diff --git a/pkgs/by-name/ht/httpdirfs/package.nix b/pkgs/by-name/ht/httpdirfs/package.nix
index df8975a197da..772b3d27149f 100644
--- a/pkgs/by-name/ht/httpdirfs/package.nix
+++ b/pkgs/by-name/ht/httpdirfs/package.nix
@@ -41,6 +41,11 @@ stdenv.mkDerivation (finalAttrs: {
     libuuid
   ];
 
+  env.NIX_CFLAGS_COMPILE = toString [
+    "-Wno-error=attribute-warning"
+    "-Wno-error=pedantic"
+  ];
+
   passthru = {
     tests.version = testers.testVersion {
       command = "${lib.getExe finalAttrs.finalPackage} --version";