flake.nix dmd build fix overlay: revert to GCC14

- revert to using GCC14: (current) GCC 15
  introduced nullptr in its headers, and DMD's
  ImportC parser needs update to handle it,
  monitor and update

- (nix ldc overlay, minor comsetic)

1 files changed, 3 insertions, 1 deletions

diff --git a/nix-overlays/ldc/package.nix b/nix-overlays/ldc/package.nix
index 75eb898..b5daa75 100644
--- a/nix-overlays/ldc/package.nix
+++ b/nix-overlays/ldc/package.nix
@@ -138,6 +138,8 @@ stdenv.mkDerivation (finalAttrs: {
     find $out/bin -type f -exec ${removeReferencesTo}/bin/remove-references-to -t ${ldcBootstrap} '{}' +
   '';
 
+  # doCheck = false;
+
   disallowedReferences = [ ldcBootstrap ];
 
   meta = with lib; {
@@ -181,6 +183,6 @@ stdenv.mkDerivation (finalAttrs: {
       no-references-to-compiler = helloWorld.overrideAttrs {
         disallowedReferences = [ ldc ];
         dFlags = ["-g"];
+      };
     };
-  };
 })