Merge pull request #141942 from Mic92/zfs-size

zfs: strip debug symbols (closure size)

pkgs/os-specific/linux/zfs/default.nix

···
         "INSTALL_MOD_PATH=\${out}"
       ];
 
+      postBuild = optionalString buildKernel ''
+         find . -name "*.ko" -print0 | xargs -0 -P$NIX_BUILD_CORES strip --strip-debug
+      '';
+
       postInstall = optionalString buildKernel ''
         # Add reference that cannot be detected due to compressed kernel module
         mkdir -p "$out/nix-support"