Stub slang module

setup.py

@@ -630,6 +630,21 @@ def init_env(
     return ans
 
 
+def slang_env(args: Options) -> Env:
+    ans = env.copy()
+    cflags = []
+    for x in ans.cflags:
+        if x == '-Wstrict-prototypes':
+            continue
+        if x.startswith('-std='):
+            x = '-std=c++20'
+        cflags.append(x)
+    pylib = get_python_flags(args, cflags)
+    ans.cflags = cflags
+    ans.ldflags = pylib + ans.ldflags
+    return ans
+
+
 def kitty_env(args: Options) -> Env:
     ans = env.copy()
     cflags = ans.cflags
@@ -1216,6 +1231,10 @@ def build(args: Options, native_optimizations: bool = True, call_init: bool = Tr
         kitty_env(args), 'kitty/fast_data_types', args.compilation_database, sources, headers,
         build_dsym=args.build_dsym,
     )
+    sources, headers = ['shaders/compiler.cpp'], []
+    compile_c_extension(
+        slang_env(args), 'kitty/slangc', args.compilation_database, sources, headers, build_dsym=args.build_dsym
+    )
     compile_glfw(args.compilation_database, args.build_dsym)
     compile_kittens(args)
     add_builtin_fonts(args)

shaders/compiler.cpp

@@ -0,0 +1,30 @@
+/*
+ * compiler.cpp
+ * Copyright (C) 2026 Kovid Goyal <kovid at kovidgoyal.net>
+ *
+ * Distributed under terms of the GPL3 license.
+ */
+
+#include <Python.h>
+
+
+static char doc[] = "Compile shaders";
+static PyMethodDef methods[] = {
+    {NULL}  /* Sentinel */
+};
+
+static int
+exec_module(PyObject *mod) { (void)mod; return 0; }
+
+static PyModuleDef_Slot slots[] = { {Py_mod_exec, (void*)exec_module}, {0, NULL} };
+
+static struct PyModuleDef module_def = {PyModuleDef_HEAD_INIT};
+
+PyObject*
+PyInit_slangc(void) {
+	module_def.m_name = "slangc";
+	module_def.m_slots = slots;
+	module_def.m_doc = doc;
+	module_def.m_methods = methods;
+	return PyModuleDef_Init(&module_def);
+}