diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index d59f8e1ec..d66239a16 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -110,7 +110,7 @@ jobs:
             MACOSX_DEPLOYMENT_TARGET=11
             makeFlags='BOOST_PYTHON_LIB=./boost/pfx/lib/libboost_python*.a CONFIG=clang'
           CIBW_BEFORE_BUILD: bash ./.github/workflows/wheels/cibw_before_build.sh
-          CIBW_TEST_COMMAND: python3 -c "from pyosys import libyosys as ys;d=ys.Design();ys.run_pass('help', d)"
+          CIBW_TEST_COMMAND: python3 {project}/tests/arch/ecp5/add_sub.py
       - uses: actions/upload-artifact@v4
         with:
           name: python-wheels-${{ matrix.os.runner }}
diff --git a/Makefile b/Makefile
index f81e1fea2..0be664b9a 100644
--- a/Makefile
+++ b/Makefile
@@ -737,6 +737,12 @@ compile-only: $(OBJS) $(GENFILES) $(EXTRA_TARGETS)
 	@echo "  Compile successful."
 	@echo ""
 
+.PHONY: share
+share: $(EXTRA_TARGETS)
+	@echo ""
+	@echo "  Share directory created."
+	@echo ""
+
 $(PROGRAM_PREFIX)yosys$(EXE): $(OBJS)
 	$(P) $(CXX) -o $(PROGRAM_PREFIX)yosys$(EXE) $(EXE_LINKFLAGS) $(LINKFLAGS) $(OBJS) $(LIBS) $(LIBS_VERIFIC)
 
diff --git a/kernel/yosys.cc b/kernel/yosys.cc
index 510151479..374b07d06 100644
--- a/kernel/yosys.cc
+++ b/kernel/yosys.cc
@@ -554,17 +554,17 @@ void yosys_setup()
 #include "kernel/constids.inc"
 #undef X
 
-	#ifdef WITH_PYTHON
-		// With Python 3.12, calling PyImport_AppendInittab on an already
-		// initialized platform fails (such as when libyosys is imported
-		// from a Python interpreter)
-		if (!Py_IsInitialized()) {
-			PyImport_AppendInittab((char*)"libyosys", INIT_MODULE);
-			Py_Initialize();
-			PyRun_SimpleString("import sys");
-			signal(SIGINT, SIG_DFL);
-		}
-	#endif
+#ifdef WITH_PYTHON
+	// With Python 3.12, calling PyImport_AppendInittab on an already
+	// initialized platform fails (such as when libyosys is imported
+	// from a Python interpreter)
+	if (!Py_IsInitialized()) {
+		PyImport_AppendInittab((char*)"libyosys", INIT_MODULE);
+		Py_Initialize();
+		PyRun_SimpleString("import sys");
+		signal(SIGINT, SIG_DFL);
+	}
+#endif
 
 	Pass::init_register();
 	yosys_design = new RTLIL::Design;
@@ -1013,6 +1013,16 @@ void init_share_dirname()
 #else
 void init_share_dirname()
 {
+#  ifdef WITH_PYTHON
+	PyObject *sys_obj = PyImport_ImportModule("sys");
+
+	if (PyObject_HasAttrString(sys_obj, "_pyosys_share_dirname")) {
+		PyObject *share_path_obj = PyObject_GetAttrString(sys_obj, "_pyosys_share_dirname");
+		const char *share_path = PyUnicode_AsUTF8(share_path_obj);
+		yosys_share_dirname = std::string(share_path);
+		return;
+	}
+#  endif
 	std::string proc_self_path = proc_self_dirname();
 #  if defined(_WIN32) && !defined(YOSYS_WIN32_UNIX_DIR)
 	std::string proc_share_path = proc_self_path + "share\\";
@@ -1058,12 +1068,20 @@ void init_abc_executable_name()
 	}
 #else
 	yosys_abc_executable = proc_self_dirname() + proc_program_prefix()+ "yosys-abc";
-#endif
-#ifdef _WIN32
-#ifndef ABCEXTERNAL
+#  ifdef _WIN32
 	if (!check_file_exists(yosys_abc_executable + ".exe") && check_file_exists(proc_self_dirname() + "..\\" + proc_program_prefix() + "yosys-abc.exe"))
 		yosys_abc_executable = proc_self_dirname() + "..\\" + proc_program_prefix() + "yosys-abc";
-#endif
+#  endif
+
+#  ifdef WITH_PYTHON
+	PyObject *sys_obj = PyImport_ImportModule("sys");
+
+	if (PyObject_HasAttrString(sys_obj, "_pyosys_abc")) {
+		PyObject *abc_path_obj = PyObject_GetAttrString(sys_obj, "_pyosys_abc");
+		const char *abc_path = PyUnicode_AsUTF8(abc_path_obj);
+		yosys_abc_executable = std::string(abc_path);
+	}
+#  endif
 #endif
 }
 
