From acfb7b4e2ae0ac2ea5f6c9f1154a2054b3fc0495 Mon Sep 17 00:00:00 2001
From: Daniele Nicolodi <daniele@grinta.net>
Date: Tue, 29 Sep 2026 17:27:51 +0200
Subject: [PATCH 1/5] ENH: do not remove absolute build RPATH entries

Meson automatically adds RPATH entries for shared libraries built as
part of the project, using relative paths anchored at $ORIGIN or
@loader_path, and for shared libraries from dependencies installed in
non-standard locations, using absolute paths.  Installed binaries need
the absolute paths to find their external dependencies, so we keep
them.  The relative paths are only meaningful inside the build tree,
so we remove them.  Additional entries can be added with the
``build_rpath`` argument passed to Meson functions.  The most common
use case for these is to point at directories inside the build
directory.  These may be absolute paths, but they are irrelevant for
installed binaries, so we remove them too.

Fixes #912.

(cherry picked from commit df675be3eca9085b0b8cef3c2780ba8e14022cb2)
---
 mesonpy/__init__.py                           | 26 +++++++++++++++++--
 .../packages/purelib-and-platlib/meson.build  |  1 +
 tests/test_wheel.py                           |  6 +++--
 3 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/mesonpy/__init__.py b/mesonpy/__init__.py
index 3265688b3..85d5536dc 100644
--- a/mesonpy/__init__.py
+++ b/mesonpy/__init__.py
@@ -143,12 +143,15 @@ class _Entry(typing.NamedTuple):
 
 
 def _map_to_wheel(sources: Dict[str, Dict[str, Any]],
-                  exclude: List[str], include: List[str]) -> DefaultDict[str, List[_Entry]]:
+                  exclude: List[str], include: List[str],
+                  build_dir: str) -> DefaultDict[str, List[_Entry]]:
     """Map files to the wheel, organized by wheel installation directory."""
     wheel_files: DefaultDict[str, List[_Entry]] = collections.defaultdict(list)
     packages: Dict[str, str] = {}
     excluded = _compile_patterns(exclude)
     included = _compile_patterns(include)
+    build_dir = os.path.normpath(build_dir)
+    assert os.path.isabs(build_dir)
 
     for key, group in sources.items():
         for src, target in group.items():
@@ -206,6 +209,25 @@ def _map_to_wheel(sources: Dict[str, Dict[str, Any]],
                 if sys.platform == 'darwin':
                     install_rpath = [_translate_rpath(path, dst) for path in install_rpath]
 
+                # ``build_rpath`` lists the RPATH entries to remove from the
+                # binary.  Meson automatically adds RPATH entries for shared
+                # libraries built as part of the project, using relative paths
+                # anchored at ``$ORIGIN`` or ``@loader_path``, and for shared
+                # libraries from dependencies installed in non-standard
+                # locations, using absolute paths.  Installed binaries need
+                # the absolute paths to find their external dependencies, so
+                # we drop them from the list.  The relative paths are only
+                # meaningful inside the build tree, so we leave them in the
+                # list to be removed.  Additional entries can be added with
+                # the ``build_rpath`` argument passed to Meson functions.  The
+                # most common use case for these is to point at directories
+                # inside the build directory.  These may be absolute paths,
+                # but they are irrelevant for installed binaries, so we leave
+                # them too in the list to be removed.
+                build_rpath = [path for path in build_rpath
+                               if not path.startswith('/')
+                               or os.path.commonpath((os.path.normpath(path), build_dir)) == build_dir]
+
                 wheel_files[path].append(_Entry(dst, src, install_rpath, build_rpath))
 
     return wheel_files
@@ -1015,7 +1037,7 @@ def _manifest(self) -> DefaultDict[str, List[_Entry]]:
                 sources[key][target] = details
 
         # Map Meson installation locations to wheel paths.
-        return _map_to_wheel(sources, self._excluded_files, self._included_files)
+        return _map_to_wheel(sources, self._excluded_files, self._included_files, str(self._build_dir))
 
