./install_executorch.sh fails on pip due to dependency conflicts

[perheld]

🐛 Describe the bug

Cloning and setting up a new executorch as such:

git clone ...
git submodule sync
git submodule update --init
python3 -m venv env
source env/bin/activate
pip install -U pip setuptools wheel cmake pytest-cov zstd
./install_executorch.sh

Results in a dependency problem:

INFO: pip is looking at multiple versions of torchvision to determine which version is compatible with other requirements. This could take a while.
ERROR: Cannot install torch==2.7.0.dev20250311 and torchvision==0.22.0.dev20250311+cpu because these package versions have conflicting dependencies.

The conflict is caused by:
    The user requested torch==2.7.0.dev20250311
    torchvision 0.22.0.dev20250311+cpu depends on torch==2.7.0.dev20250310

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip to attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

The only workaround I have right now is to change install_requirements.py

diff --git a/install_requirements.py b/install_requirements.py
index 9353dad18..e508e35e4 100644
--- a/install_requirements.py
+++ b/install_requirements.py
@@ -67,7 +67,7 @@ TORCH_NIGHTLY_URL = "https://download.pytorch.org/whl/nightly/cpu"
 # NOTE: If a newly-fetched version of the executorch repo changes the value of
 # NIGHTLY_VERSION, you should re-run this script to install the necessary
 # package versions.
-NIGHTLY_VERSION = "dev20250311"
+NIGHTLY_VERSION = "dev20250310"

Versions

Running on latest greatest

cc @larryliu0820 @jathu @lucylq

[robell]

It seems like the CI does “./install_executorch.sh --use-pt-pinned-commit” which i assume is avoiding this by pulling a different pin. Not sure why the default is then “a random later” version? perhaps the other way round which is a pin by default, and --use-latest-pt if you want to explore...

[kimishpatel]

@Jack-Khuu who is the right PoC to resolve this? cc: @byjlw @mergennachin

[mergennachin]

@jathu @larryliu0820 are the build/install PoC, not @Jack-Khuu

@perheld - i'm actually trying to reproduce on my machine -- tried on both mac and linux, it is able to succeed to install_executorch.sh

could you try again on the latest main?

[mergennachin]

>>> import torch
>>> import torchaudio
>>> import torchvision
>>> torch.__version__
'2.7.0.dev20250311'
>>> torchvision.__version__
'0.22.0.dev20250311'
>>> torchaudio.__version__
'2.6.0.dev20250311'
>>>

[kimishpatel]

@jathu @larryliu0820 are the build/install PoC, not @Jack-Khuu

@perheld - i'm actually trying to reproduce on my machine -- tried on both mac and linux, it is able to succeed to install_executorch.sh

could you try again on the latest main?

ok I looked at our run book that listed Jack for everything else

[zingo]

I retried on latest and first got the problem but I was now able to fix it with a --clean
e.g. this work for me (kind of sure I tests this a few days also not sure if using and it didn't help then)

./install_executorch.sh --clean
./install_executorch.sh

I did a run with./install_executorch.sh --pybind xnnpack to test that in between that worked, so I'm unsure if that fixed something.

For ref this was on
6fb42ef [ET-VK] Adding boolean parameters to add_copy_offset_node to specify index calculation function in copy op's shader. (#9437)

We going to see if I could verify #9453
but now I don't see the problem anymore.

[mergennachin]

@zingo @perheld - can we close this then?

[zingo]

A spoke too soon I still get the error, I by a mixup put back the change per mention e.g set the version to NIGHTLY_VERSION = "dev20250310" in install_requirements.py
And seem to have got a false positive, sorry for the confusion

And now with #9453 merged the workaround dont work anymore, I assume you have to "revert" all chnagewd back to dev20250310

[dreamqin68]

I encountered a similar error when using the latest release v0.5.0. After running ./install_executorch.sh, I got the following error:

Collecting timm==1.0.7
  Using cached timm-1.0.7-py3-none-any.whl.metadata (47 kB)
ERROR: Cannot install timm==1.0.7, torch==2.6.0, torchaudio==2.6.0 and torchvision==0.21.0 because these package versions have conflicting dependencies.

The conflict is caused by:
    The user requested torch==2.6.0
    torchvision 0.21.0 depends on torch==2.6.0
    timm 1.0.7 depends on torch
    torchaudio 2.6.0 depends on torch==2.7.0

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip to attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

[kimishpatel]

Doesnt look like this is resolved yet cc next oncall @JacobSzwejbka