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From db3b3fc2241005329e02a549ada1a0f099bf070a Mon Sep 17 00:00:00 2001
From: Xiretza <xiretza@xiretza.xyz>
Date: Sat, 11 Jun 2022 17:50:59 +0200
Subject: [PATCH 3/9] fix(setup.py): compute install directory before outside
 build_extension

This fixes builds with `setup.py develop`/`pip install -e`.

build_ext.run() unsets build_ext.inplace before running
build_extension(), and only restores it before calling
copy_extensions_to_source(). Because the cmake extension has to know the
real install directory in build_extension(), we need to compute it
before calling build_ext.run() and then retrieve it in build_extension().

Signed-off-by: Xiretza <xiretza@xiretza.xyz>
---
 setup.py | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/setup.py b/setup.py
index 0a1b5a3..3c783ae 100644
--- a/setup.py
+++ b/setup.py
@@ -108,6 +108,19 @@ class AntlrCMakeBuild(build_ext):
     def run(self):
         shared_options.load(self)
         try:
+            # We need to compute the install directory here, because
+            # build_ext.run() unsets build_ext.inplace while running
+            # build_extension(). This means that files would be installed
+            # to the wrong location (to the temporary build directory)
+            # for `setup.py develop`/`pip install -e` builds.
+            self.install_dirs = {}
+            for ext in self.extensions:
+                if isinstance(ext, CMakeExtension):
+                    self.install_dirs[ext] = os.path.join(
+                        os.path.abspath(
+                            os.path.dirname(self.get_ext_fullpath(ext.name))),
+                        ext.prefix)
+
             super().run()
 
             try:
@@ -163,10 +176,7 @@ class AntlrCMakeBuild(build_ext):
 
     def build_extension(self, ext):
         if isinstance(ext, CMakeExtension):
-            extdir = os.path.join(
-                os.path.abspath(
-                    os.path.dirname(self.get_ext_fullpath(ext.name))),
-                ext.prefix)
+            extdir = self.install_dirs[ext]
             cmake_args = [
                 '-DCMAKE_INSTALL_PREFIX=' + extdir, '-DCMAKE_INSTALL_LIBDIR=.',
                 '-DPYTHON_EXECUTABLE=' + sys.executable,
-- 
2.36.1