     @property
     def _meson_name(self) -> str:
diff --git a/tests/packages/purelib-and-platlib/meson.build b/tests/packages/purelib-and-platlib/meson.build
index 5451c9431..5ccfbf725 100644
--- a/tests/packages/purelib-and-platlib/meson.build
+++ b/tests/packages/purelib-and-platlib/meson.build
@@ -16,4 +16,5 @@ py.extension_module(
     'plat.c',
     install: true,
     install_tag: 'platlib',
+    build_rpath: ':'.join(['/usr/local/lib', meson.current_build_dir() / 'private']),
 )
diff --git a/tests/test_wheel.py b/tests/test_wheel.py
index a7cb150dc..4c74193e6 100644
--- a/tests/test_wheel.py
+++ b/tests/test_wheel.py
@@ -290,8 +290,10 @@ def test_uneeded_rpath(wheel_purelib_and_platlib, tmp_path):
 
     origin = '@loader_path' if sys.platform == 'darwin' else '$ORIGIN'
     rpath = mesonpy._rpath.get_rpath(tmp_path / f'plat{EXT_SUFFIX}')
-    for path in rpath:
-        assert origin not in path
+
+    assert not any(path.startswith(origin) for path in rpath)
+    assert '/usr/local/lib' in rpath
+    assert not any(path.endswith('private') for path in rpath) or not BUILD_RPATH_SUPPORT
 
 
 @pytest.mark.skipif(sys.platform in {'win32', 'cygwin'}, reason='requires RPATH support')

From 8ad6c6a38bdb852f984db2330c5f24e22057280f Mon Sep 17 00:00:00 2001
From: Ralf Gommers <ralf.gommers@gmail.com>
Date: Tue, 29 Sep 2026 10:31:42 +0000
Subject: [PATCH 2/5] TST: test linking against an external GEOS library

Discover GEOS through pkg-config without supplying an explicit runtime path, then verify that the installed wheel can import and query the linked library version. Skip when GEOS is unavailable.

(cherry picked from commit e8a245b8343e8b65d0901490ff5e18d8e583e600)
---
 .../link-against-external-lib/external.c      | 23 +++++++++++++++++++
 .../link-against-external-lib/meson.build     | 16 +++++++++++++
 .../link-against-external-lib/pyproject.toml  |  7 ++++++
 tests/test_wheel.py                           | 17 ++++++++++++++
 4 files changed, 63 insertions(+)
 create mode 100644 tests/packages/link-against-external-lib/external.c
 create mode 100644 tests/packages/link-against-external-lib/meson.build
 create mode 100644 tests/packages/link-against-external-lib/pyproject.toml

diff --git a/tests/packages/link-against-external-lib/external.c b/tests/packages/link-against-external-lib/external.c
new file mode 100644
index 000000000..2f9516e99
--- /dev/null
+++ b/tests/packages/link-against-external-lib/external.c
@@ -0,0 +1,23 @@
+// SPDX-FileCopyrightText: 2026 The meson-python developers
+//
+// SPDX-License-Identifier: MIT
+
+#include <Python.h>
+#include <geos_c.h>
+
+static PyObject *version(PyObject *self, PyObject *args) {
+    return PyUnicode_FromString(GEOSversion());
+}
+
+static PyMethodDef methods[] = {
+    {"version", version, METH_NOARGS, NULL},
+    {NULL, NULL, 0, NULL},
+};
+
+static struct PyModuleDef module = {
+    PyModuleDef_HEAD_INIT, "external", NULL, -1, methods,
+};
+
+PyMODINIT_FUNC PyInit_external(void) {
+    return PyModule_Create(&module);
+}
diff --git a/tests/packages/link-against-external-lib/meson.build b/tests/packages/link-against-external-lib/meson.build
new file mode 100644
index 000000000..baee3d8fc
--- /dev/null
+++ b/tests/packages/link-against-external-lib/meson.build
@@ -0,0 +1,16 @@
+# SPDX-FileCopyrightText: 2026 The meson-python developers
+#
+# SPDX-License-Identifier: MIT
+
+project('link-against-external-lib', 'c', version: '1.0.0')
+
+py = import('python').find_installation(pure: false)
+
+external = dependency('geos', method: 'pkg-config')
+
+py.extension_module(
+    'external',
+    'external.c',
+    dependencies: external,
+    install: true
+)
diff --git a/tests/packages/link-against-external-lib/pyproject.toml b/tests/packages/link-against-external-lib/pyproject.toml
new file mode 100644
index 000000000..435419311
--- /dev/null
+++ b/tests/packages/link-against-external-lib/pyproject.toml
@@ -0,0 +1,7 @@
+# SPDX-FileCopyrightText: 2026 The meson-python developers
+#
+# SPDX-License-Identifier: MIT
+
+[build-system]
+build-backend = 'mesonpy'
+requires = ['meson-python']
diff --git a/tests/test_wheel.py b/tests/test_wheel.py
index 4c74193e6..22c72110c 100644
--- a/tests/test_wheel.py
+++ b/tests/test_wheel.py
@@ -6,6 +6,7 @@
 import re
 import shutil
 import stat
+import subprocess
 import sys
 import textwrap
 
