patch some CMake variables; always use ninja

recipes/torchtext/meta.yaml

@@ -11,6 +11,8 @@ source:
   patches:
     # don't build pytorch/text/tree/main/third_party; pull in from conda-forge
     - patches/0001-do-not-build-third_party-libs.patch
+    # make sure we install from and into $PREFIX
+    - patches/0002-fix-some-CMake-arguments-for-our-infrastructure.patch
 
 build:
   number: 0

recipes/torchtext/patches/0001-do-not-build-third_party-libs.patch

@@ -1,7 +1,7 @@
 From b530b275f1af85d2ae8da140e58796aa506186f8 Mon Sep 17 00:00:00 2001
 From: "H. Vetinari" <[email protected]>
 Date: Wed, 1 Dec 2021 21:07:42 +1100
-Subject: [PATCH] do not build third_party libs
+Subject: [PATCH 1/2] do not build third_party libs
 
 ---
  CMakeLists.txt | 5 ++++-

recipes/torchtext/patches/0002-fix-some-CMake-arguments-for-our-infrastructure.patch

@@ -0,0 +1,43 @@
+From b9711d40d1a4b3a6d152d11ca925c949a413c53a Mon Sep 17 00:00:00 2001
+From: "H. Vetinari" <[email protected]>
+Date: Wed, 18 Jan 2023 16:56:57 +1100
+Subject: [PATCH 2/2] fix some CMake arguments for our infrastructure
+
+---
+ tools/setup_helpers/extension.py | 10 ++++------
+ 1 file changed, 4 insertions(+), 6 deletions(-)
+
+diff --git a/tools/setup_helpers/extension.py b/tools/setup_helpers/extension.py
+index 760b3bb7..fdf64f94 100644
+--- a/tools/setup_helpers/extension.py
++++ b/tools/setup_helpers/extension.py
+@@ -64,12 +64,13 @@ class CMakeBuild(build_ext):
+         cfg = "Debug" if self.debug else "Release"
+
+         cmake_args = [
++            "-GNinja",
+             f"-DCMAKE_BUILD_TYPE={cfg}",
+-            f"-DCMAKE_PREFIX_PATH={torch.utils.cmake_prefix_path}",
+-            f"-DCMAKE_INSTALL_PREFIX={extdir}",
++            f"-DCMAKE_PREFIX_PATH={os.environ['PREFIX']}",
++            f"-DCMAKE_INSTALL_PREFIX=lib",
+             "-DCMAKE_VERBOSE_MAKEFILE=ON",
+             f"-DPython_INCLUDE_DIR={distutils.sysconfig.get_python_inc()}",
+-            f"-DTORCH_INSTALL_PREFIX:STRING={os.path.dirname(torch.__file__)}",
++            f"-DTORCH_INSTALL_PREFIX:STRING={os.environ['PREFIX']}",
+             "-DBUILD_TORCHTEXT_PYTHON_EXTENSION:BOOL=ON",
+             "-DRE2_BUILD_TESTING:BOOL=OFF",
+             "-DBUILD_TESTING:BOOL=OFF",
+@@ -80,9 +81,6 @@ class CMakeBuild(build_ext):
+         ]
+         build_args = ["--target", "install"]
+
+-        # Default to Ninja
+-        if "CMAKE_GENERATOR" not in os.environ or platform.system() == "Windows":
+-            cmake_args += ["-GNinja"]
+         if platform.system() == "Windows":
+             import sys
+
+-- 
+2.38.1.windows.1
+