Fix nix build with zig deps

Signed-off-by: emneo <emneo@kreog.com>

build.zig.zon.nix

@@ -0,0 +1,28 @@
+# generated by a zon2nix fork (https://github.com/emneo-dev/zon2nix)
+{
+  linkFarm,
+  fetchzip,
+}:
+linkFarm "zig-packages" [
+  {
+    name = "1220232ab38d0c2cfb10680115c17ad2fa1a8531dbaf8bbfb359ec67e80c7d5f5758";
+    path = fetchzip {
+      url = "https://github.com/karlseguin/metrics.zig/archive/8892dce43b46a69c8e736329629f38df232adee1.tar.gz";
+      hash = "sha256-JN+s2VI6zKotfJ4sDbGrjSBz3JAVrcZk3npkXUNOMho=";
+    };
+  }
+  {
+    name = "1220b0979ea9891fa4aeb85748fc42bc4b24039d9c99a4d65d893fb1c83e921efad8";
+    path = fetchzip {
+      url = "https://github.com/ziglibs/ini/archive/e18d36665905c1e7ba0c1ce3e8780076b33e3002.tar.gz";
+      hash = "sha256-PmhXsK+mTmOrRC4u8cs9ol2XwKZv0HVRXpntaR5CJiw=";
+    };
+  }
+  {
+    name = "1220c032d828e768348b321a79523812be1c4cb27e1eb7ff5df54b573fa131afd448";
+    path = fetchzip {
+      url = "https://github.com/karlseguin/log.zig/archive/97d0818270a357d3ce7bc878abc32dc996fe78ff.tar.gz";
+      hash = "sha256-ahqqywOKsSlucCPmmqaZjrayNgUXoQV3w4VazsKgkyI=";
+    };
+  }
+]

flake.nix

@@ -65,21 +65,11 @@
 
           src = pkgs.lib.cleanSource ./.;
           buildInputs = [
-            zig
+            zig.hook
           ];
 
-          buildPhase = ''
-            zig build -Doptimize=ReleaseSafe
-          '';
-
-          doCheck = true;
-          checkPhase = ''
-            zig build test -Doptimize=ReleaseSafe
-          '';
-
-          installPhase = ''
-            zig build install --prefix $out -Doptimize=ReleaseSafe
-            rm -rf $out/zig # remove cache
+          postPatch = ''
+            ln -s ${pkgs.callPackage ./build.zig.zon.nix {}} $ZIG_GLOBAL_CACHE_DIR/p
           '';
         };
       };