Cannot resolve dependencies for spyder 4 when using conda-forge on win64

Issue Report Checklist

• Searched the issues page for similar reports
• Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• ~Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)~
• ~Could not reproduce inside jupyter qtconsole (if console-related)~
• ~Tried basic troubleshooting (if a bug/error)~
  • ~Restarted Spyder~
  • ~Reset preferences with spyder --reset~
  • ~Reinstalled the latest version of Anaconda~
  • ~Tried the other applicable steps from the Troubleshooting Guide~
• Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

Installing Spyder 4 from conda-forge does not succeed on win64 due to failing dependency checks.

Is conda-forge not yet supported?

What steps reproduce the problem?

1. Open a conda console
2. conda create -c conda-forge --name spyder_test spyder=4

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

Installation of Spyder 4 with dependencies.

Paste Traceback/Error Below (if applicable)

(base) C:\Users\...\python>conda create -c conda-forge --name spyder_test spyder=4
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: |
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abort.
failed

UnsatisfiableError: The following specifications were found to be incompatible with each other:



Package atomicwrites conflicts for:
spyder=4 -> atomicwrites
Package qdarkstyle conflicts for:
spyder=4 -> qdarkstyle[version='>=2.7']
Package pyzmq conflicts for:
spyder=4 -> pyzmq
Package pygments conflicts for:
spyder=4 -> pygments[version='>=2.0']
Package python-language-server conflicts for:
spyder=4 -> python-language-server[version='>=0.31.2,<0.32.0']
Package jedi conflicts for:
spyder=4 -> jedi=0.14.1
Package nbconvert conflicts for:
spyder=4 -> nbconvert
Package sphinx conflicts for:
spyder=4 -> sphinx
Package pympler conflicts for:
spyder=4 -> pympler
Package pickleshare conflicts for:
spyder=4 -> pickleshare
Package rtree conflicts for:
spyder=4 -> rtree
Package spyder-kernels conflicts for:
spyder=4 -> spyder-kernels[version='>=1.8.1,<2.0.0']
Package qtpy conflicts for:
spyder=4 -> qtpy[version='>=1.5.0']
Package qtawesome conflicts for:
spyder=4 -> qtawesome[version='>=0.5.7']
Package pexpect conflicts for:
spyder=4 -> pexpect
Package pyqt conflicts for:
spyder=4 -> pyqt[version='>=5.6,<5.13']
Package watchdog conflicts for:
spyder=4 -> watchdog
Package cloudpickle conflicts for:
spyder=4 -> cloudpickle
Package keyring conflicts for:
spyder=4 -> keyring
Package diff-match-patch conflicts for:
spyder=4 -> diff-match-patch
Package psutil conflicts for:
spyder=4 -> psutil
Package python conflicts for:
spyder=4 -> python[version='>=2.7,<2.8.0a0|>=3.6,<3.7.0a0|>=3.7,<3.8.0a0']
Package qtconsole conflicts for:
spyder=4 -> qtconsole[version='>=4.6.0']
Package numpydoc conflicts for:
spyder=4 -> numpydoc
Package pylint conflicts for:
spyder=4 -> pylint
Package chardet conflicts for:
spyder=4 -> chardet[version='>=2.0.0']
Package intervaltree conflicts for:
spyder=4 -> intervaltree
Package paramiko conflicts for:
spyder=4 -> paramiko
Note that strict channel priority may have removed packages required for satisfiability.

[mherrmann3]

Update: the problem was that I use conda-forge as the top channel & the setting channel_priority: strict. Solution:

conda config --env --set channel_priority disabled
conda update spyder

See details here: stackoverflow.com/a/59307296/3801913

I guess this means that strict channel_priority is not a really clever (and future proof) idea, yet.

[mherrmann3]

Any update on this? I’m also still not able to update to Spyder v4.0.0 on Win x64 with the conda-forge channel (UnsatisfiableError) . However, it works with the anaconda channel: conda create -n spyder -c anaconda spyder