python3-ninja: simplify recipe

diff --git a/meta-python/recipes-devtools/python/python3-ninja/no-scikit-build.patch b/meta-python/recipes-devtools/python/python3-ninja/no-scikit-build.patch
new file mode 100644
index 0000000000..276fb50172
--- /dev/null
+++ b/meta-python/recipes-devtools/python/python3-ninja/no-scikit-build.patch
@@ -0,0 +1,31 @@ 
+We don't need to build ninja so there's no need to use scikit-build,
+as we just need the python module with it's one ninja() function.
+
+Upstream-Status: Inappropriate
+Signed-off-by: Ross Burton <ross.burton@arm.com>
+
+diff --git a/pyproject.toml b/pyproject.toml
+index b895c20..577b642 100644
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -1,7 +1,6 @@
+ [build-system]
+ requires = [
+     "setuptools>=42",
+-    "scikit-build>=0.12",
+ ]
+ build-backend = "setuptools.build_meta"
+ 
+diff --git a/setup.py b/setup.py
+index dbe1fbc..3259754 100755
+--- a/setup.py
++++ b/setup.py
+@@ -5,7 +5,7 @@ import os
+ import sys
+ from distutils.text_file import TextFile
+ 
+-from skbuild import setup
++from setuptools import setup
+ 
+ # Add current folder to path
+ # This is required to import versioneer in an isolated pip build
diff --git a/meta-python/recipes-devtools/python/python3-ninja/run-ninja-from-path.patch b/meta-python/recipes-devtools/python/python3-ninja/run-ninja-from-path.patch
index 26bd037373..0068efcc3a 100644
--- a/meta-python/recipes-devtools/python/python3-ninja/run-ninja-from-path.patch
+++ b/meta-python/recipes-devtools/python/python3-ninja/run-ninja-from-path.patch
@@ -1,7 +1,40 @@ 
---- ninja-1.11.1/src/ninja/__init__.py.old	2022-11-05 09:49:23.000000000 +0100
-+++ ninja-1.11.1/src/ninja/__init__.py	2023-03-10 09:45:13.452082888 +0100
-@@ -44,7 +44,7 @@
+There's no need to hunt around source or install trees when we're just running ninja
+from PATH.
+
+Upstream-Status: Inappropriate
+Signed-off-by: Ross Burton <ross.burton@arm.com>
+
+diff --git a/src/ninja/__init__.py b/src/ninja/__init__.py
+index f83767e..31bb926 100644
+--- a/src/ninja/__init__.py
++++ b/src/ninja/__init__.py
+@@ -19,32 +19,9 @@ except ImportError:
+             os.path.dirname(__file__), '../../Ninja-src/misc')))
+     from ninja_syntax import Writer, escape, expand  # noqa: F401
  
+-DATA = os.path.join(os.path.dirname(__file__), 'data')
+-
+-# Support running tests from the source tree
+-if not os.path.exists(DATA):
+-    from skbuild.constants import CMAKE_INSTALL_DIR as SKBUILD_CMAKE_INSTALL_DIR
+-    from skbuild.constants import set_skbuild_plat_name
+-
+-    if platform.system().lower() == "darwin":
+-        # Since building the project specifying --plat-name or CMAKE_OSX_* variables
+-        # leads to different SKBUILD_DIR, the code below attempt to guess the most
+-        # likely plat-name.
+-        _skbuild_dirs = os.listdir(os.path.join(os.path.dirname(__file__), '..', '..', '_skbuild'))
+-        if _skbuild_dirs:
+-            _likely_plat_name = '-'.join(_skbuild_dirs[0].split('-')[:3])
+-            set_skbuild_plat_name(_likely_plat_name)
+-
+-    _data = os.path.abspath(os.path.join(
+-        os.path.dirname(__file__), '..', '..', SKBUILD_CMAKE_INSTALL_DIR(), 'src/ninja/data'))
+-    if os.path.exists(_data):
+-        DATA = _data
+-
+-BIN_DIR = os.path.join(DATA, 'bin')
+-
  
  def _program(name, args):
 -    return subprocess.call([os.path.join(BIN_DIR, name)] + args, close_fds=False)
diff --git a/meta-python/recipes-devtools/python/python3-ninja_1.11.1.bb b/meta-python/recipes-devtools/python/python3-ninja_1.11.1.bb
index 635fd076a5..47a70aa38a 100644
--- a/meta-python/recipes-devtools/python/python3-ninja_1.11.1.bb
+++ b/meta-python/recipes-devtools/python/python3-ninja_1.11.1.bb
@@ -2,33 +2,19 @@  SUMMARY = "Ninja is a small build system with a focus on speed"
 LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://LICENSE_Apache_20;md5=19cbd64715b51267a47bf3750cc6a8a5"
 
-DEPENDS = "ninja-native cmake-native python3-scikit-build-native"
-
 PYPI_PACKAGE = "ninja"
 PYPI_ARCHIVE_NAME_PREFIX = "pypi-"
 
 inherit pypi python_setuptools_build_meta
 SRC_URI[sha256sum] = "c833a47d39b2d1eee3f9ca886fa1581efd5be6068b82734ac229961ee8748f90"
 
-SRC_URI += " \
-	file://CMakeLists.txt \
-	file://run-ninja-from-path.patch \
-"
-
-addtask do_patchbuild after do_patch before do_configure
-
-do_patchbuild () {
-	rm -f ${S}/CMakeLists.txt
-	cp ${WORKDIR}/CMakeLists.txt ${S}/
-}
+SRC_URI += "file://no-scikit-build.patch \
+            file://run-ninja-from-path.patch"
 
 do_install:append () {
 	rm -rf ${D}${bindir}
 }
 
-RDEPENDS:${PN} = " \
-	ninja \
-	python3-scikit-build \
-"
+RDEPENDS:${PN} = "ninja"
 
 BBCLASSEXTEND = "native nativesdk"