); }},
+ .experimentalFeature = Xp::NixCommand,
  });
 
  addFlag({
@@ -97,13 +98,15 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
  .description = "Disable substituters and consider all previously downloaded files up-to-date.",
  .category = miscCategory,
  .handler = {[&]() { useNet = false; }},
+ .experimentalFeature = Xp::NixCommand,
  });
 
  addFlag({
  .longName = "refresh",
  .description = "Consider all previously downloaded files out-of-date.",
  .category = miscCategory,
  .handler = {[&]() { refresh = true; }},
+ .experimentalFeature = Xp::NixCommand,
  });
  }
 

tests/experimental-features.sh

@@ -21,3 +21,15 @@ both_ways store gc --help
 
 expect 1 nix --experimental-features 'nix-command' show-config --flake-registry 'https://no'
 nix --experimental-features 'nix-command flakes' show-config --flake-registry 'https://no'
+
+# Double check this is stable
+nix --experimental-features '' --help
+
+# These 3 arguments are currently given to all commands, which is wrong (as not
+# all care). To deal with fixing later, we simply make them require the
+# nix-command experimental features --- it so happens that the commands we wish
+# stabilizing to do not need them anyways.
+for arg in '--print-build-logs' '--offline' '--refresh'; do
+ nix --experimental-features 'nix-command' "$arg" --help
+ ! nix --experimental-features '' "$arg" --help
+done