- Update to version 0.20.1 with the following changes:
* Bug fixes:
+ Fix spec removed from an environment where not actually
removed if `--force` was not given.
+ Hotfix for a few recipes that treat CMake as a link
dependency.
+ Fix re-running stand-alone test a second time, which was
getting a trailing spurious failure.
+ Fix reading JSON manifest on Cray, reporting non-concrete
specs.
+ Fix a few bugs when generating Dockerfiles from Spack.
+ Fix a few long-standing bugs when generating module files.
+ Fix issues with building Python extensions when using an
external Python.
+ Fix `spack compiler remove`: remove from command line even
if they appear in different scopes.
* Features:
+ Speed-up module file generation.
+ Show external status as `[e]`.
+ Backport `archspec` fixes.
+ Improve a few error messages.