koboldcpp: backport old interfaces

Refs: https://github.com/NixOS/nixpkgs/pull/327102#discussion_r1677136308
Refs: https://github.com/NixOS/nixpkgs/pull/327102#discussion_r1677136419
Refs: https://github.com/NixOS/nixpkgs/pull/327102#discussion_r1677137201

Co-authored-by: SomeoneSerge <sergei.kozlukov@aalto.fi>

pkgs/by-name/ko/koboldcpp/package.nix

@@ -5,6 +5,7 @@
   makeWrapper,
   gitUpdater,
   python3Packages,
+  python311Packages ? null, # Ignored. Kept for compatibility with the release
   tk,
   addDriverRunpath,
 
@@ -31,6 +32,8 @@
   vulkan-loader,
 
   metalSupport ? stdenv.isDarwin && stdenv.isAarch64,
+  march ? "",
+  mtune ? "",
 }:
 
 let
@@ -106,6 +109,14 @@ effectiveStdenv.mkDerivation (finalAttrs: {
 
   env.NIX_LDFLAGS = lib.concatStringsSep " " (finalAttrs.darwinLdFlags ++ finalAttrs.metalLdFlags);
 
+  env.NIX_CFLAGS_COMPILE =
+    lib.optionalString (march != "") (
+      lib.warn "koboldcpp: the march argument is only kept for compatibility; use overrideAttrs intead" "-march=${march}"
+    )
+    + lib.optionalString (mtune != "") (
+      lib.warn "koboldcpp: the mtune argument is only kept for compatibility; use overrideAttrs intead" "-mtune=${mtune}"
+    );
+
   makeFlags = [
     (makeBool "LLAMA_OPENBLAS" openblasSupport)
     (makeBool "LLAMA_CUBLAS" cublasSupport)