@@ -1132,7 +1150,7 @@ bool run_frontend(std::string filename, std::string command, RTLIL::Design *desi
 
 	if (command == "auto") {
 	  std::string filename_trim = filename;
-	  
+
 	  auto has_extension = [](const std::string& filename, const std::string& extension) {
 	    if (filename.size() >= extension.size()) {
 	      return filename.compare(filename.size() - extension.size(), extension.size(), extension) == 0;
@@ -1143,7 +1161,7 @@ bool run_frontend(std::string filename, std::string command, RTLIL::Design *desi
 	  if (has_extension(filename_trim, ".gz")) {
 	    filename_trim.erase(filename_trim.size() - 3);
 	  }
-	  
+
 	  if (has_extension(filename_trim, ".v")) {
 	    command = " -vlog2k";
 	  } else if (has_extension(filename_trim, ".sv")) {
diff --git a/misc/__init__.py b/misc/__init__.py
index 330fd6d86..d74e3f5bd 100644
--- a/misc/__init__.py
+++ b/misc/__init__.py
@@ -1,5 +1,19 @@
 import os
 import sys
+
 sys.setdlopenflags(os.RTLD_NOW | os.RTLD_GLOBAL)
 
+__dir__ = os.path.abspath(os.path.dirname(__file__))
+sys._pyosys_dir = os.path.abspath(__dir__)
+
+bin_ext = ".exe" if os.name == "nt" else ""
+
+_share_candidate = os.path.join(__dir__, "share")
+if os.path.isdir(_share_candidate):
+    sys._pyosys_share_dirname = _share_candidate + os.path.sep
+
+_abc_candidate = os.path.join(__dir__, f"yosys-abc{bin_ext}")
+if os.path.isfile(_abc_candidate):
+    sys._pyosys_abc = _abc_candidate
+
 __all__ = ["libyosys"]
diff --git a/setup.py b/setup.py
index 221965971..b3a6a9280 100644
--- a/setup.py
+++ b/setup.py
@@ -44,26 +44,50 @@ class libyosys_so_ext(Extension):
             "ENABLE_PYTHON_CONFIG_EMBED=0",
             # Would need to be installed separately by the user
             "ENABLE_TCL=0",
-            # Would need to be installed separately by the user
             "ENABLE_READLINE=0",
+            "ENABLE_EDITLINE=0",
+            # Always compile and include ABC in wheel
+            "ABCEXTERNAL=",
             # Show compile commands
             "PRETTY=0",
         ]
 
     def custom_build(self, bext: build_ext):
         bext.spawn(
-            ["make", f"-j{os.cpu_count() or 1}", self.name]
+            [
+                "make",
+                f"-j{os.cpu_count() or 1}",
+                self.name,
+                "yosys-abc",
+                "share",
+            ]
             + shlex.split(os.getenv("makeFlags", ""))
             + self.args
         )
         build_path = os.path.dirname(os.path.dirname(bext.get_ext_fullpath(self.name)))
         pyosys_path = os.path.join(build_path, "pyosys")
-        target = os.path.join(pyosys_path, os.path.basename(self.name))
         os.makedirs(pyosys_path, exist_ok=True)
-        shutil.copyfile(self.name, target)
+
+        # libyosys.so
+        target = os.path.join(pyosys_path, os.path.basename(self.name))
+        shutil.copy(self.name, target)
+        bext.spawn(["strip", "-S", target])
+
+        # yosys-abc
+        yosys_abc_target = os.path.join(pyosys_path, "yosys-abc")
+        shutil.copy("yosys-abc", yosys_abc_target)
+        bext.spawn(["strip", "-S", "yosys-abc"])
+
+        # share directory
+        share_target = os.path.join(pyosys_path, "share")
+        try:
+            shutil.rmtree(share_target)
+        except FileNotFoundError:
+            pass
+
+        shutil.copytree("share", share_target)
 
         # I don't know how debug info is getting here.
-        bext.spawn(["strip", "-S", target])
 
 
 class custom_build_ext(build_ext):
diff --git a/tests/arch/ecp5/add_sub.py b/tests/arch/ecp5/add_sub.py
new file mode 100644
index 000000000..0232ac1db
--- /dev/null
+++ b/tests/arch/ecp5/add_sub.py
@@ -0,0 +1,20 @@
+import os
+from pyosys import libyosys as ys
+
+__dir__ = os.path.dirname(os.path.abspath(__file__))
+add_sub = os.path.join(__dir__, "..", "common", "add_sub.v")
+
+base = ys.Design()
+ys.run_pass(f"read_verilog {add_sub}", base)
+ys.run_pass("hierarchy -top top", base)
+ys.run_pass("proc", base)
+ys.run_pass("equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5", base)
+
+postopt = ys.Design()
+ys.run_pass("design -load postopt", postopt)
+ys.run_pass("cd top", postopt)
+ys.run_pass("select -assert-min 25 t:LUT4", postopt)
+ys.run_pass("select -assert-max 26 t:LUT4", postopt)
+ys.run_pass("select -assert-count 10 t:PFUMX", postopt)
+ys.run_pass("select -assert-count 6 t:L6MUX21", postopt)
+ys.run_pass("select -assert-none t:LUT4 t:PFUMX t:L6MUX21 %% t:* %D", postopt)