@@ -268,6 +269,22 @@ def check(rpath, *expected):
     check(rpath, 'custom-rpath', f'{origin}/../.link_against_local_lib.mesonpy.libs')
 
 
+@pytest.mark.skipif(sys.platform in {'win32', 'cygwin'}, reason='requires RPATH support')
+@pytest.mark.skipif(shutil.which('pkg-config') is None, reason='requires pkg-config')
+def test_link_against_external_lib_rpath(package_link_against_external_lib, tmp_path, venv):
+    if subprocess.run(['pkg-config', '--exists', 'geos']).returncode:
+        pytest.skip('requires GEOS')
+    version = subprocess.check_output(['pkg-config', '--modversion', 'geos'], text=True).strip()
+
+    # Use an installed dependency without supplying an explicit RPATH.
+    # Check its version too, to detect fallback to a different system copy.
+    filename = mesonpy.build_wheel(tmp_path)
+    venv.pip('install', tmp_path / filename)
+    output = venv.python('-c', 'import external; print(external.version())')
+    # GEOSversion() appends the C API version after "-CAPI-".
+    assert output.strip().split('-CAPI-')[0] == version
+
+
 @pytest.mark.skipif(sys.platform in {'win32', 'cygwin'}, reason='requires RPATH support')
 def test_link_against_local_lib_rpath_ldflags(package_link_against_local_lib, tmp_path, monkeypatch):
     origin = '@loader_path' if sys.platform == 'darwin' else '$ORIGIN'

From a2c40af35c044fbf1a0b696b9c5c802e00b231b5 Mon Sep 17 00:00:00 2001
From: Ralf Gommers <ralf.gommers@gmail.com>
Date: Tue, 29 Sep 2026 10:31:51 +0000
Subject: [PATCH 3/5] CI: test pixi with conda and system compilers

Share locked base dependencies, including GEOS, between environments with and without conda C/C++ compilers. Run them as pixi and pixi-system-compilers jobs.

(cherry picked from commit 49a633f0cac62bf2fe21ea6c15d00450a22bd5e2)
---
 .github/workflows/pixi.lock | 198 +++++++++++++++++++++++++-----------
 .github/workflows/pixi.toml |  11 +-
 .github/workflows/tests.yml |  12 ++-
 3 files changed, 161 insertions(+), 60 deletions(-)

