expand-response-params: Build more normally

pkgs/build-support/expand-response-params/default.nix

@@ -3,11 +3,17 @@
 stdenv.mkDerivation {
   name = "expand-response-params";
   src = ./expand-response-params.c;
-  buildCommand = ''
-    # Work around "stdenv-darwin-boot-2 is not allowed to refer to path /nix/store/...-expand-response-params.c"
+  # Work around "stdenv-darwin-boot-2 is not allowed to refer to path
+  # /nix/store/...-expand-response-params.c"
+  unpackPhase = ''
     cp "$src" expand-response-params.c
-    "$CC" -std=c99 -O3 -o "$out" expand-response-params.c
-    strip -S $out
-    ${stdenv.lib.optionalString stdenv.hostPlatform.isLinux "patchelf --shrink-rpath $out"}
+    src=$PWD
+  '';
+  buildPhase = ''
+    "$CC" -std=c99 -O3 -o "expand-response-params" expand-response-params.c
+  '';
+  installPhase = ''
+    mkdir -p $prefix/bin
+    mv expand-response-params $prefix/bin/
   '';
 }