Develop Reference

Installing CERN ROOT in anaconda environment- packages are not available from current channels:

I am attempting to install CERNS ROOT in anaconda, for use of pyRoot. (I am using conda 4.10.3)
I have set up a new environment with python 2.7, because I believe I read somewhere that ROOT does not work well with python 3. After installing python to the new environment and activating it, I have added conda-forge to the current channels and attempted to install the following:
https://anaconda.org/conda-forge/root-dependencies
Using:
conda install -c conda-forge root-dependencies
This however returned the following:
(pyRoot) C:\Users\George>conda install -c conda-forge root-dependencies
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
PackagesNotFoundError: The following packages are not available from current channels:
- root-dependencies
Current channels:
- https://conda.anaconda.org/conda-forge/win-64
- https://conda.anaconda.org/conda-forge/noarch
- https://repo.anaconda.com/pkgs/main/win-64
- https://repo.anaconda.com/pkgs/main/noarch
- https://repo.anaconda.com/pkgs/free/win-64
- https://repo.anaconda.com/pkgs/free/noarch
- https://repo.anaconda.com/pkgs/r/win-64
- https://repo.anaconda.com/pkgs/r/noarch
- https://repo.anaconda.com/pkgs/msys2/win-64
- https://repo.anaconda.com/pkgs/msys2/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 am not sure why this is not working, as I am fairly sure the root-dependencies are available on the conda-forge channel as per the link.
I have tried the following:
SET CONDA_RESTORE_FREE_CHANNEL=1
Just in case it was part of the free channel that may have been dropped, but I still get the same error.
Any ideas are appreciated :)

The package is not built for win-64 platform, which is what OP channel configuration indicates is being used. Consider WSL2 or Docker (ROOT Project provides pre-built images).
If you would like Conda Forge to build a Windows version, submit an Issue on the feedstock. Just be aware that ROOT Project itself only has beta support for Windows natively, so it's likely not a trivial task.

Anaconda is unable to update/install packages

When trying to upgrade my anaconda distribution I keep getting the following error:
Collecting package metadata (repodata.json): done
Solving environment: failed
PackagesNotFoundError: The following packages are not available from current channels:
- pkgs/free/win-64::anaconda==4.4.0=np112py36_0 -> bzip2==1.0.6=vc14_3
- pkgs/free/win-64::anaconda==4.4.0=np112py36_0 -> cryptography==1.8.1=py36_0
[loads of similarly cryptic packages names]
- pkgs/free/win-64::anaconda==4.4.0=np112py36_0 -> vs2015_runtime==14.0.25123=0
Current channels:
- https://repo.anaconda.com/pkgs/main/win-64
- https://repo.anaconda.com/pkgs/main/noarch
- https://repo.anaconda.com/pkgs/r/win-64
- https://repo.anaconda.com/pkgs/r/noarch
- https://repo.anaconda.com/pkgs/msys2/win-64
- https://repo.anaconda.com/pkgs/msys2/noarch
- https://conda.anaconda.org/conda-forge/win-64
- https://conda.anaconda.org/conda-forge/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.
This is raised no matter what or how I try to install/update:
It is raised both with conda update --all and conda update numpy or any other package I tried, so this should not be due to some specific package that is not in the channel.
It is even raised when I try to update anaconda itself by conda update -n root conda.
I have tried updating numpy from Anaconda navigator.
Because of this question I added conda-forge to my channels - to no avail.
Grateful for any help.
EDIT: I finally solved this by completely removing and reinstalling Anaconda3, but I still lack an understanding of what exactly has originally caused the problem.

Package not found error while installing CuSpatial or CuDf library

So, to calculate Hausdorff Distance in a short time I found a CuSpatial library or cudf library. But while trying to install it through the Anaconda Promt conda install -c rapidsai-nightly cuspatial i get the following:
PackagesNotFoundError: The following packages are not available from current channels:
cuspatial
Current channels:
https://conda.anaconda.org/rapidsai-nightly/win-64
https://conda.anaconda.org/rapidsai-nightly/noarch
https://conda.anaconda.org/conda-forge/win-64
https://conda.anaconda.org/conda-forge/noarch
https://repo.anaconda.com/pkgs/main/win-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/r/win-64
https://repo.anaconda.com/pkgs/r/noarch
https://repo.anaconda.com/pkgs/msys2/win-64
https://repo.anaconda.com/pkgs/msys2/noarch
To search for alternate channels that may provide the conda package
you're looking for, navigate to
https://anaconda.org

Sorry, but no win-64 builds are available for that on Anaconda Cloud. The developers only seem to support Linux 64, but I suppose if you're adventurous you can attempt a build from source.

How to install fiona 1.6?

