fedmod provides tools for working with Fedora's modulemd metadata format that aren't related to actually building them (for build commands, see fedpkg and mbs-build).
Currently, this consists of:
fedmod <query-command>: simple repoquery-like commands providing operations like listing modules, resolving dependencies for packages, finding out where a certain package is, etc. See the user docs for a full list of available query subcommands.
fedmod rpm2module: generates a draft modulemd file based on the given RPM name (multiple RPM names can be given, but the resulting draft module will lack any descriptive metadata in that case)
fedmod fetch-metadata: download the F27 package and module metadata needed to generate draft module definitions (the metadata sets to use are not yet configurable)
fedmod is not yet available from the main Fedora repos, but can be installed
$ sudo dnf copr enable @modularity/fedmod $ sudo dnf install fedmod $ fedmod fetch-metadata $ fedmod rpm2module graphite-web
This will generate a draft
modulemd file for Fedora's
package on stdout.
See the local development instructions below for info on running directly
from a local development clone with
Please see the User docs of fedmod modularity tools.
The preferred dependency management tool for development is
$ pipenv --three --site-packages $ PIP_IGNORE_INSTALLED=1 pipenv install --dev
PIP_IGNORE_INSTALLED=1 setting means that everything available to
will be installed into the virtual environment based on
Pipfile.lock, and only
components that aren't installable with
pip will be used from the system
Some dependencies aren't currently available from PyPI, and hence need to be installed system-wide:
$ sudo dnf install python3-solv
pipenv itself isn't packaged for Fedora yet, so the recommended bootstrapping
approach is to use the "pip script installer",
$ sudo dnf install pipsi $ pipsi install pew $ pipsi install pipenv
This will create a pair of isolated virtual environments in your home directory
pipenv and the tool it uses for virtual environment
pew. These can later be updated to newer versions using
$ pipsi upgrade pew $ pipsi upgrade pipenv
pipsi list command will list all packages installed via
and the commands they provide)
After setting up the
pipenv environment, the development version can be
run as follows
$ pipenv run fedmod fetch-metadata $ pipenv run fedmod rpm2module graphite-web
Alternatively, start an interactive shell as described below for running the
fedmod will refer to the development version.
After going through the environment setup steps above, start a shell that's
correctly configured to run the tests with
fedmod and all of its
$ pipenv shell
The metadata needed by the module generator tests can then be installed with
$ fedmod fetch-metadata
The tests can then be run in the launched subshell with:
$ pytest tests
To test the package build process, tox is also supported:
$ tox -e py36
To see the Python level dependencies graph:
$ pew toggleglobalsitepackages $ pipenv graph $ pew toggleglobalsitepackages
(If you don't turn off global site-packages access first, you'll get the dependency graph of all the installed system Python components as well)
While the default development environment is managed with
pipenv for a more
consistent cross-platform development experience,
fedmod is intended to
support installation as a system package in Fedora 26 and later.
A specific tox environment is provided to enable this testing:
$ tox -e system
The only component this installs into the environment is
fedmod itself: all
other dependencies must be available as Python 3 system packages.
Unlike the regular test environment, this environment also implicitly runs
fedmod fetch-metadata in order to ensure that the metadata fetching operation
also works correctly given only system packages as dependencies.
The main current release mechanism is through COPR at https://copr.fedorainfracloud.org/coprs/g/modularity/fedmod/.
This is configured to automatically build a new release every time a new tag
is pushed to the
fedmod git repository.
fedmod's RPMs are built with
tito, but version tagging is handled with a
helper script. To publish a new release, run:
$ ./tag-release.sh <X.Y.Z> $ git push && git push --tags
fedmod is also published to PyPI here: https://pypi.org/project/fedmod/
After releasing to COPR to ensure everything is properly tagged, a new PyPI release can be made by doing:
$ cd src $ rm dist/* $ python setup.py sdist bdist_wheel $ twine upload dist/*
solv dependencies unfortunately mean the PyPI release isn't
particularly useful at this point (
pipsi doesn't allow system level
dependencies, and even if it did, platforms that provide these libraries are
also likely to provide access to COPR).