Again incompatibility Cython 3.1 and gcc<=12 (for pip)

Author: paugier

noxfile.py

@@ -122,16 +122,17 @@ def _get_modified_env(session):
     cflags = " ".join(flag for flag in out.split() if flag != "-g")
     env = os.environ.copy()
     env["CFLAGS"] = cflags
+    return env
 
 
 @nox.session
 def test_with_fft_and_pythran(session):
     print_times = TimePrinter()
 
+    env_modif = _get_modified_env(session)
+
     command = "pdm sync --clean -G dev -G test -G fft -G mpi --no-self"
-    session.run_install(
-        *command.split(), external=True, env=_get_modified_env(session)
-    )
+    session.run_install(*command.split(), external=True, env=env_modif)
 
     print_times("pdm sync")
 
@@ -146,7 +147,9 @@ def test_with_fft_and_pythran(session):
     if "GITLAB_CI" in os.environ:
         short_names.extend(["pfft", "p3dfft"])
     for short_name in short_names:
-        session.install(f"fluidfft-{short_name}")
+        session.run_install(
+            "pip", "install", f"fluidfft-{short_name}", "-v", env=env_modif
+        )
 
     _test(session)
 
@@ -156,17 +159,16 @@ def test_with_fft_and_pythran(session):
 @nox.session(name="test-examples")
 def test_examples(session):
     """Execute the examples using pytest"""
+    env_modif = _get_modified_env(session)
 
     command = "pdm sync --clean -G test -G mpi -G fft -G dev --no-self"
-    session.run_install(
-        *command.split(), external=True, env=_get_modified_env(session)
-    )
+    session.run_install(*command.split(), external=True, env=env_modif)
 
     command = "."
     if "GITLAB_CI" in os.environ:
         command += " -C compile-args=-j1"
     session.install(*command.split())
-    session.install("fluidfft-fftwmpi")
+    session.install("fluidfft-fftwmpi", env=env_modif)
 
     session.chdir("doc/examples")
     session.run("make", "test", external=True)