diff --git a/ci/eval/default.nix b/ci/eval/default.nix
index 927dec5a908dc..a53e7de3a56be 100644
--- a/ci/eval/default.nix
+++ b/ci/eval/default.nix
@@ -72,6 +72,7 @@ let
       chunkSize,
       checkMeta ? true,
       includeBroken ? true,
+      includeSubpackages ? evalSystem != "aarch64-darwin" && evalSystem != "x86_64-darwin",
       # Whether to just evaluate a single chunk for quick testing
       quickTest ? false,
     }:
@@ -100,6 +101,7 @@ let
           --arg systems "[ \"$system\" ]" \
           --arg checkMeta ${lib.boolToString checkMeta} \
           --arg includeBroken ${lib.boolToString includeBroken} \
+          --arg includeSubpackages ${lib.boolToString includeSubpackages} \
           -I ${nixpkgs} \
           -I ${attrpathFile} \
           > "$outputDir/result/$myChunk"
diff --git a/pkgs/stdenv/generic/check-meta.nix b/pkgs/stdenv/generic/check-meta.nix
index 502343f01fb32..b3c6f8327f599 100644
--- a/pkgs/stdenv/generic/check-meta.nix
+++ b/pkgs/stdenv/generic/check-meta.nix
@@ -491,6 +491,7 @@ let
       broken = isMarkedBroken attrs;
       unsupported = hasUnsupportedPlatform attrs;
       insecure = isMarkedInsecure attrs;
+      hydraPlatforms = if config.allowHydra then attrs.hydraPlatforms or [] else [];
 
       available = validity.valid != "no"
       && (if config.checkMetaRecursively or false
diff --git a/pkgs/top-level/config.nix b/pkgs/top-level/config.nix
index a4e1116a16dd0..aa211c946625f 100644
--- a/pkgs/top-level/config.nix
+++ b/pkgs/top-level/config.nix
@@ -92,6 +92,24 @@ let
       '';
     };
 
+    allowHydra = mkOption {
+      type = types.bool;
+      default = true;
+      defaultText = literalExpression ''true'';
+      description = ''
+        Whether to enable Hydra building of all packages.
+      '';
+    };
+
+    allowHydraSubpackages = mkOption {
+      type = types.bool;
+      default = false;
+      defaultText = literalExpression ''false'';
+      description = ''
+        Whether to enable Hydra building of all sub-nixpkgs instances.
+      '';
+    };
+
     allowUnfree = mkOption {
       type = types.bool;
       default = false;
diff --git a/pkgs/top-level/release-attrpaths-parallel.nix b/pkgs/top-level/release-attrpaths-parallel.nix
index 46d10c6a95041..c5372d4d0459d 100644
--- a/pkgs/top-level/release-attrpaths-parallel.nix
+++ b/pkgs/top-level/release-attrpaths-parallel.nix
@@ -9,6 +9,7 @@
   myChunk,
   checkMeta,
   includeBroken,
+  includeSubpackages,
   systems,
 }:
 
@@ -18,7 +19,12 @@ let
 
   unfiltered = import ./release-outpaths.nix {
     inherit path;
-    inherit checkMeta includeBroken systems;
+    inherit
+      checkMeta
+      includeBroken
+      includeSubpackages
+      systems
+      ;
   };
 
   # Turns the unfiltered recursive attribute set into one that is limited to myAttrpaths
diff --git a/pkgs/top-level/release-attrpaths-superset.nix b/pkgs/top-level/release-attrpaths-superset.nix
index 9a89062bd1749..5f07bd3a83ef6 100644
--- a/pkgs/top-level/release-attrpaths-superset.nix
+++ b/pkgs/top-level/release-attrpaths-superset.nix
@@ -49,7 +49,6 @@ let
     targetPackages = true;
 