diff --git a/.github/workflows/pixi.lock b/.github/workflows/pixi.lock
index 6d9754a3a..49fb18134 100644
--- a/.github/workflows/pixi.lock
+++ b/.github/workflows/pixi.lock
@@ -18,13 +18,14 @@ environments:
       - conda: https://prefix.dev/conda-forge/linux-aarch64/c-ares-1.34.8-h29ee22c_2.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/c-compiler-2.0.0-h1f08cd5_0.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/cmake-4.4.2-hcbeb305_2.conda
-      - conda: https://prefix.dev/conda-forge/linux-aarch64/conda-gcc-specs-15.3.0-hbdd0822_4.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/conda-gcc-specs-15.3.0-hbdd0822_7.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/cxx-compiler-2.0.0-hf41333a_0.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/cython-3.3.0-py314h1eee2f1_0.conda
-      - conda: https://prefix.dev/conda-forge/linux-aarch64/gcc-15.3.0-hfdd745d_4.conda
-      - conda: https://prefix.dev/conda-forge/linux-aarch64/gcc_impl_linux-aarch64-15.3.0-hfe63468_4.conda
-      - conda: https://prefix.dev/conda-forge/linux-aarch64/gxx-15.3.0-hfdd745d_4.conda
-      - conda: https://prefix.dev/conda-forge/linux-aarch64/gxx_impl_linux-aarch64-15.3.0-hcb04d1e_4.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/gcc-15.3.0-hfdd745d_7.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/gcc_impl_linux-aarch64-15.3.0-h543efd9_7.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/geos-3.15.0-h4125222_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/gxx-15.3.0-hfdd745d_7.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/gxx_impl_linux-aarch64-15.3.0-hcb04d1e_7.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/icu-78.3-py311h3512406_2.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/keyutils-1.6.3-h5bc82ec_1.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/krb5-1.22.2-h095d8e5_2.conda
@@ -40,7 +41,7 @@ environments:
       - conda: https://prefix.dev/conda-forge/linux-aarch64/libmpdec-4.0.0-he30d5cf_2.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/libnghttp2-1.68.1-ha4b982d_1.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/libpsl-0.23.1-hb8431ed_1.conda
-      - conda: https://prefix.dev/conda-forge/linux-aarch64/libsanitizer-15.3.0-he541324_4.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libsanitizer-15.3.0-he541324_7.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/libsqlite-3.53.4-h399dd60_1.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/libssh2-1.11.1-h7572e3e_1.conda
       - conda: https://prefix.dev/conda-forge/linux-aarch64/libstdcxx-16.2.0-hef695bb_4.conda
@@ -63,8 +64,8 @@ environments:
       - conda: https://prefix.dev/conda-forge/noarch/importlib-metadata-9.0.0-pyhcf101f3_0.conda
       - conda: https://prefix.dev/conda-forge/noarch/iniconfig-2.3.0-pyhd8ed1ab_0.conda
       - conda: https://prefix.dev/conda-forge/noarch/kernel-headers_linux-aarch64-4.18.0-h05a177a_9.conda
-      - conda: https://prefix.dev/conda-forge/noarch/libgcc-devel_linux-aarch64-15.3.0-h6e7e4e0_104.conda
-      - conda: https://prefix.dev/conda-forge/noarch/libstdcxx-devel_linux-aarch64-15.3.0-h0e8df58_104.conda
+      - conda: https://prefix.dev/conda-forge/noarch/libgcc-devel_linux-aarch64-15.3.0-h6e7e4e0_107.conda
+      - conda: https://prefix.dev/conda-forge/noarch/libstdcxx-devel_linux-aarch64-15.3.0-h0e8df58_107.conda
       - conda: https://prefix.dev/conda-forge/noarch/meson-1.12.0-pyhcf101f3_0.conda
       - conda: https://prefix.dev/conda-forge/noarch/packaging-26.3-pyhc364b38_0.conda
       - conda: https://prefix.dev/conda-forge/noarch/pip-26.2.1-pyh145f28c_0.conda
@@ -82,6 +83,69 @@ environments:
       - conda: https://prefix.dev/conda-forge/noarch/tzdata-2026c-h151e31d_0.conda
       - conda: https://prefix.dev/conda-forge/noarch/wheel-0.48.0-pyhd8ed1ab_0.conda
       - conda: https://prefix.dev/conda-forge/noarch/zipp-4.1.0-pyhcf101f3_0.conda
+  system-compilers:
+    channels:
+    - url: https://prefix.dev/conda-forge/
+    packages:
+      linux-aarch64:
