d3ee6c977b
- this fixes a bug where if we save a concretized sug-DAG where a package
had been patched by a dependent, and the dependent was not in the DAG,
we would not read in all patches correctly.
- Rather than looking up patches in the DAG, we look them up globally
from an index created from the entire repository.
- The patch cache is a bit tricky for several reasons:
- we have to cache information from packages, specifically, the patch
level and working directory.
- FilePatches need to know which package owns them, so that they can
figure out where the patch lives. The repo can change locations from
run to run, so we have to store relative paths and restore them when
the cache is reloaded.
- Patch files can change underneath the cache, because repo indexes
only update on package changes. We currently punt on this -- there
are stub methods for needs_update() that will need to check patch
files when packages are loaded. There isn't an easy way to do this
at global indexing time without making the FastPackageChecker a lot
slower. This is TBD for a future commit.
- Currently, the same patch can only be used one way in a package. That
is, if it appears twice with different level/working_dir settings,
bad things will happen. There's no package that current uses the
same patch two different ways, so we've punted on this as well, but
we may need to fix this in the future by moving a lot of the metdata
(level, working dir) to the spec, and *only* caching sha256sums in
the PatchCache. That would require some much more complicated tweaks
to the Spec, so we're holding off on that til later.
- This required patches to be refactored somewhat -- the difference
between a UrlPatch and a FilePatch is still not particularly clean.
|
||
|---|---|---|
| .github/ISSUE_TEMPLATE | ||
| bin | ||
| etc/spack/defaults | ||
| lib/spack | ||
| share/spack | ||
| var/spack | ||
| .codecov.yml | ||
| .coveragerc | ||
| .dockerignore | ||
| .flake8 | ||
| .flake8_packages | ||
| .gitignore | ||
| .mailmap | ||
| .travis.yml | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| COPYRIGHT | ||
| LICENSE-APACHE | ||
| LICENSE-MIT | ||
| NOTICE | ||
| README.md | ||
Spack
Spack is a multi-platform package manager that builds and installs multiple versions and configurations of software. It works on Linux, macOS, and many supercomputers. Spack is non-destructive: installing a new version of a package does not break existing installations, so many configurations of the same package can coexist.
Spack offers a simple "spec" syntax that allows users to specify versions and configuration options. Package files are written in pure Python, and specs allow package authors to write a single script for many different builds of the same package. With Spack, you can build your software all the ways you want to.
See the Feature Overview for examples and highlights.
To install spack and your first package, make sure you have Python. Then:
$ git clone https://github.com/spack/spack.git
$ cd spack/bin
$ ./spack install libelf
Documentation
Full documentation for Spack is the first place to look.
Try the Spack Tutorial, to learn how to use spack, write packages, or deploy packages for users at your site.
See also:
- Technical paper and slides on Spack's design and implementation.
- Short presentation from the Getting Scientific Software Installed BOF session at Supercomputing 2015.
Get Involved!
Spack is an open source project. Questions, discussion, and contributions are welcome. Contributions can be anything from new packages to bugfixes, or even new core features.
Mailing list
If you are interested in contributing to spack, join the mailing list. We're using Google Groups for this:
Slack channel
Spack has a Slack channel where you can chat about all things Spack:
Sign up here to get an invitation mailed to you.
You can follow @spackpm on Twitter for
updates. Also, feel free to @mention us in in questions or comments
about your own experience with Spack.
Contributions
Contributing to Spack is relatively easy. Just send us a
pull request.
When you send your request, make develop the destination branch on the
Spack repository.
Your PR must pass Spack's unit tests and documentation tests, and must be PEP 8 compliant. We enforce these guidelines with Travis CI. To run these tests locally, and for helpful tips on git, see our Contribution Guide.
Spack uses a rough approximation of the
Git Flow
branching model. The develop branch contains the latest
contributions, and master is always tagged and points to the latest
stable release.
Authors
Many thanks go to Spack's contributors.
Spack was created by Todd Gamblin, tgamblin@llnl.gov.
Citing Spack
If you are referencing Spack in a publication, please cite the following paper:
- Todd Gamblin, Matthew P. LeGendre, Michael R. Collette, Gregory L. Lee, Adam Moody, Bronis R. de Supinski, and W. Scott Futral. The Spack Package Manager: Bringing Order to HPC Software Chaos. In Supercomputing 2015 (SC’15), Austin, Texas, November 15-20 2015. LLNL-CONF-669890.
License
Spack is distributed under the terms of both the MIT license and the Apache License (Version 2.0). Users may choose either license, at their option.
All new contributions must be made under both the MIT and Apache-2.0 licenses.
See LICENSE-MIT, LICENSE-APACHE, COPYRIGHT, and NOTICE for details.
SPDX-License-Identifier: (Apache-2.0 OR MIT)
LLNL-CODE-647188