From f6a0f5c6422200764b7929064c39dcf4bb0e9cd6 Mon Sep 17 00:00:00 2001
From: hutli <jensstaermose@hotmail.com>
Date: Thu, 15 Feb 2024 14:25:04 +0100
Subject: [PATCH] nix: .#widnows: init

initial nix build for windows using zig

mingwW64 build

removes nix zig windows build

removes nix zig windows build

removed unnessesary glibc.static

removed unnessesary import of pkgs in nix

fixed missing trailing newline on non-windows nix builds

overriding stdenv when building for crosscompiling to windows in nix

better variables when crosscompiling windows in nix

cross compile windows on macos

removed trailing whitespace

remove unnessesary overwrite of "CMAKE_SYSTEM_NAME" in nix windows build

nix: keep file extension when copying result files during cross compile for windows

nix: better checking for file extensions when using MinGW

nix: using hostPlatform instead of targetPlatform when cross compiling for Windows

using hostPlatform.extensions.executable to extract executable format
---
 .devops/nix/package.nix | 6 ++++--
 flake.nix               | 3 +++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/.devops/nix/package.nix b/.devops/nix/package.nix
index b651f9e61..83858c829 100644
--- a/.devops/nix/package.nix
+++ b/.devops/nix/package.nix
@@ -67,6 +67,8 @@ let
     strings.optionalString (suffices != [ ])
       ", accelerated with ${strings.concatStringsSep ", " suffices}";
 
+  executableSuffix = effectiveStdenv.hostPlatform.extensions.executable;
+
   # TODO: package the Python in this repository in a Nix-like way.
   # It'd be nice to migrate to buildPythonPackage, as well as ensure this repo
   # is PEP 517-compatible, and ensure the correct .dist-info is generated.
@@ -244,8 +246,8 @@ effectiveStdenv.mkDerivation (
     # TODO(SomeoneSerge): It's better to add proper install targets at the CMake level,
     # if they haven't been added yet.
     postInstall = ''
-      mv $out/bin/main $out/bin/llama
-      mv $out/bin/server $out/bin/llama-server
+      mv $out/bin/main${executableSuffix} $out/bin/llama${executableSuffix}
+      mv $out/bin/server${executableSuffix} $out/bin/llama-server${executableSuffix}
       mkdir -p $out/include
       cp $src/llama.h $out/include/
     '';
diff --git a/flake.nix b/flake.nix
index 9a528a66b..cdce3e0a9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -155,6 +155,9 @@
               {
                 default = config.legacyPackages.llamaPackages.llama-cpp;
                 vulkan = config.packages.default.override { useVulkan = true; };
+                windows = config.legacyPackages.llamaPackages.llama-cpp.override {
+                  stdenv = pkgs.pkgsCross.mingwW64.stdenv;
+                };
               }
               // lib.optionalAttrs pkgs.stdenv.isLinux {
                 opencl = config.packages.default.override { useOpenCL = true; };