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rust2rpm/README.md
Fabio Valentini 53d07c28ad
Drop false claims of support Python 3.8 or 3.9 
Recent changes (in particular, use of the new "structural pattern
matching" syntax, which was introduced in Python 3.10) were already
incompatible with Python <3.10, but neither the tox settings nor
the project metadata had been updated to reflect this fact.

Fedora 35, the oldest currently supported branch of Fedora, already
ships with Python 3.10 by default, so we don't drop support for any
current Fedora releases.
2022-07-23 19:41:48 +02:00

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rust2rpm

rust2rpm is a tool for automatically generating RPM spec files for Rust crates.

rust2rpm.conf

If it is present, a rust2rpm.conf configuration file is read by rust2rpm to override some aspects of the automatic spec file generation.

This file can be committed to dist-git to ensure that these settings will be applied for future updates of a crate package, as well.

The file follows a slightly modified ini syntax. It supports sections for default settings ([DEFAULT]) and target-specific settings (i.e. [fedora]).

These configuration options are available right now:

  • all-features: enable all cargo features when generating BuildRequires, building the crate, and running cargo tests (defaults to false; setting this value to true is equivalent to supplying the --all-features CLI flag)
  • unwanted-features: features or optional dependencies for which no +feature subpackage should be generated (for example, dependencies on Rust compiler internals for crates that are also bundled with Rust itself)
  • buildrequires: additional build dependencies that must be installed for the package to build correctly (i.e., pkgconfig(foo) for the foo-sys crate)
  • lib.requires: additional build dependencies that must be installed for the crate to build correctly as a dependency of another crate (usually, this contains the same values as the buildrequires option)
  • lib+foo.requires: additional build dependencies that must be installed for the crate to build correctly as a dependency of another crate if it has enabled the optional foo feature
  • bin.requires: additional runtime dependencies of the binary application that is built from this crate
[DEFAULT]
unwanted-features =
  compiler_builtins
  rustc-dep-of-std
buildrequires =
  pkgconfig(foo) >= 1.2.3
lib.requires =
  pkgconfig(foo) >= 1.2.3

[fedora]
bin.requires =
  findutils
buildrequires =
lib.requires =
lib+default.requires =
  pkgconfig(bar) >= 2.0.0

Note that features and optional dependencies that are marked as unwanted-features must not be dependencies of other Cargo features that are not marked "unwanted" as well. Failing to consider transitive dependencies will lead to broken dependencies of generated rust-foo+bar-devel packages and / or errors when generating spec files with rust2rpm.

Testing

Invoking tox will automatically run the test suite on all python versions that should be supported.

Use python -m pytest -v or PYTHONPATH=. pytest -v in the source tree (possibly within a virtualenv) to run the tests manually.