$ pixi info
System
------------
Pixi version: 0.66.0
TLS backend: rustls
Platform: linux-64
Virtual packages: __unix=0=0
: __linux=5.14.0=0
: __glibc=2.39=0
: __archspec=1=zen2
Cache dir: /home/kratsg/.cache/rattler/cache
Auth storage: /home/kratsg/.rattler/credentials.json
Config locations: No config files found
Global
------------
Bin dir: /home/kratsg/.pixi/bin
Environment dir: /home/kratsg/.pixi/envs
Manifest dir: /home/kratsg/.pixi/manifests/pixi-global.toml
Workspace
------------
Name: ml-platform
Version: 2026.3.18
Manifest file: /app/pixi.toml
Last updated: 19-03-2026 00:49:03
Environments
------------
Environment: default
Features: default
Channels: conda-forge
Dependency count: 0
Target platforms: linux-aarch64, osx-arm64, osx-64, linux-64
Prefix location: /app/.pixi/envs/default
Environment: dev
Features: dev, default
Channels: conda-forge
Dependency count: 2
Dependencies: python, tbump
Target platforms: linux-64, osx-64, linux-aarch64, osx-arm64
Prefix location: /app/.pixi/envs/dev
Tasks: bump, tbump
Environment: mlcpu
Features: mlbase, mlcpu, default
Channels: conda-forge
Dependency count: 50
Dependencies: python, pixi-kernel, root, openjdk, keras, numpy, pandas, scipy, scikit-learn, pyarrow, h5py, pytables, cython, matplotlib, seaborn, bokeh, graphviz, jupyter, jupyterlab_server, jupyterlab, notebook, ipykernel, metakernel, ipywidgets, jupyterlab-git, rise, uproot, rucio-clients, curl, wget, unzip, zip, vim, jq, rsync, git, make, compilers, pkg-config, freetype, libpng, zeromq, hdf5, tbb, zlib, requests, pillow, tqdm, imageio, tensorflow
PyPI Dependencies: tensorflow-datasets, keras-tuner, plumbum, jupyter-bokeh, qtpy, elasticsearch, gymnasium, JSAnimation, dask-labextension, atlasify, rucio-jupyterlab
Target platforms: linux-64
Prefix location: /app/.pixi/envs/mlcpu
Environment: ml
Features: mlbase, mlgpu, default
Channels: conda-forge
Dependency count: 50
Dependencies: python, pixi-kernel, root, openjdk, keras, numpy, pandas, scipy, scikit-learn, pyarrow, h5py, pytables, cython, matplotlib, seaborn, bokeh, graphviz, jupyter, jupyterlab_server, jupyterlab, notebook, ipykernel, metakernel, ipywidgets, jupyterlab-git, rise, uproot, rucio-clients, curl, wget, unzip, zip, vim, jq, rsync, git, make, compilers, pkg-config, freetype, libpng, zeromq, hdf5, tbb, zlib, requests, pillow, tqdm, imageio, tensorflow-gpu
PyPI Dependencies: tensorflow-datasets, keras-tuner, plumbum, jupyter-bokeh, qtpy, elasticsearch, gymnasium, JSAnimation, dask-labextension, atlasify, rucio-jupyterlab
Target platforms: linux-64
Prefix location: /app/.pixi/envs/ml
System requirements: cuda = "13.0"
Other files (e.g. script files, source files, etc.):
$ ls -lavh /app
total 456K
drwxr-xr-x. 1 root root 4.0K Mar 18 19:56 .
drwxr-xr-x. 1 root root 4.0K Mar 19 00:36 ..
drwxrwxrwx. 1 root root 4.0K Mar 19 00:36 .jupyter
drwxrwxrwx. 1 root root 4.0K Mar 18 19:56 .pixi
-rwxr-xr-x. 1 root root 1.8K Mar 18 19:54 entrypoint.sh
-rwxrwxrwx. 1 root root 411K Mar 19 00:39 pixi.lock
-rwxrwxrwx. 1 root root 2.0K Mar 18 19:53 pixi.toml
file is writeable. I suspect it should rely on the
is running on which is user-writeable (typically...?) but at the moment, I see no way to configure this from my end.
Checks
I have checked that this issue has not already been reported.
I have confirmed this bug exists on the latest version of pixi, using
pixi --version.Reproducible example
Commands I ran and their output:
$ $ pixi add -f mlcpu mplhep Error: × Permission denied (os error 13) at path "/app/.pixi.toml.IwHBzW"pixi.toml/pyproject.tomlfile that reproduces my issue: not relevantpixi infooutput:Other files (e.g. script files, source files, etc.):
Issue description
No response
Expected behavior
The problem I believe is in
pixi/crates/pixi_utils/src/atomic_write.rs
Lines 3 to 20 in c318ac1
pathfor thepixi.tomlfile is writeable. I suspect it should rely on the$TMPDIRof the machine thatpixiis running on which is user-writeable (typically...?) but at the moment, I see no way to configure this from my end.