I am trying to install fiona=1.6 but I get the following error
conda install fiona=1.6
WARNING: The conda.compat module is deprecated and will be removed in a future release.
Collecting package metadata: done
Solving environment: -
The environment is inconsistent, please check the package plan carefully
The following packages are causing the inconsistency:
- conda-forge/noarch::flask-cors==3.0.7=py_0
- conda-forge/osx-64::blaze==0.11.3=py36_0
- conda-forge/noarch::flask==1.0.2=py_2
failed
PackagesNotFoundError: The following packages are not available from current channels:
- fiona=1.6 -> gdal==1.11.4
Current channels:
- https://conda.anaconda.org/conda-forge/osx-64
- https://conda.anaconda.org/conda-forge/noarch
To search for alternate channels that may provide the conda package you're
looking for, navigate to
https://anaconda.org
If I try to install gdal==1.11.4, I get the following
conda install -c conda-forge gdal=1.11.4
WARNING: The conda.compat module is deprecated and will be removed in a future release.
Collecting package metadata: done
Solving environment: |
The environment is inconsistent, please check the package plan carefully
The following packages are causing the inconsistency:
- conda-forge/noarch::flask-cors==3.0.7=py_0
- conda-forge/osx-64::blaze==0.11.3=py36_0
- conda-forge/noarch::flask==1.0.2=py_2
failed
PackagesNotFoundError: The following packages are not available from current channels:
- gdal=1.11.4
Current channels:
- https://conda.anaconda.org/conda-forge/osx-64
- https://conda.anaconda.org/conda-forge/noarch
- https://repo.anaconda.com/pkgs/main/osx-64
- https://repo.anaconda.com/pkgs/main/noarch
- https://repo.anaconda.com/pkgs/free/osx-64
- https://repo.anaconda.com/pkgs/free/noarch
- https://repo.anaconda.com/pkgs/r/osx-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.
This is the result of conda info
conda info
active environment : base
active env location : /anaconda3
shell level : 1
user config file : /Users/massaro/.condarc
populated config files : /Users/massaro/.condarc
conda version : 4.6.11
conda-build version : 3.17.8
python version : 3.6.8.final.0
base environment : /anaconda3 (writable)
channel URLs : https://conda.anaconda.org/conda-forge/osx-64
https://conda.anaconda.org/conda-forge/noarch
package cache : /anaconda3/pkgs
/Users/massaro/.conda/pkgs
envs directories : /anaconda3/envs
/Users/massaro/.conda/envs
platform : osx-64
user-agent : conda/4.6.11 requests/2.21.0 CPython/3.6.8 Darwin/17.5.0 OSX/10.13.4
UID:GID : 502:20
netrc file : None

Python Versions
The Conda Forge channel only has gdal v1.11.4 for Python 2.7, 3.4, and 3.5. You either need to use a newer version of Fiona (current is 1.8) or make a new env that includes one of those older Python versions.
For example,
conda create -n fiona_1_6 fiona=1.6 python=3.5
Channel defaults is Required
Another issue you face is that you have removed the defaults channel from your configuration (as per your conda info). It is impossible to install fiona=1.6 with only the conda-forge channel. My recommendation would be to have both conda-forge and defaults in your configuration, but just set conda-forge to have higher priority (if that's what you want). You can do this like so,
conda config --append channels defaults
If you really don't want to include defaults, but just want a temporary workaround, then you can simply run the first command with a --channels | -c flag
conda create -n fiona_1_6 -c conda-forge -c defaults fiona=1.6 python=3.5
This will still give conda-forge precedence, but allow missing dependencies to be sourced from defaults.
Environment File
If you have more than just Fiona that you require, it may be cleaner to put together a requirements file, like so
fiona_1_6.yaml
name: fiona_1_6
channels:
- conda-forge
- defaults
dependencies:
- python=3.5
- fiona=1.6
- osmnx
Then create the new environment with this:
conda env create -f fiona_1_6.yaml

Doing what the error message told me to,
To search for alternate channels that may provide the conda package you're
looking for, navigate to https://anaconda.org
and typing in gdal in the search box led me to https://anaconda.org/conda-forge/gdal which has this installation instruction:
conda install -c conda-forge gdal=1.11.4
Try that to install the gdal dependency, maybe?

Can't install qutip with anaconda in linux

I have the latest anaconda version from linux 32. I'm trying to install qutip with the command
conda install qutip
but the package is missing. I already tried adding conda-forge channel.
Any idea of why the package is missing? According to the Qutip documentacion this should be a possible way to install the package.
Error message:
Fetching package metadata ...........
PackageNotFoundError: Packages missing in current channels:
- qutip
We have searched for the packages in the following channels:
- https://conda.anaconda.org/conda-forge/linux-32
- https://conda.anaconda.org/conda-forge/noarch
- https://repo.continuum.io/pkgs/free/linux-32
- https://repo.continuum.io/pkgs/free/noarch
- https://repo.continuum.io/pkgs/r/linux-32
- https://repo.continuum.io/pkgs/r/noarch
- https://repo.continuum.io/pkgs/pro/linux-32
- https://repo.continuum.io/pkgs/pro/noarch

Indeed, we do not have linux32 builds on conda. You can install via pip though, or build from source.

You need to add a channel to install from that includes your build architecture. The conda-forge channel only has linux-64 builds: https://anaconda.org/search?q=qutip It doesn't look like there are any channels that support linux-32, but you can find the recipe for conda build here: https://github.com/conda-forge/qutip-feedstock, so you might be able to build your own package.