# Installing O2Physics in LXPLUS-Alma9

**URL:** <https://alice-talk.web.cern.ch/t/installing-o2physics-in-lxplus-alma9/1623>\
**Category:** O²\
**Tags:** build\
**Created:** [October 9, 2024, 4:08pm UTC](https://alice-talk.web.cern.ch/t/installing-o2physics-in-lxplus-alma9/1623 "2024-10-09T16:08:47Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![amanojna](https://alice-talk.web.cern.ch/letter_avatar_proxy/v4/letter/a/3e96dc/32.png) [@amanojna](https://alice-talk.web.cern.ch/u/amanojna)\
**Post date:** [October 9, 2024, 4:08pm UTC](https://alice-talk.web.cern.ch/t/installing-o2physics-in-lxplus-alma9/1623/1 "2024-10-09T16:08:47Z")

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Hello Experts,  
Any one know how to install the `O2Physics` in **CERNBOX** via **LXPLUS**? When i try to install it by creating a folder `alice` in `/eos/user/`, im getting the following error:

```auto
==> You have packages in development mode (O2, O2Physics).
    This means their source code can be freely modified under:

      /eos/home-a/amanojna/alice/<package_name>

    aliBuild does not automatically update such packages to avoid work loss.
    In most cases this is achieved by doing in the package source directory:

      git pull --rebase

==> Updating repositories: done
==> Unpacking GCC-Toolchain@v13.2.0-alice1: failed
2024-10-09@18:05:54:ERROR:O2Physics:GCC-Toolchain:0: Error while executing /eos/home-a/amanojna/alice/sw/SPECS/slc9_x86-64/GCC-Toolchain/v13.2.0-alice1-3/build.sh on `lxplus929.cern.ch'.
2024-10-09@18:05:54:ERROR:O2Physics:GCC-Toolchain:0: Log can be found in /eos/home-a/amanojna/alice/sw/BUILD/GCC-Toolchain-latest/log
2024-10-09@18:05:54:ERROR:O2Physics:GCC-Toolchain:0: Please upload it to CERNBox/Dropbox if you intend to request support.
2024-10-09@18:05:54:ERROR:O2Physics:GCC-Toolchain:0: Build directory is /eos/home-a/amanojna/alice/sw/BUILD/GCC-Toolchain-latest/GCC-Toolchain.

```

Anyone know any fix for this? I have successfully installed it in my local machine, but due to lack of storage, i was looking for an alternative.

Thank you in advance  
Anantha Padmanabhan M Nair

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<div class="post-metadata">

**Author:** ![eulisse](https://alice-talk.web.cern.ch/user_avatar/alice-talk.web.cern.ch/eulisse/32/19_2.png) [@eulisse](https://alice-talk.web.cern.ch/u/eulisse)\
**Post date:** [October 9, 2024, 5:37pm UTC](https://alice-talk.web.cern.ch/t/installing-o2physics-in-lxplus-alma9/1623/2 "2024-10-09T17:37:35Z")

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Do not use CERNBOX. It’s not made for development and it will not work (besides not being supported). Have you tried `aliBuild clean` to improve the usage on your machine?

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<div class="post-metadata">

**Author:** ![amanojna](https://alice-talk.web.cern.ch/letter_avatar_proxy/v4/letter/a/3e96dc/32.png) [@amanojna](https://alice-talk.web.cern.ch/u/amanojna)\
**Post date:** [October 10, 2024, 5:38am UTC](https://alice-talk.web.cern.ch/t/installing-o2physics-in-lxplus-alma9/1623/3 "2024-10-10T05:38:46Z")

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Could you please explain what `aliBuild clean` does?. Because, the way i am running the analysis task is by editing one of the files in `PWGUD/Tasks` and then going to `alice/sw/BUILD/O2Physics-latest/O2Physics/` and then doing `ninja PWGUD/install`, will i be able to do this if i wipe out the build contents by using `aliBuild clean` ?

Thank you  
Anantha