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/_openmp_mutex-4.5-20_gnu.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/bzip2-1.0.8-h4777abc_10.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/c-ares-1.34.8-h29ee22c_2.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/cmake-4.4.2-hcbeb305_2.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/cython-3.3.0-py314h1eee2f1_0.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/geos-3.15.0-h4125222_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/icu-78.3-py311h3512406_2.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/keyutils-1.6.3-h5bc82ec_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/krb5-1.22.2-h095d8e5_2.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/ld_impl_linux-aarch64-2.46.1-default_h1979696_102.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libcurl-8.21.0-h86273da_5.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libedit-3.1.20250104-pl5321hc48eb74_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libev-4.33-h80f16a2_3.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libexpat-2.8.1-hfae3067_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libffi-3.7.0-h376a255_0.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libgcc-16.2.0-h205dda4_4.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libgomp-16.2.0-h8acb6b2_4.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/liblzma-5.8.3-he30d5cf_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libmpdec-4.0.0-he30d5cf_2.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libnghttp2-1.68.1-ha4b982d_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libpsl-0.23.1-hb8431ed_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libsqlite-3.53.4-h399dd60_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libssh2-1.11.1-h7572e3e_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libstdcxx-16.2.0-hef695bb_4.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libuuid-2.42.2-h1022ec0_0.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libuv-1.52.1-h80f16a2_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/libzlib-1.3.2-hdc9db2a_3.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/ncurses-6.6-h2b6f883_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/ninja-1.13.2-hdc560ac_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/openssl-3.6.3-h546c87b_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/patchelf-0.19.1-hfb11796_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/pkg-config-0.29.2-h36a561e_1011.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/python-3.14.7-h6bfacdd_100_cp314.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/readline-8.3-ha7194a6_1.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/rhash-1.4.6-he30d5cf_2.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/tk-8.6.13-noxft_hf03c496_4.conda
+      - conda: https://prefix.dev/conda-forge/linux-aarch64/zstd-1.5.7-h9d15635_7.conda
+      - conda: https://prefix.dev/conda-forge/noarch/ca-certificates-2026.7.22-hbd8a1cb_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/colorama-0.4.6-pyhd8ed1ab_1.conda
+      - conda: https://prefix.dev/conda-forge/noarch/exceptiongroup-1.3.1-pyhd8ed1ab_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/importlib-metadata-9.0.0-pyhcf101f3_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/iniconfig-2.3.0-pyhd8ed1ab_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/meson-1.12.0-pyhcf101f3_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/packaging-26.3-pyhc364b38_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/pip-26.2.1-pyh145f28c_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/pluggy-1.6.0-pyhf9edf01_1.conda
+      - conda: https://prefix.dev/conda-forge/noarch/pygments-2.21.0-pyhcf101f3_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/pyproject-metadata-0.12.1-pyhd8ed1ab_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/pyproject_hooks-1.2.0-pyhd8ed1ab_1.conda
+      - conda: https://prefix.dev/conda-forge/noarch/pytest-9.1.1-pyhc364b38_2.conda
+      - conda: https://prefix.dev/conda-forge/noarch/pytest-mock-3.15.1-pyhd8ed1ab_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/python-build-1.5.0-pyhc364b38_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/python_abi-3.14-8_cp314.conda
