bintools-wrapper: fix late‐bound command references

This ports 985072e to bintools-wrapper.

Co-authored-by: Artturin <Artturin@artturin.com>
Co-authored-by: IlyaNiklyaev <ilya.niklyaev@gmail.com>

pkgs/build-support/bintools-wrapper/default.nix

@@ -403,6 +403,8 @@ stdenvNoCC.mkDerivation {
     # TODO(@sternenseemann): rename env var via stdenv rebuild
     shell = (getBin runtimeShell + runtimeShell.shellPath or "");
     gnugrep_bin = optionalString (!nativeTools) gnugrep;
+    rm = if nativeTools then "rm" else lib.getExe' coreutils "rm";
+    mktemp = if nativeTools then "mktemp" else lib.getExe' coreutils "mktemp";
     wrapperName = "BINTOOLS_WRAPPER";
     inherit dynamicLinker targetPrefix suffixSalt coreutils_bin;
     inherit bintools_bin libc_bin libc_dev libc_lib;

pkgs/build-support/bintools-wrapper/ld-wrapper.sh

@@ -251,8 +251,8 @@ PATH="$path_backup"
 # Old bash workaround, see above.
 
 if (( "${NIX_LD_USE_RESPONSE_FILE:-@use_response_file_by_default@}" >= 1 )); then
-    responseFile=$(mktemp "${TMPDIR:-/tmp}/ld-params.XXXXXX")
-    trap 'rm -f -- "$responseFile"' EXIT
+    responseFile=$(@mktemp@ "${TMPDIR:-/tmp}/ld-params.XXXXXX")
+    trap '@rm@ -f -- "$responseFile"' EXIT
     printf "%q\n" \
        ${extraBefore+"${extraBefore[@]}"} \
        ${params+"${params[@]}"} \