     # cross packagesets
-    pkgsLLVM = true;
     pkgsMusl = true;
     pkgsStatic = true;
     pkgsCross = true;
@@ -186,10 +185,6 @@ let
     # I am not entirely sure why these three packages end up in
     # the Hydra jobset.  But they do, and they don't meet the
     # criteria above, so at the moment they are special-cased.
-    [
-      "pkgsLLVM"
-      "stdenv"
-    ]
     [
       "pkgsStatic"
       "stdenv"
diff --git a/pkgs/top-level/release-outpaths.nix b/pkgs/top-level/release-outpaths.nix
index 0b70ea631244f..f0b837b190210 100644
--- a/pkgs/top-level/release-outpaths.nix
+++ b/pkgs/top-level/release-outpaths.nix
@@ -7,6 +7,7 @@
 {
   checkMeta,
   includeBroken ? true, # set this to false to exclude meta.broken packages from the output
+  includeSubpackages ? true, # set this to false to exclude "pkgs*"
   path ? ./../..,
 
   # used by pkgs/top-level/release-attrnames-superset.nix
@@ -28,6 +29,7 @@ let
             allowAliases = false;
             allowBroken = includeBroken;
             allowUnfree = false;
+            allowHydraSubpackages = includeSubpackages;
             allowInsecurePredicate = x: true;
             checkMeta = checkMeta;
 
@@ -84,7 +86,7 @@ let
     "stdenvBootstrapTools"
     "moduleSystem"
     "lib-tests" # these just confuse the output
-  ];
+  ] ++ lib.optional (!includeSubpackages) "pkgsLLVM";
 
 in
 tweak (builtins.removeAttrs hydraJobs blacklist)
diff --git a/pkgs/top-level/release.nix b/pkgs/top-level/release.nix
index 0140f0bd9d6a4..86e42546fe887 100644
--- a/pkgs/top-level/release.nix
+++ b/pkgs/top-level/release.nix
@@ -69,6 +69,7 @@ let
     id
     isDerivation
     optionals
+    subtractLists
     ;
 
   inherit (release-lib.lib.attrsets) unionOfDisjoint;
@@ -320,6 +321,8 @@ let
   jobs = let
     packagePlatforms = release-lib.recursiveMapPackages
       (if attrNamesOnly then id else release-lib.getPlatforms);
+    packagePlatformsExclude = systems: release-lib.recursiveMapPackages
+      (if attrNamesOnly then id else (drv: subtractLists (release-lib.getPlatforms drv) systems));
     packageJobs = packagePlatforms pkgs // {
       haskell.compiler = packagePlatforms pkgs.haskell.compiler;
       haskellPackages = packagePlatforms pkgs.haskellPackages;
@@ -340,7 +343,7 @@ let
       idrisPackages = packagePlatforms pkgs.idrisPackages;
       agdaPackages = packagePlatforms pkgs.agdaPackages;
 
-      pkgsLLVM.stdenv = [ "x86_64-linux" "aarch64-linux" ];
+      pkgsLLVM = packagePlatformsExclude [ "aarch64-darwin" "x86_64-darwin" ] pkgs.pkgsLLVM;
       pkgsArocc.stdenv = [ "x86_64-linux" "aarch64-linux" ];
       pkgsZig.stdenv = [ "x86_64-linux" "aarch64-linux" ];
       pkgsMusl.stdenv = [ "x86_64-linux" "aarch64-linux" ];
diff --git a/pkgs/top-level/stage.nix b/pkgs/top-level/stage.nix
index 1cedd8dd18458..9918c9b23b46d 100644
--- a/pkgs/top-level/stage.nix
+++ b/pkgs/top-level/stage.nix
@@ -175,6 +175,10 @@ let
     lib.optionalAttrs allowCustomOverrides
       ((config.packageOverrides or (super: {})) super);
 