+      - conda: https://prefix.dev/conda-forge/noarch/tomli-2.4.1-pyhcf101f3_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/typing_extensions-4.16.0-pyhcf101f3_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/tzdata-2026c-h151e31d_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/wheel-0.48.0-pyhd8ed1ab_0.conda
+      - conda: https://prefix.dev/conda-forge/noarch/zipp-4.1.0-pyhcf101f3_0.conda
 packages:
 - conda: https://prefix.dev/conda-forge/linux-aarch64/_openmp_mutex-4.5-20_gnu.conda
   build_number: 20
@@ -164,15 +228,16 @@ packages:
   run_exports: {}
   size: 25496912
   timestamp: 1787209719745
-- conda: https://prefix.dev/conda-forge/linux-aarch64/conda-gcc-specs-15.3.0-hbdd0822_4.conda
-  sha256: d61e8e35090eac2af977f40d9b068fde2c3fdc3494f93230d955947709e4b581
-  md5: afa5c705e03c6afce0228ff2283d6309
+- conda: https://prefix.dev/conda-forge/linux-aarch64/conda-gcc-specs-15.3.0-hbdd0822_7.conda
+  sha256: 972da393305529c4db79f3d8f34291586dd8767bbb5e75ff84e4fe2a365240eb
+  md5: 5f1cec36f1dbe50c6d8c9ccf84a8be8c
   depends:
   - gcc_impl_linux-aarch64 >=15.3.0,<15.3.1.0a0
   license: GPL-3.0-only WITH GCC-exception-3.1
+  license_family: GPL
   run_exports: {}
-  size: 32418
-  timestamp: 1787617791870
+  size: 32657
+  timestamp: 1790302403105
 - conda: https://prefix.dev/conda-forge/linux-aarch64/cxx-compiler-2.0.0-hf41333a_0.conda
   sha256: 0616c1e5f97cbcb505f0daa119ca8c9975caca02c84c5bc4ceb0ef65bf7648a3
   md5: ce387759a5f3908b1273247b8660a048
@@ -195,55 +260,71 @@ packages:
   run_exports: {}
   size: 3955136
   timestamp: 1787435574078
-- conda: https://prefix.dev/conda-forge/linux-aarch64/gcc-15.3.0-hfdd745d_4.conda
-  sha256: fc89612ee4e163923ba713a8814114e8c402054e79b85e32b75d1c38031b4362
-  md5: 96724903f974e2151a077ec588bf9d7e
+- conda: https://prefix.dev/conda-forge/linux-aarch64/gcc-15.3.0-hfdd745d_7.conda
+  sha256: 83761e8fe27e7ffc9134662bee77523f011299d7a781cceb3ee0300474748aa8
+  md5: 3ee778b8a6192bf8f61687c3c44fb6c9
   depends:
   - conda-gcc-specs
-  - gcc_impl_linux-aarch64 15.3.0 hfe63468_4
+  - gcc_impl_linux-aarch64 15.3.0 h543efd9_7
   license: BSD-3-Clause
+  license_family: BSD
   run_exports: {}
-  size: 29466
-  timestamp: 1787617883836
-- conda: https://prefix.dev/conda-forge/linux-aarch64/gcc_impl_linux-aarch64-15.3.0-hfe63468_4.conda
-  sha256: 6039029f4ce021e0c49fb47824e981ba5d2863498c0855f78a73dc09a75cf151
-  md5: a6a25fd37f554f88b36a0d03af7775fa
+  size: 29585
+  timestamp: 1790302501803
+- conda: https://prefix.dev/conda-forge/linux-aarch64/gcc_impl_linux-aarch64-15.3.0-h543efd9_7.conda
+  sha256: b777f7fea75988191524a694b861222eef7d859b55ef200145bdb3559b243e54
+  md5: 509460640a88cadf2c9a5a4734134f51
   depends:
   - binutils_impl_linux-aarch64 >=2.46.1
   - libgcc >=15.3.0
-  - libgcc-devel_linux-aarch64 15.3.0 h6e7e4e0_104
+  - libgcc-devel_linux-aarch64 15.3.0 h6e7e4e0_107
   - libgomp >=15.3.0
-  - libsanitizer 15.3.0 he541324_4
+  - libsanitizer 15.3.0 he541324_7
   - libstdcxx >=15.3.0
-  - libstdcxx-devel_linux-aarch64 15.3.0 h0e8df58_104
+  - libstdcxx-devel_linux-aarch64 15.3.0 h0e8df58_107
   - sysroot_linux-aarch64
   license: GPL-3.0-only WITH GCC-exception-3.1
+  license_family: GPL
   run_exports: {}
-  size: 72956757
-  timestamp: 1787617681639
-- conda: https://prefix.dev/conda-forge/linux-aarch64/gxx-15.3.0-hfdd745d_4.conda
-  sha256: 36cd033b6473c8bf782ea7ceee7704b2db43bc2070acb9981620f0e86db7ad8d
-  md5: a633104932da5d9d0add986193a9b45d
+  size: 75249934
+  timestamp: 1790302274160
+- conda: https://prefix.dev/conda-forge/linux-aarch64/geos-3.15.0-h4125222_1.conda
+  sha256: fd9bc3de82aec81d91285fbe18b84c6fa94d55f6cd36364dd4b6c37ab8cbc10b
+  md5: 49e5818343217aff06b37c0d30ce6bfa
+  depends:
+  - libstdcxx >=15
+  - libgcc >=15
+  license: LGPL-2.1-only
+  run_exports:
+    weak:
+    - geos >=3.15.0,<3.15.1.0a0
+  size: 2425569
+  timestamp: 1789734780719
+- conda: https://prefix.dev/conda-forge/linux-aarch64/gxx-15.3.0-hfdd745d_7.conda
+  sha256: 1b378d9d5a0562e66363dacd64f5d0b2489e403cd5a6dd647b82ba45a63f95bd
+  md5: b0fc69e39425af4a983a5261a074c9a3
   depends:
   - conda-gcc-specs
-  - gcc 15.3.0 hfdd745d_4
-  - gxx_impl_linux-aarch64 15.3.0 hcb04d1e_4
+  - gcc 15.3.0 hfdd745d_7
+  - gxx_impl_linux-aarch64 15.3.0 hcb04d1e_7
   license: BSD-3-Clause
