pkgs.stdenv.overrides

The following is the current implementation of this function.

self: super:
          {
            inherit (prevStage)
              gzip
              bzip2
              xz
              bashNonInteractive
              coreutils
              diffutils
              findutils
              gawk
              gnused
              gnugrep
              gnupatch
              patchelf
              attr
              acl
              zlib
              libunistring
              ;
            inherit (prevStage.gnugrep) pcre2;
            ${localSystem.libc} = prevStage.${localSystem.libc};

            # Hack: avoid libidn2.{bin,dev} referencing bootstrap tools.  There's a logical cycle.
            libidn2 = import ../../development/libraries/libidn2/no-bootstrap-reference.nix {
              inherit lib;
              inherit (prevStage) libidn2;
              inherit (self)
                stdenv
                runCommandLocal
                patchelf
                libunistring
                ;
            };
          }
          // lib.optionalAttrs (super.stdenv.targetPlatform == localSystem) {
            # Need to get rid of these when cross-compiling.
            inherit (prevStage) binutils binutils-unwrapped;
            gcc = cc;
          }