File _patchinfo of Package patchinfo.32481

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File _patchinfo of Package patchinfo.32481

<patchinfo incident="32481">
  <issue tracker="bnc" id="1219480">[RN, Spack] Release Notes for Spack version 0.21.1</issue>
  <packager>eeich</packager>
  <rating>moderate</rating>
  <category>recommended</category>
  <summary>Recommended update for spack</summary>
  <description>This update for spack fixes the following issues:

spack was updated to version 0.21.1 (bsc#1219480):

- Version 0.21.1:

* Add support for reading buildcaches created by Spack v0.22
  * Bugfixes:

+ `spack graph`: fix coloring with environments
    + `spack info`: sort variants in --variants-by-name
    + `Spec.format`: error on old style format strings
    + ASP-based solver:
 
       - fix infinite recursion when computing concretization
         errors
       - don't error for type mismatch on preferences
       - don't emit spurious debug output.

+ Improve the error message for deprecated preferences
    + Fix multi-word aliases
    + Add a warning for unconfigured compiler
    + environment: fix an issue with deconcretization/reconcretization of specs
    + buildcache: don't error if a patch is missing, when installing from binaries

- Version 0.21.0:

* New features:

+ Better error messages with condition chaining:
      In v0.18, we added better error messages that could tell you
      what problem happened, but they couldn't tell you why it
      happened. 0.21 adds condition chaining to the solver, and
      Spack can now trace back through the conditions that led to
      an error and build a tree of causes potential causes and
      where they came from.
    + OCI build caches:
      You can now use an arbitrary OCI registry as a build cache:
 
      - For Dockerhub:

`$ spack mirror add my_registry oci://user/image`

- For another registry (GHCR): 
       
        `$ spack mirror add my_registry oci://ghcr.io/haampie/spack-test`
      
      Then set the login credentials:

`$ spack mirror set --push --oci-username ... --oci-password ... my_registry`
      
      and push to it:

`$ spack buildcache push my_registry [specs...]`
      
      You can optionally add a base image to get runnable images:

```
      $ spack buildcache push --base-image leap:15.5 my_registry python`
       Pushed ... as [image]:python-3.11.2-65txfcpqbmpawclvtasuog4yzmxwaoia.spack
      $ docker run --rm -it [image]:python-3.11.2-65txfcpqbmpawclvtasuog4yzmxwaoia.spack
       ```

This creates a container image from the Spack installations
      on the host system, without the need to run `spack install`
      from a `Dockerfile` or `sif` file. It also addresses the
      inconvenience of losing binaries of dependencies when
      `RUN spack install` fails inside `docker build`. Further, the
      container image layers and build cache tarballs are the same
      files. This means that `spack install` and `docker pull` use the
      exact same underlying binaries. If you previously used `spack
      install` inside of docker build, this feature helps you save
      storage by a factor two.
    + Multiple versions of build dependencies:
      Increasingly, complex package builds require multiple
      versions of some build dependencies. For example, Python
      packages frequently require very specific versions of
      `setuptools`, `cython`, while different physics packages
      require different versions of Python to build. The concretizer
      enforced that every solve was unified, i.e., so that there was
      only one version of every package. The concretizer now supports
      "duplicate" nodes for build dependencies, but enforces unification
      through transitive link and run dependencies. This will allow it
      to better resolve complex dependency graphs in ecosystems like
      Python.
    + Cherry-picking virtual dependencies:
      You can now select only a subset of virtual dependencies
      from a spec that may provide more. For example, to make mpich
      your mpi provider, you can be explicit by writing:
 
      `hdf5 ^[virtuals=mpi] mpich`
 
      Or, to use, e.g., `intel-parallel-studio` for blas along with
      an external `lapack` like `openblas`, you could write:

```
      strumpack ^[virtuals=mpi] intel-parallel-studio+mkl ^[virtuals=lapack] openblas`
      ```

The `virtuals=mpi` is an edge attribute, and dependency edges
      in Spack graphs now track which virtuals they satisfied.
    + The `spack deconcretize` command gives you control over what
      you want to update in an already concrete environment.
      As an example, with an environment built with meson, and you
      want to update your meson version, you can run:

`$spack deconcretize meson`

and have everything that depends on meson rebuilt the next
      time you run spack concretize. In the future, we'll handle
      this in a single command, but for now you can use this to
      drop bits of your lockfile and resolve your dependencies
      again.
    + UI Improvements:
      The `spack info` received a rework to make the output more
      appealing. It is now on par with  the rest of Spack's UI.
      `spack info` now makes much better use of terminal space and
      shows variants, their values, and their descriptions more
      clearly. Conditional variants are grouped separately so you
      can more easily understand how packages are structured.
      `spack checksum` now allows you to filter versions from your
      editor, or by version range. It also notifies you about
      potential download URL changes.
    + Environments can include definitions:
      Spack did not previously support using `include:` with The
      definitions section of an environment, but now it does. You
      can use this to curate lists of specs and more easily reuse
      them across environments.
    + Aliases:
      You can now add aliases to Spack commands in `config.yaml`,
      e.g. this might enshrine your favorite args to `spack find`
      as `spack f`:

```
      config:
        aliases:
          f: find -lv
      ```

+ Improved autoloading of modules:
      In this release, you can start using `hide_implicits: true`
      instead, which exposes only explicitly installed packages to
      the user, while still autoloading dependencies. On top of
      that, you can safely use `hash_length: 0`, as this config now
      only applies to the modules exposed to the user -- you don't
      have to worry about file name clashes for hidden
      dependencies.
      Note: for Tcl this feature requires Modules 4.7 or higher
 
  * Other new commands and directives:

+ `spack env activate` without arguments now loads a default
      environment that you do not have to create.
    + `spack find -H` / `--hashes`: a new shortcut for piping spack
      find output to other commands.
    + Add `spack checksum --verify`, fix `--add`.
    + New `default_args` context manager factors out common args for
      directives.
    + `spack compiler find --[no]-mixed-toolchain` lets you easily
      mix clang and gfortran on Linux

* Performance improvements:

+ `spack external find execution` is now much faster.
    + `spack location -i` is now much faster on success.
    + Drop redundant rpaths post install.
    + ASP-based solver: avoid cycles in clingo using hidden
      directive.
    + Fix multiple quadratic complexity issues in environments

* Other new features of note:

+ archspec: update to v0.2.2, support for Sapphire Rapids,
      Power10, Neoverse V2.
    + Propagate variants across nodes that don't have that variant
    + Implement fish shell completion.
    + Can now distinguish between source/binary mirror; don't ping
      mirror.spack.io as much.
    + Improve status reporting on `spack install`
      (add [n/total] display...).
</description>
</patchinfo>

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