Glenn Johnson 9209af950a new package: py-youtube-dl + fixes for dependencies (#15978)
* new package: py-youtube-dl + fixes for dependencies

This PR adds the py-youtube-dl program. In addition, there are a couple
of dependency packages that needed to be updated.

* ffmpeg
This is needed by py-youtube-dl. However, the spack ffmpeg recipe does
not include a lot of options, specifically, a dependency on openssl for
working with the https protocol.

- Added updated version.
- Added variants for the different licensing options.
- Added "meta" variants for X and drawtext. These turn on/off several
  options.
- Set variants and dependencies for many options. The defaults are based
  on the configuration settings in ffmpeg.
- Set dependencies that were missing or that will likely get pulled in
  from the system.

* libxml2
The ffmpeg+libxml2 variant initially failed to build. The issue is that
libxml2 sets the headers property to

include_dir = self.spec.prefix.include.libxml2

The ffmpeg configure looks for prefix.include and fills in the rest.
This could probably be patched in ffmpeg but the headers property in the
libxml2 recipe is not consistent with the environment module or the
pkgconfig file, both of which set the headers path to prefix.include.
This PR sets the libxml2 headers property to

include_dir = self.spec.prefix.include

A spot check of a few libxml2 dependents did not rreveal any problems
with this change.

* Comment out libxml2 dependency in ffmpeg

The header property issue of the spack libxml2 package will need to be
resolved in another PR before libxml2 can be enabled in ffmpeg.
2020-04-12 13:50:49 -05:00
2020-04-01 12:02:26 -05:00
2017-12-08 09:34:37 +01:00
2020-04-01 12:02:26 -05:00

Spack Spack

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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 zlib

Documentation

Full documentation is available, or run spack help or spack help --all.

Tutorial

We maintain a hands-on tutorial. It covers basic to advanced usage, packaging, developer features, and large HPC deployments. You can do all of the exercises on your own laptop using a Docker container.

Feel free to use these materials to teach users at your organization about Spack.

Community

Spack is an open source project. Questions, discussion, and contributions are welcome. Contributions can be anything from new packages to bugfixes, documentation, or even new core features.

Resources:

Contributing

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.

Code of Conduct

Please note that Spack has a Code of Conduct. By participating in the Spack community, you agree to abide by its rules.

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:

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

Description
A flexible package manager that supports multiple versions, configurations, platforms, and compilers.
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