From ccde57bd8ae6fe85356c76f571a11febb9d45e7f Mon Sep 17 00:00:00 2001
From: Jiajie Chen <c@jia.je>
Date: Sat, 25 Jun 2022 10:24:17 +0800
Subject: [PATCH] python310Packages.cocotb: unbreak on Darwin

- Disable lto, see issue #19098

- Replace `-bundle` in LDCXXSHARED env
---
 ...SHARED-for-macOS-along-with-LDSHARED.patch | 26 +++++++++++++++++++
 .../python-modules/cocotb/default.nix         | 10 ++++++-
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 pkgs/development/python-modules/cocotb/0001-Patch-LDCXXSHARED-for-macOS-along-with-LDSHARED.patch

diff --git a/pkgs/development/python-modules/cocotb/0001-Patch-LDCXXSHARED-for-macOS-along-with-LDSHARED.patch b/pkgs/development/python-modules/cocotb/0001-Patch-LDCXXSHARED-for-macOS-along-with-LDSHARED.patch
new file mode 100644
index 00000000000..38ca864add3
--- /dev/null
+++ b/pkgs/development/python-modules/cocotb/0001-Patch-LDCXXSHARED-for-macOS-along-with-LDSHARED.patch
@@ -0,0 +1,26 @@
+From 94c4768cd69b026e498d92133dd6c7d8589cf911 Mon Sep 17 00:00:00 2001
+From: Jiajie Chen <c@jia.je>
+Date: Sat, 25 Jun 2022 10:19:44 +0800
+Subject: [PATCH] Patch LDCXXSHARED for macOS along with LDSHARED
+
+In Nixpkgs, we patched distutils to respect LDCXXSHARED environment, so
+the replacement should be taken on LDCXXSHARED as well.
+---
+ cocotb_build_libs.py | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/cocotb_build_libs.py b/cocotb_build_libs.py
+index 66097ec2..d5555b36 100755
+--- a/cocotb_build_libs.py
++++ b/cocotb_build_libs.py
+@@ -583,6 +583,7 @@ def get_ext():
+ 
+     if sys.platform == "darwin":
+         cfg_vars["LDSHARED"] = cfg_vars["LDSHARED"].replace("-bundle", "-dynamiclib")
++        cfg_vars["LDCXXSHARED"] = cfg_vars["LDCXXSHARED"].replace("-bundle", "-dynamiclib")
+ 
+     share_lib_dir = os.path.relpath(os.path.join(cocotb_share_dir, "lib"))
+     include_dir = os.path.relpath(os.path.join(cocotb_share_dir, "include"))
+-- 
+2.36.1
+
diff --git a/pkgs/development/python-modules/cocotb/default.nix b/pkgs/development/python-modules/cocotb/default.nix
index d24d3bc7982..83ed76ac866 100644
--- a/pkgs/development/python-modules/cocotb/default.nix
+++ b/pkgs/development/python-modules/cocotb/default.nix
@@ -40,8 +40,17 @@ buildPythonPackage rec {
 
     # remove circular dependency cocotb-bus from setup.py
     substituteInPlace setup.py --replace "'cocotb-bus<1.0'" ""
+  '' + lib.optionalString stdenv.isDarwin ''
+    # disable lto on darwin
+    # https://github.com/NixOS/nixpkgs/issues/19098
+    substituteInPlace cocotb_build_libs.py --replace "-flto" ""
   '';
 
+  patches = [
+    # Fix "can't link with bundle (MH_BUNDLE) only dylibs (MH_DYLIB) file" error
+    ./0001-Patch-LDCXXSHARED-for-macOS-along-with-LDSHARED.patch
+  ];
+
   checkInputs = [ cocotb-bus pytestCheckHook swig verilog ];
 
   checkPhase = ''
@@ -53,6 +62,5 @@ buildPythonPackage rec {
     homepage = "https://github.com/cocotb/cocotb";
     license = licenses.bsd3;
     maintainers = with maintainers; [ matthuszagh ];
-    broken = stdenv.isDarwin;
   };
 }