+  license_family: BSD
   run_exports: {}
-  size: 28835
-  timestamp: 1787617914335
-- conda: https://prefix.dev/conda-forge/linux-aarch64/gxx_impl_linux-aarch64-15.3.0-hcb04d1e_4.conda
-  sha256: e5a301d88d8902a8954adbf0c4a28b579960bae312d4bd6ba79463a20795a86e
-  md5: ba4fc57002f3425ed6a36496d299332d
-  depends:
-  - gcc_impl_linux-aarch64 15.3.0 hfe63468_4
-  - libstdcxx-devel_linux-aarch64 15.3.0 h0e8df58_104
+  size: 29012
+  timestamp: 1790302530292
+- conda: https://prefix.dev/conda-forge/linux-aarch64/gxx_impl_linux-aarch64-15.3.0-hcb04d1e_7.conda
+  sha256: 25df4cff4be63cdb6c93693b7312b2d5fc71034955d2a7748893585e46605750
+  md5: 1300d1ce6d51343ff98b59917686c5c3
+  depends:
+  - gcc_impl_linux-aarch64 15.3.0 h543efd9_7
+  - libstdcxx-devel_linux-aarch64 15.3.0 h0e8df58_107
   - sysroot_linux-aarch64
   - tzdata
   license: GPL-3.0-only WITH GCC-exception-3.1
+  license_family: GPL
   run_exports: {}
-  size: 14747440
-  timestamp: 1787617855670
+  size: 15475341
+  timestamp: 1790302472944
 - conda: https://prefix.dev/conda-forge/linux-aarch64/icu-78.3-py311h3512406_2.conda
   sha256: 54d921defd947adb58a90e10203d3bfe6c1f209f5f1a1ad2c6a9f7617f2fb59e
   md5: b35bbb1b957440ed742f35fb96eb7f1c
@@ -442,18 +523,19 @@ packages:
     - libpsl >=0.23.1,<0.24.0a0
   size: 73118
   timestamp: 1786970733378
-- conda: https://prefix.dev/conda-forge/linux-aarch64/libsanitizer-15.3.0-he541324_4.conda
-  sha256: fa1493b8ddd58f40ce4ef688a30cf93c0faf736f09821465e83d51d05475cb5c
-  md5: 82801a6523a59e75c3ca663a80ae810e
+- conda: https://prefix.dev/conda-forge/linux-aarch64/libsanitizer-15.3.0-he541324_7.conda
+  sha256: 28bd5d6389f032a594dbc8cf6af4fbca85fb6b386dd85b6c8d3ce9cd13aa998b
+  md5: baffcd8b96bdc491b795ae6b979f806f
   depends:
   - libgcc >=15.3.0
   - libstdcxx >=15.3.0
   license: GPL-3.0-only WITH GCC-exception-3.1
+  license_family: GPL
   run_exports:
     weak:
     - libsanitizer 15.3.0
-  size: 7569114
-  timestamp: 1787617645405
+  size: 7284100
+  timestamp: 1790302233451
 - conda: https://prefix.dev/conda-forge/linux-aarch64/libsqlite-3.53.4-h399dd60_1.conda
   sha256: fae75e68e9dbc3c90dcf93d4bae6315f1330c95aaf1404a721e8468266c23475
   md5: 27e16aa1f45c787aa181549be6f209f4
@@ -728,24 +810,26 @@ packages:
   run_exports: {}
   size: 1248134
   timestamp: 1765578613607
-- conda: https://prefix.dev/conda-forge/noarch/libgcc-devel_linux-aarch64-15.3.0-h6e7e4e0_104.conda
-  sha256: 7082eeeef07bba617b778348267956db5d0bf84eb5f1b5fe6ada9fee4a6fad85
-  md5: 4d59c62b87531bb11393daeb4b750c43
+- conda: https://prefix.dev/conda-forge/noarch/libgcc-devel_linux-aarch64-15.3.0-h6e7e4e0_107.conda
+  sha256: e26af963eeca0f3a9b17182b1686f3a08ad3a7633e2da92b95052b320a48480d
+  md5: 163cf0269dc64983bc6edf481a5557fb
   depends:
   - __unix
   license: GPL-3.0-only WITH GCC-exception-3.1
+  license_family: GPL
   run_exports: {}
-  size: 2353577
-  timestamp: 1787617542232
-- conda: https://prefix.dev/conda-forge/noarch/libstdcxx-devel_linux-aarch64-15.3.0-h0e8df58_104.conda
-  sha256: 648173a13da532b6599844d49243d40ba9baec655f7ddc5016cc567c89080a87
-  md5: 248aa5cadf9dc07c7c893b3acde3da1b
+  size: 2346429
+  timestamp: 1790302128084
+- conda: https://prefix.dev/conda-forge/noarch/libstdcxx-devel_linux-aarch64-15.3.0-h0e8df58_107.conda
+  sha256: 7c821bf495207ca0157b38a9d2c935356ed8dba096ffacd6676adb76c759b89c
+  md5: 709858d98ee8e0e91c4efddc6d02887f
   depends:
   - __unix
   license: GPL-3.0-only WITH GCC-exception-3.1
+  license_family: GPL
   run_exports: {}
-  size: 17560431
-  timestamp: 1787617560373
+  size: 17521094
+  timestamp: 1790302146011
 - conda: https://prefix.dev/conda-forge/noarch/meson-1.12.0-pyhcf101f3_0.conda
   sha256: 6c158a48c43f0b2e03dd26521fe940991285fd149773aaeb5ead843b2bda92ca
   md5: 73afbaae293a0d6feed3a5559b6d4359
diff --git a/.github/workflows/pixi.toml b/.github/workflows/pixi.toml
index 29aa24f0b..833abfffd 100644
--- a/.github/workflows/pixi.toml
+++ b/.github/workflows/pixi.toml
@@ -19,8 +19,7 @@ ninja = "*"
 pkg-config = "*"
 cmake = "*"
 patchelf = "*"
-c-compiler = "*"
-cxx-compiler = "*"
+geos = "*"
 pip = "*"
 python-build = "*"
 cython = "*"
@@ -28,5 +27,13 @@ pytest = "*"
 pytest-mock = "*"
 wheel = "*"
 
