From cfe9a1ed59a7ae85a0befbb1e40e88df855c310f Mon Sep 17 00:00:00 2001
From: Jerome Duval <jerome.duval@gmail.com>
Date: Tue, 14 Dec 2021 17:34:48 +0100
Subject: Distutils patch for Haiku


diff --git a/setuptools/_distutils/command/install.py b/setuptools/_distutils/command/install.py
index a7ac4e6..8e49005 100644
--- a/setuptools/_distutils/command/install.py
+++ b/setuptools/_distutils/command/install.py
@@ -50,6 +50,27 @@ INSTALL_SCHEMES = {
         'data': '{base}',
     },
     'nt': WINDOWS_SCHEME,
+    'haiku': {
+        'purelib': '$base/non-packaged/lib/python$py_version_short/site-packages',
+        'platlib': '$platbase/non-packaged/lib/python$py_version_short/site-packages',
+        'headers': '$base/non-packaged/develop/headers/python$py_version_short/$dist_name',
+        'scripts': '$base/non-packaged/bin',
+        'data'   : '$base/non-packaged',
+        },
+    'haiku_vendor': {
+        'purelib': '$base/lib/python$py_version_short/vendor-packages',
+        'platlib': '$platbase/lib/python$py_version_short/vendor-packages',
+        'headers': '$base/develop/headers/python$py_version_short/$dist_name',
+        'scripts': '$base/bin',
+        'data'   : '$base',
+        },
+    'haiku_home': {
+        'purelib': '$base/lib/python',
+        'platlib': '$base/lib/python',
+        'headers': '$base/develop/headers/python/$dist_name',
+        'scripts': '$base/bin',
+        'data'   : '$base',
+        },
     'pypy': {
         'purelib': '{base}/site-packages',
         'platlib': '{base}/site-packages',
@@ -86,7 +107,13 @@ if HAS_USER_SITE:
         'data': '{userbase}',
     }
 
-
+    INSTALL_SCHEMES['haiku_user'] = {
+        'purelib': '$usersite',
+        'platlib': '$usersite',
+        'headers': '$userbase/develop/headers/python$py_version_short/$dist_name',
+        'scripts': '$userbase/bin',
+        'data'   : '$userbase',
+        }
 INSTALL_SCHEMES.update(fw.schemes)
 
 
@@ -554,10 +581,16 @@ class install(Command):
             if self.install_userbase is None:
                 raise DistutilsPlatformError("User base directory is not specified")
             self.install_base = self.install_platbase = self.install_userbase
-            self.select_scheme("posix_user")
+            if sys.platform.startswith('haiku'):
+                self.select_scheme("haiku_user")
+            else:
+                self.select_scheme("posix_user")
         elif self.home is not None:
             self.install_base = self.install_platbase = self.home
-            self.select_scheme("posix_home")
+            if sys.platform.startswith('haiku'):
+                self.select_scheme("haiku_home")
+            else:
+                self.select_scheme("posix_home")
         else:
             if self.prefix is None:
                 if self.exec_prefix is not None:
@@ -577,7 +610,13 @@ class install(Command):
 
             self.install_base = self.prefix
             self.install_platbase = self.exec_prefix
-            self.select_scheme("posix_prefix")
+            if sys.platform.startswith('haiku'):
+                if os.environ.get('HAIKU_USE_VENDOR_DIRECTORIES') == '1':
+                    self.select_scheme("haiku_vendor")
+                else:
+                    self.select_scheme("haiku")
+            else:
+                self.select_scheme("posix_prefix")
 
     def finalize_other(self):
         """Finalizes options for non-posix platforms"""
diff --git a/setuptools/_distutils/sysconfig.py b/setuptools/_distutils/sysconfig.py
index a40a723..9bfa334 100644
--- a/setuptools/_distutils/sysconfig.py
+++ b/setuptools/_distutils/sysconfig.py
@@ -190,7 +190,8 @@ def _get_python_inc_from_config(plat_specific, spec_prefix):
 def _get_python_inc_posix_prefix(prefix):
     implementation = 'pypy' if IS_PYPY else 'python'
     python_dir = implementation + get_python_version() + build_flags
-    return os.path.join(prefix, "include", python_dir)
+    inc_dir = "include" if sys.platform != "haiku1" else "develop/headers"
+    return os.path.join(prefix, inc_dir, python_dir)
 
 
 def _get_python_inc_nt(prefix, spec_prefix, plat_specific):
@@ -244,7 +245,14 @@ def get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
         else:
             prefix = plat_specific and EXEC_PREFIX or PREFIX
 
-    if os.name == "posix":
+    if os.name == "posix" and sys.platform.startswith('haiku'):
+        if standard_lib:
+            return os.path.join(prefix,
+                                "lib", "python" + get_python_version())
+        return os.path.join(prefix, "non-packaged",
+                            "lib", "python" + get_python_version(),
+                            "site-packages")
+    elif os.name == "posix":
         if plat_specific or standard_lib:
             # Platform-specific modules (any module from a non-pure-Python
             # module distribution) or standard Python library modules.
-- 
2.37.3