diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 52fb14a6..ce237ab7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -73,7 +73,8 @@ pixi-test:
     - pixi info
     # - rm -rf ../transonic
     # - hg clone https://foss.heptapod.net/fluiddyn/transonic ../transonic
-    - pixi run install-editable
+    - pixi run install-dependencies
+    - pixi run pip install -e . -v --no-build-isolation --no-deps -C compile-args=-j4
     - pixi run pytest -v lib
     - pixi run fluidsim-test -v
     # currently broken because of fluidfft conda issues
diff --git a/noxfile.py b/noxfile.py
index fb97a6f9..e9bd69e5 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -53,7 +53,11 @@ def test_with_fft_and_pythran(session):
     _install_fluidfft(session)
     command = "pdm sync --clean -G dev -G test -G fft -G mpi --no-self"
     session.run_always(*command.split(), external=True)
-    session.install(".", "-v", "--no-deps", "-C", "setup-args=-Dnative=true")
+
+    command = ". -v --no-deps -C setup-args=-Dnative=true"
+    if "GITLAB_CI" in os.environ:
+        command += " -C compile-args=-j4"
+    session.install(*command.split())
 
     _test(session)
 
@@ -63,9 +67,7 @@ def doc(session):
     _install_fluidfft(session)
     command = "pdm sync -G doc -G fft -G test --no-self"
     session.run_always(*command.split(), external=True)
-    session.install(
-        ".", "--config-settings=setup-args=-Dtransonic-backend=python", "--no-deps"
-    )
+    session.install(".", "-C", "setup-args=-Dtransonic-backend=python", "--no-deps")
 
     session.chdir("doc")
     session.run("make", "cleanall", external=True)