push sheeet

pkgs/build-support/kernel/modules-closure.nix

@@ -0,0 +1,32 @@
+# Given a kernel build (with modules in $kernel/lib/modules/VERSION),
+# produce a module tree in $out/lib/modules/VERSION that contains only
+# the modules identified by `rootModules', plus their dependencies.
+# Also generate an appropriate modules.dep.
+
+{
+  stdenvNoCC,
+  kernel,
+  firmware,
+  nukeReferences,
+  rootModules,
+  kmod,
+  allowMissing ? false,
+  extraFirmwarePaths ? [ ],
+}:
+
+stdenvNoCC.mkDerivation {
+  name = kernel.name + "-shrunk";
+  builder = ./modules-closure.sh;
+  nativeBuildInputs = [
+    nukeReferences
+    kmod
+  ];
+  inherit
+    kernel
+    firmware
+    rootModules
+    allowMissing
+    extraFirmwarePaths
+    ;
+  allowedReferences = [ "out" ];
+}