I would like to know if there is a way to install a specific Mrtrix3 release (and older one) and not the latest one.
Yes, but it’ll depend on how you want to install it. Are you after a precompiled version or from source? If precompiled, which method do you need to use? Or rather which, which method have you used for your current version?
I have installed Mrtrix3 through conda package
OK, conda actually supports this out of the box. The way to do it (as far as I understand it) is to set up a new conda environment, with the specific versions of the package you’re interested in within that. For example, if you’re after version 3.0.0, this ought to do the trick (if I’ve read the instructions linked to above correctly):
conda create --name mrtrix-3.0.0 mrtrix3=3.0.0
That’ll allow you to switch between your default environment and the new one with the older version of MRtrix with a simple
conda activate mrtrix-3.0.0 (assuming that’s what you’ve called your new environment), and you can return to your default environment with
Of course, this only works for MRtrix versions 3.0.0 and above - we didn’t provide pre-compiled packages before that point. If you need older versions, then you’ll need to compile them from source. I can provide instructions for that too, if you need them – let me know.
I will try this way, thank you
Using conda environment creation produces this error:
conda create -n mrtrix-3.0.0 mrtrix3=3.0.0 Collecting package metadata (current_repodata.json): done Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source. Collecting package metadata (repodata.json): done Solving environment: failed PackagesNotFoundError: The following packages are not available from current channels: - mrtrix3=3.0.0 Current channels: - https://repo.anaconda.com/pkgs/main/linux-64 - https://repo.anaconda.com/pkgs/main/noarch - https://repo.anaconda.com/pkgs/r/linux-64 - https://repo.anaconda.com/pkgs/r/noarch To search for alternate channels that may provide the conda package you're looking for, navigate to https://anaconda.org and use the search bar at the top of the page.
I will try to insoect why this happens
Sorry, forgot you had to also specify the
mrtrix3 channel. Try this:
conda create -n mrtrix-3.0.0 -c mrtrix3 mrtrix3=3.0.0
This works, thank you
However, I unfortunately realised I need a release before 3.0.0.
So I will need to install it from source
Clone the GitHub repo into a sensibly named folder
I recommend you name it after the version you’re interested in:
git clone https://github.com/MRtrix3/mrtrix3.git mrtrix-3.0_RC3
Checkout the particular version you’re interested in
See the full list here - you’re interested in the tag name, shown to the side of each release
git checkout 3.0_RC3
Configure and build:
./configure && ./build
Add this version to your PATH on demand
I don’t recommend you run the
./set_path script at this point, since this will make that version hard-coded as the default. Better to insert that version into your PATH as needed for your session, using this command:
You can copy/paste that into your terminal when you want that session to use that version. It will apply until that shell/terminal is closed, and won’t affect other sessions. Obviously, you may need to amend the exact folder name and location if you’ve named it differently.
You can repeat that for any other versions you may want to install.
Perfect, so do I need to install all the dependencies manually?
Yes. I would also strongly recommend you do this outside of anaconda. It’s very difficult to get MRtrix to compile within anaconda…