I do conda install -c spyder-ide spyder-unittest according to https://github.com/spyder-ide/spyder-unittest, but I keep getting
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: ...
What do I do wrong? Sorry, it seems simple, but I just started using Anaconda and Spyder.
According to the comment above, spyder-unittest is incompatible with Spyder 5 at the moment. Solution: conda uninstall spyder and conda install spyder=4.2.5. Just downgrading with conda install spyder=4.2.5 DID NOT WORK. After that conda install -c spyder-ide spyder-unittest worked like a charm in no time and the expected buttons are shown in the IDE.