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rust2rpm/README.md
Fabio Valentini 4b93531d5f
Allow setting the "all-features" setting in rust2rpm.conf 
This new setting works the same way as the `--all-features` CLI flag
when set to `true`. This makes it possible to set it to `true` permanently,
without having to remember to use the CLI flag when running rust2rpm.
2022-06-06 21:37:00 +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.