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diff --git a/CHANGELOG.md b/CHANGELOG.md index 754ce64d54..fb8a4202a8 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,3 +1,113 @@ +# v0.16.0 (2020-11-18) + +`v0.16.0` is a major feature release. + +## Major features in this release + +1. **New concretizer (experimental)** Our new backtracking concretizer is + now in Spack as an experimental feature. You will need to install + `clingo@master+python` and set `concretizer: clingo` in `config.yaml` + to use it. The original concretizer is not exhaustive and is not + guaranteed to find a solution if one exists. We encourage you to use + the new concretizer and to report any bugs you find with it. We + anticipate making the new concretizer the default and including all + required dependencies for it in Spack `v0.17`. For more details, see + #19501. + +2. **spack test (experimental)** Users can add `test()` methods to their + packages to run smoke tests on installations with the new `spack test` + command (the old `spack test` is now `spack unit-test`). `spack test` + is environment-aware, so you can `spack install` an environment and + `spack test run` smoke tests on all of its packages. Historical test + logs can be perused with `spack test results`. Generic smoke tests for + MPI implementations, C, C++, and Fortran compilers as well as specific + smoke tests for 18 packages. This is marked experimental because the + test API (`self.run_test()`) is likely to be change, but we encourage + users to upstream tests, and we will maintain and refactor any that + are added to mainline packages (#15702). + +3. **spack develop** New `spack develop` command allows you to develop + several packages at once within a Spack environment. Running + `spack develop foo@v1` and `spack develop bar@v2` will check + out specific versions of `foo` and `bar` into subdirectories, which you + can then build incrementally with `spack install ` (#15256). + +4. **More parallelism** Spack previously installed the dependencies of a + _single_ spec in parallel. Entire environments can now be installed in + parallel, greatly accelerating builds of large environments. get + parallelism from individual specs. Spack now parallelizes entire + environment builds (#18131). + +5. **Customizable base images for spack containerize** + `spack containerize` previously only output a `Dockerfile` based + on `ubuntu`. You may now specify any base image of your choosing (#15028). + +6. **more external finding** `spack external find` was added in `v0.15`, + but only `cmake` had support. `spack external find` can now find + `bison`, `cuda`, `findutils`, `flex`, `git`, `lustre` `m4`, `mpich`, + `mvapich2`, `ncurses`, `openmpi`, `perl`, `spectrum-mpi`, `tar`, and + `texinfo` on your system and add them automatically to + `packages.yaml`. + +7. **Support aocc, nvhpc, and oneapi compilers** We are aggressively + pursuing support for the newest vendor compilers, especially those for + the U.S. exascale and pre-exascale systems. Compiler classes and + auto-detection for `aocc`, `nvhpc`, `oneapi` are now in Spack (#19345, + #19294, #19330). + +## Additional new features of note + +* New `spack mark` command can be used to designate packages as explicitly + installed, so that `spack gc` will not garbage-collect them (#16662). +* `install_tree` can be customized with Spack's projection format (#18341) +* `sbang` now lives in the `install_tree` so that all users can access it (#11598) +* `csh` and `tcsh` users no longer need to set `SPACK_ROOT` before + sourcing `setup-env.csh` (#18225) +* Spec syntax now supports `variant=*` syntax for finding any package + that has a particular variant (#19381). +* Spack respects `SPACK_GNUPGHOME` variable for custom GPG directories (#17139) +* Spack now recognizes Graviton chips + +## Major refactors + +* Use spawn instead of fork on Python >= 3.8 on macOS (#18205) +* Use indexes for public build caches (#19101, #19117, #19132, #19141, #19209) +* `sbang` is an external package now (https://github.com/spack/sbang, #19582) +* `archspec` is an external package now (https://github.com/archspec/archspec, #19600) + +## Deprecations and Removals + +* `spack bootstrap` was deprecated in v0.14.0, and has now been removed. +* `spack setup` is deprecated as of v0.16.0. +* What was `spack test` is now called `spack unit-test`. `spack test` is + now the smoke testing feature in (2) above. + +## Bugfixes + +Some of the most notable bugfixes in this release include: + +* Better warning messages for deprecated syntax in `packages.yaml` (#18013) +* `buildcache list --allarch` now works properly (#17827) +* Many fixes and tests for buildcaches and binary relcoation (#15687, + *#17455, #17418, #17455, #15687, #18110) + +## Package Improvements + +Spack now has 5050 total packages, 720 of which were added since `v0.15`. + +* ROCm packages (`hip`, `aomp`, more) added by AMD (#19957, #19832, others) +* Many improvements for ARM support +* `llvm-flang`, `flang`, and `f18` removed, as `llvm` has real `flang` + support since Flang was merged to LLVM mainline +* Emerging support for `spack external find` and `spack test` in packages. + +## Infrastructure + +* Major infrastructure improvements to pipelines on `gitlab.spack.io` +* Support for testing PRs from forks (#19248) is being enabled for all + forks to enable rolling, up-to-date binary builds on `develop` + + # v0.15.4 (2020-08-12) This release contains one feature addition: |