update to the latest stage2 compiler we can

.gitmodules

@@ -1,6 +1,6 @@
 [submodule "vendor/mach"]
 	path = vendor/mach
-	url = https://github.com/hexops/mach.git
+	url = https://github.com/mitchellh/mach.git
 [submodule "vendor/freetype"]
 	path = vendor/freetype
 	url = https://github.com/freetype/freetype.git

build.zig

@@ -2,7 +2,7 @@ const std = @import("std");
 const fs = std.fs;
 const Builder = std.build.Builder;
 const LibExeObjStep = std.build.LibExeObjStep;
-const glfw = @import("vendor/mach/glfw/build.zig");
+const glfw = @import("vendor/mach/libs/glfw/build.zig");
 const fontconfig = @import("pkg/fontconfig/build.zig");
 const freetype = @import("pkg/freetype/build.zig");
 const harfbuzz = @import("pkg/harfbuzz/build.zig");
@@ -12,7 +12,7 @@ const libpng = @import("pkg/libpng/build.zig");
 const utf8proc = @import("pkg/utf8proc/build.zig");
 const zlib = @import("pkg/zlib/build.zig");
 const tracylib = @import("pkg/tracy/build.zig");
-const system_sdk = @import("vendor/mach/glfw/system_sdk.zig");
+const system_sdk = @import("vendor/mach/libs/glfw/system_sdk.zig");
 
 // Build options, see the build options help for more info.
 var tracy: bool = false;
@@ -166,7 +166,7 @@ fn addDeps(
     step.addPackage(utf8proc.pkg);
 
     // We always statically compile glad
-    step.addIncludeDir("vendor/glad/include/");
+    step.addIncludePath("vendor/glad/include/");
     step.addCSourceFile("vendor/glad/src/gl.c", &.{});
 
     // Tracy

flake.lock

@@ -109,11 +109,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1662668669,
-        "narHash": "sha256-91R5xjCt1cLJBbYygtiQwXCex596/2cxsTneKUdnVwc=",
+        "lastModified": 1663935107,
+        "narHash": "sha256-uCA5Y3cn2Jk15VBRCUIq1lIb7mFyi3j2lp9Up+FbjFY=",
         "owner": "mitchellh",
         "repo": "zig-overlay",
-        "rev": "6ed17531becf61347f4f30b62ad22d21e14fc4da",
+        "rev": "39778bb594f9eed1c2673b08d0c29d52b6f7dfb2",
         "type": "github"
       },
       "original": {

nix/overlay.nix

@@ -12,8 +12,11 @@ final: prev: rec {
 
   wraptest = prev.callPackage ./wraptest.nix { };
 
+  # Last known working self-hosted with -fstage1
+  zig = final.zigpkgs.master-2022-09-13;
+
   # zig we want to be the latest nightly since 0.9.0 is not released yet.
-  zig = final.zigpkgs.master;
+  #zig = final.zigpkgs.master;
 
   # last known working stage1 build, the rest in the future are stage3
   #zig = final.zigpkgs.master-2022-08-19;

pkg/fontconfig/build.zig

@@ -142,6 +142,10 @@ pub fn buildFontconfig(
 
         "-DFC_GPERF_SIZE_T=size_t",
 
+        // Default errors that fontconfig can't handle
+        "-Wno-implicit-function-declaration",
+        "-Wno-int-conversion",
+
         // https://gitlab.freedesktop.org/fontconfig/fontconfig/-/merge_requests/231
         "-fno-sanitize=undefined",
         "-fno-sanitize-trap=undefined",

src/Window.zig

@@ -979,8 +979,6 @@ fn mouseButtonCallback(
     glfw_action: glfw.Action,
     mods: glfw.Mods,
 ) void {
-    _ = mods;
-
     const tracy = trace(@src());
     defer tracy.end();
 

vendor/mach

@@ -1 +1 @@
-Subproject commit 0d5b85344376ac22440680c696fc42b2e3614972
+Subproject commit e03ff5aeba9f4120fa9024461e929d2445e46843

vendor/zig-libxml2

@@ -1 +1 @@
-Subproject commit 559e909eeda65508b0a3b7c1c5107f6621fe8218
+Subproject commit 47fc435b1b5885345693a09b19f2fdcfb91082d8