From fddd605d5cf1296d9e473142b2f3ae00d6894597 Mon Sep 17 00:00:00 2001
From: Emery Hemingway <ehmry@posteo.net>
Date: Sat, 4 Apr 2020 12:26:06 +0530
Subject: [PATCH] Skip libcxx for Genode

---
 overlay/llvm-10/default.nix | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/overlay/llvm-10/default.nix b/overlay/llvm-10/default.nix
index 8011718..b24ea5d 100644
--- a/overlay/llvm-10/default.nix
+++ b/overlay/llvm-10/default.nix
@@ -186,16 +186,22 @@ let
 
     libcxxStdenv = overrideCC stdenv buildLlvmTools.libcxxClang;
 
-    libcxx = callPackage ./libc++ ({} //
-      (stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) {
-        stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx;
-      }));
+    libcxx = if stdenv.targetPlatform.isGenode then
+      null
+    else
+      callPackage ./libc++ ({ }
+        // (stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) {
+          stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx;
+        }));
 
-    libcxxabi = callPackage ./libc++abi.nix ({} //
-      (stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) {
-        stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx;
-        libunwind = libraries.libunwind;
-      }));
+    libcxxabi = if stdenv.targetPlatform.isGenode then
+      null
+    else
+      callPackage ./libc++abi.nix ({ }
+        // (stdenv.lib.optionalAttrs (stdenv.hostPlatform.useLLVM or false) {
+          stdenv = overrideCC stdenv buildLlvmTools.lldClangNoLibcxx;
+          libunwind = libraries.libunwind;
+        }));
 
     openmp = callPackage ./openmp.nix {};