Trying conda install spyder=4.1.5 says missing xarray

Problem Description

trying to use

conda install spyder=4.1.5

gives an error

PackagesNotFoundError: The following packages are missing from the target environment:
  - conda-forge/noarch::xarray==0.15.1=py_0

However in the env:

conda list xarray
# packages in environment at C:\Users\bbate\Miniconda3\envs\keras-gpu-5:
#
# Name                    Version                   Build  Channel
xarray                    0.15.1                     py_0

What steps reproduce the problem?

1. Working env (conda, Windows 10) with Spyder 4.1.4
2. run conda install spyder=4.1.5
3. error:

PackagesNotFoundError: The following packages are missing from the target environment:
  - conda-forge/noarch::xarray==0.15.1=py_0

What is the expected output? What do you see instead?

Spyder should be updated to 4.1.5

Paste Traceback/Error Below (if applicable)

PackagesNotFoundError: The following packages are missing from the target environment:
  - conda-forge/noarch::xarray==0.15.1=py_0

Versions

• Spyder version: 4.1.4
• Python version: 3.7.6
• Qt version: 5.9.6
• PyQt version: 5.9.2
• Operating System name/version: Windows 10

Dependencies

N/A

[eafpres]

Please be sure to install everything from pip or to avoid mixing pip and conda packages as much as possible. Else you’ll get odd errors and segfaults, which are Spyder’s fault.

Understood. I think I need to shift to an all-pip strategy, given I must use packages not in conda. What I try to do now is install as much as possible in conda then add needed things with pip at the end. However, it becomes hard to update those environments.

[ccordoba12]

Please be sure to install everything from pip or to avoid mixing pip and conda packages as much as possible. Else you’ll get odd errors and segfaults, which are Spyder’s fault.