+[feature.compilers.dependencies]
+c-compiler = "*"
+cxx-compiler = "*"
+
+[environments]
+default = { features = ["compilers"], solve-group = "test" }
+system-compilers = { features = [], solve-group = "test" }
+
 [tasks]
 test = { cmd = "pytest", cwd = "../.." }
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 10c492ca7..339bf30a2 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -336,7 +336,16 @@ jobs:
         run: mypy -p mesonpy
 
   pixi:
+    name: ${{ matrix.name }}
     runs-on: ubuntu-24.04-arm
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: pixi
+            environment: default
+          - name: pixi-system-compilers
+            environment: system-compilers
     steps:
       - name: Checkout
         uses: actions/checkout@v7
@@ -347,11 +356,12 @@ jobs:
         with:
           pixi-version: v0.77.1
           manifest-path: .github/workflows/pixi.toml
+          environments: ${{ matrix.environment }}
           cache: false
 
       - name: Run tests
         working-directory: .github/workflows
-        run: pixi run test
+        run: pixi run --environment ${{ matrix.environment }} test
 
   uv-sync:
     runs-on: ubuntu-latest

From 261c11b2929138279f2b2825848ec2be68abb130 Mon Sep 17 00:00:00 2001
From: Ralf Gommers <ralf.gommers@gmail.com>
Date: Thu, 1 Oct 2026 23:37:47 +0100
Subject: [PATCH 4/5] DOC: update changelog for release 0.22.1

---
 CHANGELOG.rst | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index e279d9e05..afc327b00 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -11,6 +11,16 @@
 Changelog
 +++++++++
 
+0.22.1
+======
+
+- Do not remove absolute build RPATH entries, unless pointing within the
+  build directory. Fixes an issue when using system compilers in a conda
+  environment.
+
+Daniele Nicolodi, Ralf Gommers --- 01-10-2026.
+
+
 0.22.0
 ======
 

From 4771b36414f38a772fcf7364ef7f191f1dd5588b Mon Sep 17 00:00:00 2001
From: Ralf Gommers <ralf.gommers@gmail.com>
Date: Thu, 1 Oct 2026 23:38:32 +0100
Subject: [PATCH 5/5] REL: set version to 0.22.1

---
 mesonpy/__init__.py | 2 +-
 pyproject.toml      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mesonpy/__init__.py b/mesonpy/__init__.py
index 85d5536dc..4e6b3a1bb 100644
--- a/mesonpy/__init__.py
+++ b/mesonpy/__init__.py
@@ -85,7 +85,7 @@ class InvalidLicenseExpression(Exception):  # type: ignore[no-redef]
     Path = Union[str, os.PathLike[str]]
 
 
-__version__ = '0.22.0'
+__version__ = '0.22.1'
 
 
 _PYPROJECT_METADATA_VERSION = tuple(map(int, pyproject_metadata.__version__.split('.')[:2]))
diff --git a/pyproject.toml b/pyproject.toml
index 141e80022..374ae5cb8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ requires = [
 
 [project]
 name = 'meson-python'
-version = '0.22.0'
+version = '0.22.1'
 description = 'The Python build backend for Meson projects'
 readme = 'README.rst'
 requires-python = '>= 3.10'