Make RPM files from python releases

Imagined as a drop-in replacement for setuptools’s bdist_rpm command (being deprecated), this package does much of the same things than pyp2rpm does, except simpler. In particular all the parsing of dependencies, package build systems, versions, etc. is done by external libraries, such as packaging and pep517.

At its simplest:

$ pysrpm package-release.tar.gz

or

$ pysrpm package-source-directory/

Configuration

You can override any options from the command line, see pysrpm --help for a full list. The system is building the specfile purely by interpolating (possibly inherited) templates. With time, more system-specific templates will be available. You can choose them with the flavour option, e.g.:

$ pysrpm --flavour fedora package-release.tar.gz

or

$ cat pysrpm.cfg
[pysrpm]
flavour = fedora
$ pysrpm --config pysrpm.cfg package-release.tar.gz

Templating

Most configurability is done through config files however, that can be provided on the command line, or options can be fecthed from the project’s setup.cfg (under [pysrpm] and [pysrpm.*]), or the project’s pyproject.toml (under tool.pysrpm).

Any new sections under pysrpm can become a new flavour, and can inherit from any existing template. E.g. in a project’s setup.cfg:

[pysrpm]
flavour = add_post
[pysrpm.add_post]
# Pick a parent (defaults to base if absent)
inherits = base
# Add a post script
post =
	rm -rf $$$$RPM_BUILD_ROOT

See presets/00-base.conf for an explanation of available parameters.

Currently there are no other presents than the base template, but specialisations can be added if needed, for example for platforms that are stuck on older rpm versions.

Escaping characters

To make templates extendable, interpolation is used. This means some characters need to be protected (by doubling them) if they aren’t meant as interpolation.

Up to 3 levels of expansion can happen:

• templates are evaluating as python, which requires escaping any { and }
• this project uses configparser ExtendedInterpolation notation, i.e. ${key} or ${section:key}, which requires escaping $
• RPM uses %{macro} for its macros, which requires escaping %
• setup.cfg uses configparser BasicInterpolation notation, i.e. %(key)s interpolation, which requires escaping % if using the project’s setup.cfg
• pyproject.toml has backslahes for double quotes in double-quoted strings, which requires escaping \ if using double-quoted strings in toml

Here are a couple of examples:

RPM dependency and automatic generation

Dependencies can be extracted automatically from the package metadata, but only for python packages. Expressing complex dependency requirements − especially conditional ones − may be a little shaky currently. Dependencies on other python packages are expressed by default as python3Xdist(package) with X the version. This is controlled by the python_package template − see presets/00-base.conf for more options.

Dependencies can also be specified by the requires and suggests template entries.