New features
- Add support for reading buildcaches created by Spack v0.22 (#41773)
Bugfixes
- spack graph: fix coloring with environments (#41240)
- spack info: sort variants in --variants-by-name (#41389)
- Spec.format: error on old style format strings (#41934)
- ASP-based solver:
- Improve the error message for deprecated preferences (#41075)
- Fix MSVC preview version breaking clingo build on Windows (#41185)
- Fix multi-word aliases (#41126)
- Add a warning for unconfigured compiler (#41213)
- environment: fix an issue with deconcretization/reconcretization of specs (#41294)
- buildcache: don't error if a patch is missing, when installing from binaries (#41986)
- Multiple improvements to unit-tests (#41215,#41369,#41495,#41359,#41361,#41345,#41342,#41308,#41226)