From d21b02c2eb0190322dbda6a9a07eed4d6f37530e Mon Sep 17 00:00:00 2001
From: Atila Neves <atila.neves@gmail.com>
Date: Tue, 22 Sep 2020 12:11:46 +0200
Subject: [PATCH] Remove support for Python2

---
 pynih/source/autowrap/pynih/wrap.d | 32 +++---------------------------
 pynih/source/python/boilerplate.d  |  1 -
 pynih/source/python/cooked.d       | 20 ++++---------------
 3 files changed, 7 insertions(+), 46 deletions(-)

diff --git a/pynih/source/autowrap/pynih/wrap.d b/pynih/source/autowrap/pynih/wrap.d
index 132886f6..7ff3035b 100644
--- a/pynih/source/autowrap/pynih/wrap.d
+++ b/pynih/source/autowrap/pynih/wrap.d
@@ -8,7 +8,6 @@ public import std.typecons: Yes, No;
 public import autowrap.types: Modules, Module, isModule,
     LibraryName, PreModuleInitCode, PostModuleInitCode, RootNamespace, Ignore;
 static import python.boilerplate;
-import python.raw: isPython2, isPython3;
 import std.meta: allSatisfy;
 
 
@@ -67,17 +66,9 @@ string createPythonModuleMixin(LibraryName libraryName, Modules modules)
 
 
 private string pyInitFuncName(LibraryName libraryName) @safe pure nothrow {
-
-    string prefix() {
-        static if(isPython2)
-            return "init";
-        else static if(isPython3)
-            return "PyInit_";
-        else
-            static assert(false);
-    }
-
-    return prefix ~ libraryName.value;
+    import python.raw: isPython3;
+    static assert(isPython3, "Python2 no longer supported");
+    return "PyInit_" ~ libraryName.value;
 }
 
 
@@ -144,7 +135,6 @@ auto createPythonModule(LibraryName libraryName, modules...)()
 
 
 mixin template createPythonModule(python.boilerplate.Module module_, alias cfunctions, alias aggregates)
-    if(isPython3)
 {
     static extern(C) export auto _py_init_impl() {  // -> ModuleInitRet
         import python.raw: pyDateTimeImport;
@@ -157,19 +147,3 @@ mixin template createPythonModule(python.boilerplate.Module module_, alias cfunc
         return createModule!(module_, cfunctions, aggregates);
     }
 }
-
-
-mixin template createPythonModule(python.boilerplate.Module module_, alias cfunctions, alias aggregates)
-    if(isPython2)
-{
-    static extern(C) export void _py_init_impl() {
-        import python.raw: pyDateTimeImport;
-        import python.cooked: initModule;
-        import core.runtime: rt_init;
-
-        rt_init;
-
-        pyDateTimeImport;
-        initModule!(module_, cfunctions, aggregates);
-    }
-}
diff --git a/pynih/source/python/boilerplate.d b/pynih/source/python/boilerplate.d
index 202d8573..a4f530d0 100644
--- a/pynih/source/python/boilerplate.d
+++ b/pynih/source/python/boilerplate.d
@@ -1,7 +1,6 @@
 module python.boilerplate;
 
 
-import python.raw: isPython2, isPython3;
 import std.traits: isFunction;
 
 
diff --git a/pynih/source/python/cooked.d b/pynih/source/python/cooked.d
index 0811ebb7..84f9decd 100644
--- a/pynih/source/python/cooked.d
+++ b/pynih/source/python/cooked.d
@@ -13,10 +13,11 @@ import python.boilerplate: Module, CFunctions, Aggregates;
    Each function has the same name in Python.
  */
 auto createModule(Module module_, alias cfunctions, alias aggregates = Aggregates!())()
-    if(isPython3 &&
-       is(cfunctions == CFunctions!F, F...) &&
+    if(is(cfunctions == CFunctions!F, F...) &&
        is(aggregates == Aggregates!T, T...))
 {
+    static assert(isPython3, "Python2 no longer supported");
+
     static PyModuleDef moduleDef;
 
     auto pyMethodDefs = cFunctionsToPyMethodDefs!(cfunctions);
@@ -29,19 +30,6 @@ auto createModule(Module module_, alias cfunctions, alias aggregates = Aggregate
 }
 
 
-/**
-   Calls Py_InitModule. It's the Python2 way of creating a new Python module.
-   Each function has the same name in Python.
- */
-void initModule(Module module_, alias cfunctions, alias aggregates)()
-    if(isPython2 &&
-       is(cfunctions == CFunctions!F, F...) &&
-       is(aggregates == Aggregates!T, T...))
-{
-    auto module_ = pyInitModule(&module_.name[0], cFunctionsToPyMethodDefs!(cfunctions));
-    addModuleTypes!aggregates(module_);
-}
-
 private void addModuleTypes(alias aggregates)(PyObject* module_) {
     import autowrap.common: AlwaysTry;
     import python.type: PythonType;
@@ -85,7 +73,7 @@ private PyMethodDef* cFunctionsToPyMethodDefs(alias cfunctions)()
    Helper function to get around the C syntax problem with
    PyModuleDef_HEAD_INIT - it doesn't compile in D.
 */
-private auto pyModuleDef(A...)(auto ref A args) if(isPython3) {
+private auto pyModuleDef(A...)(auto ref A args) {
     import std.functional: forward;
 
     return PyModuleDef(