From ed59c747b6091c43b7ec9d7ad0e55a1bfc6d22e1 Mon Sep 17 00:00:00 2001
From: div72 <noreply@div72.xyz>
Date: Thu, 9 Jan 2025 11:25:43 +0300
Subject: [PATCH] _9base: fix build on x86_64-linux

The previous Darwin breakage due to p9mbtowc also happens on Linux now.
---
 pkgs/by-name/_9/_9base/package.nix | 2 --
 1 file changed, 2 deletions(-)

diff --git a/pkgs/by-name/_9/_9base/package.nix b/pkgs/by-name/_9/_9base/package.nix
index 983b569062bc..f6595fe5fdef 100644
--- a/pkgs/by-name/_9/_9base/package.nix
+++ b/pkgs/by-name/_9/_9base/package.nix
@@ -49,8 +49,6 @@ stdenv.mkDerivation {
       # hide really common warning that floods the logs:
       #   warning: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
       "-D_DEFAULT_SOURCE"
-    ]
-    ++ lib.optionals stdenv.cc.isClang [
       # error: call to undeclared function 'p9mbtowc'; ISO C99 and later do not support implicit function declarations
       "-Wno-error=implicit-function-declaration"
     ]