Unbreak busted linking.

We need to pass c++abi as well as c++, however double-conversion does not specify those.
input-output-hk · Dec 12, 2023 · 72e4c13 · 72e4c13
1 parent 2a1000b
commit 72e4c13
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/overlays/darwin.nix b/overlays/darwin.nix
@@ -14,6 +14,13 @@ _final: prev:
               # https://github.com/NixOS/nixpkgs/pull/47676
               # https://github.com/NixOS/nixpkgs/issues/45042
               x509-system.components.library.preBuild = "substituteInPlace System/X509/MacOS.hs --replace security /usr/bin/security";
+            } // pkgs.lib.optionalAttrs (pkgs.stdenv.hostPlatform.isDarwin)
+            {
+              # fix broken c++ library selection for GHC < 9.4
+              # for GHC >= 9.4 the system-cxx-std-lib pseudo-package does this.
+              double-conversion.components.library.preConfigure = ''
+                substituteInPlace double-conversion.cabal --replace 'extra-libraries: c++' 'extra-libraries: c++ c++abi'
+              '';
             };
         })
     ];