Polychord 1.20.0

[williamjameshandley]

This branch aligns cobaya with the latest version of polychord (1.20.0), as well as instantiating some functionality which was present in 1.18.2 (e.g. variable nlive, nprior and maximisation).

[codecov-commenter]

Codecov Report

Merging #232 (b9e479d) into master (1fdbb58) will increase coverage by 0.01%.
The diff coverage is 33.33%.

@@            Coverage Diff             @@
##           master     #232      +/-   ##
==========================================
+ Coverage   87.53%   87.55%   +0.01%     
==========================================
  Files          92       92              
  Lines        8057     8057              
==========================================
+ Hits         7053     7054       +1     
+ Misses       1004     1003       -1     

Impacted Files	Coverage Δ
cobaya/samplers/polychord/polychord.py	31.74% <33.33%> (ø)
cobaya/samplers/mcmc/mcmc.py	90.47% <0.00%> (+0.23%)	⬆️

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[JesusTorrado]

@williamjameshandley Any chance of a minor release in the next few days, including the __version__ variable that had not been added yet for the v1.20 tag?

It would be quite useful: with the new PR #237 users would get a warning at runtime that they need to install the new PolyChord version (they will have 1.18.2 installed at that point). Otherwise they'll get a non-descriptive error after they update Cobaya, if they haven't run cobaya-install.

[williamjameshandley]

Any possibility we could work #233 and #231 into the next cobaya release? I have tested them quite thoroughly locally. In particular cobaya does not work out-of-the-box without #231

[williamjameshandley]

I've now created a 1.20.1 release (the version number in cobaya/samplers/polychord/polychord.py will need to be updated)

[JesusTorrado]

Thanks!

#231 for sure. #233 in the next minor (I need to think about being able to use the external priors as such).