+  nixpkgsFunSub = attrs: nixpkgsFun (attrs // {
+    allowHydra = config.allowHydraSubpackages;
+  });
+
   # Convenience attributes for instantitating package sets. Each of
   # these will instantiate a new version of allPackages. Currently the
   # following package sets are provided:
@@ -192,7 +196,7 @@ let
                               nixpkgsFun { inherit crossSystem; })
                               lib.systems.examples;
 
-    pkgsLLVM = nixpkgsFun {
+    pkgsLLVM = if stdenv.hostPlatform.isDarwin then self else nixpkgsFunSub {
       overlays = [
         (self': super': {
           pkgsLLVM = super';
@@ -207,7 +211,7 @@ let
       };
     };
 
-    pkgsArocc = nixpkgsFun {
+    pkgsArocc = nixpkgsFunSub {
       overlays = [
         (self': super': {
           pkgsArocc = super';
@@ -222,7 +226,7 @@ let
       };
     };
 
-    pkgsZig = nixpkgsFun {
+    pkgsZig = nixpkgsFunSub {
       overlays = [
         (self': super': {
           pkgsZig = super';
@@ -240,7 +244,7 @@ let
     # All packages built with the Musl libc. This will override the
     # default GNU libc on Linux systems. Non-Linux systems are not
     # supported. 32-bit is also not supported.
-    pkgsMusl = if stdenv.hostPlatform.isLinux && stdenv.buildPlatform.is64bit then nixpkgsFun {
+    pkgsMusl = if stdenv.hostPlatform.isLinux && stdenv.buildPlatform.is64bit then nixpkgsFunSub {
       overlays = [ (self': super': {
         pkgsMusl = super';
       })] ++ overlays;
@@ -252,7 +256,7 @@ let
 
     # All packages built for i686 Linux.
     # Used by wine, firefox with debugging version of Flash, ...
-    pkgsi686Linux = if stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86 then nixpkgsFun {
+    pkgsi686Linux = if stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isx86 then nixpkgsFunSub {
       overlays = [ (self': super': {
         pkgsi686Linux = super';
       })] ++ overlays;
@@ -265,7 +269,7 @@ let
     } else throw "i686 Linux package set can only be used with the x86 family.";
 
     # x86_64-darwin packages for aarch64-darwin users to use with Rosetta for incompatible packages
-    pkgsx86_64Darwin = if stdenv.hostPlatform.isDarwin then nixpkgsFun {
+    pkgsx86_64Darwin = if stdenv.hostPlatform.isDarwin then nixpkgsFunSub {
       overlays = [ (self': super': {
         pkgsx86_64Darwin = super';
       })] ++ overlays;
@@ -282,7 +286,7 @@ let
     pkgsLinux =
       if stdenv.hostPlatform.isLinux
       then self
-      else nixpkgsFun {
+      else nixpkgsFunSub {
         localSystem = lib.systems.elaborate "${stdenv.hostPlatform.parsed.cpu.name}-linux";
       };
 
@@ -292,7 +296,7 @@ let
     appendOverlays = extraOverlays:
       if extraOverlays == []
       then self
-      else nixpkgsFun { overlays = args.overlays ++ extraOverlays; };
+      else nixpkgsFunSub { overlays = args.overlays ++ extraOverlays; };
 
     # NOTE: each call to extend causes a full nixpkgs rebuild, adding ~130MB
     #       of allocations. DO NOT USE THIS IN NIXPKGS.
@@ -305,7 +309,7 @@ let
 
     # Fully static packages.
     # Currently uses Musl on Linux (couldn’t get static glibc to work).
-    pkgsStatic = nixpkgsFun ({
+    pkgsStatic = nixpkgsFunSub ({
       overlays = [ (self': super': {
         pkgsStatic = super';
       })] ++ overlays;
@@ -321,7 +325,7 @@ let
       };
     });
 
-    pkgsExtraHardening = nixpkgsFun {
+    pkgsExtraHardening = nixpkgsFunSub {
       overlays = [
         (self': super': {
           pkgsExtraHardening = super';