python3Packages.meson-python: replace darwin workaround with upstream patch

Benefit is that this will break on the version bump and we'll remember to
remove it.

pkgs/development/python-modules/meson-python/default.nix

@@ -1,8 +1,8 @@
 {
   lib,
-  stdenv,
   buildPythonPackage,
   fetchPypi,
+  fetchpatch,
   pythonOlder,
 
   # build-system, dependencies
@@ -29,6 +29,14 @@ buildPythonPackage rec {
     hash = "sha256-xWqZ7J32aaQGYv5GlgMhr25LFBBsFNsihwnBYo4jhI0=";
   };
 
+  patches = [
+    (fetchpatch {
+      # TODO: Remove in 0.19.0
+      url = "https://github.com/mesonbuild/meson-python/commit/1e69e7a23f2b24d688dc4220e93de6f0e2bcf9d2.patch";
+      hash = "sha256-FC2ll/OrLV1R0CDB6UkrknVASJQ7rSU+sApdAk75x44=";
+    })
+  ];
+
   build-system = [
     meson
     ninja
@@ -48,17 +56,6 @@ buildPythonPackage rec {
     pytest-mock
   ];
 
-  # meson-python respectes MACOSX_DEPLOYMENT_TARGET, but compares it with the
-  # actual platform version during tests, which mismatches.
-  # https://github.com/mesonbuild/meson-python/issues/760
-  preCheck =
-    if stdenv.hostPlatform.isDarwin then
-      ''
-        unset MACOSX_DEPLOYMENT_TARGET
-      ''
-    else
-      null;
-
   setupHooks = [ ./add-build-flags.sh ];
 
   meta = {