pdm-bump

A small PEP440 compliant bump utility for PDM, the Python Development Master.

Why?

As of PEP621, the pyproject.toml supports project metadata including a project version. If you are using the PDM build backend (according to PEP517), you can also use a file provider that contains your version, which is often referred to as a dynamic version.

The project version itself must comply to PEP440, which tells us, that it must consist of

• an optional epoch
• a mandatory major version part
• a mandatory minor version part
• a mandatory micro version part
• an optional pre-release part supporting alpha, beta or release-candidate part.

Tools like bumpversion or bump2version use their own configuration and might not conform to the PEP440 specification.

Installation

You can install it using either pip (pip install [--user] pdm-bump) or using the PDM CLI (pdm self add [--pip-args=--user] pdm-bump).

Usage

You can use it the following way:

$ grep version= pyproject.toml
version=0.1.0
$ pdm bump pre-release --pre alpha # creates 0.1.1a1 from 0.1.0
$ pdm bump pre-release --pre beta # creates 0.1.1.b1 from 0.1.1a1
$ pdm bump pre-release --pre release-candidate # creates 0.1.1rc1 from 0.1.1b1
$ pdm bump no-pre-release # creates 0.1.1 from 0.1.1rc1
$ pdm bump micro # creates 0.1.2 from 0.1.1
$ pdm bump minor # creates 0.2.0 from 0.1.2
$ pdm bump major # creates 1.0.0 from 0.2.0

Migrating from poetry

If you used to work with poetry, the pdm bump plugin will actually include all the commands that you are used to work with in the poetry version command.

So you can actually use the following commands in the same way:

poetry version	pdm bump	Remarks
major	major	No 1:1 implementation, but compatible behavior
minor	minor	No 1:1 implementation, but compatible behavior
patch	patch, micro	No 1:1 implementation, but compatible behavior
premajor	premajor	Implemented according to poetry documentation
preminor	preminor	Implemented according to poetry documentation
prepatch	prepatch	Implemented according to poetry documentation
prerelease	prerelease	Implemented according to poetry documentation

Hence, replacing poetry version with pdm bump should be sufficient with pdm-bump v0.8.0 onwards.

VCS based actions

NOTE: Currently, only git is supported as VCS provider. It requires git(.exe) to be available on your PATH. Hence the configuration key git-cli.

You can create tags based on your pyproject.toml version (or dynamic version) using the following command.

$ pdm bump tag # creates a git tag with a leading v

Semantic versioning and conventional commits

If you are using conventional commits, pdm bump can analyze your commit history up to the most recent tag. This history will be categorized upon the commit subjects, i.e. the first line of the commit. These categorized commits will then be handed over to a policy that will suggest a new version.

Currently, an approach for a semantic version v2 is implemented.

The implementation is as follows:

• Features, Performance Tweaks and Refactorings will trigger a minor upgrade
• Chore, Documentation and Bugfixes will trigger a micro (or patch) upgrade
• Any other commit will trigger a post upgrade
• Breaking changes will trigger a major upgrade

The highest rating will win.

$ grep version= pyproject.toml
version=0.1.0
$ git log $(git describe --tags --abbrev=0)..HEAD --format=%s
fix: Formatting is erroneous
$ pdm bump suggest
Would suggest a new version of 0.1.1
$ # some more commits
$ git log $(git describe --tags --abbrev=0)..HEAD --format=%s
fix: Formatting is erroneous
build: corrected PDM scripts
chore: Updated 3 dependencies
$ pdm bump suggest
Would suggest a new version of 0.1.1
$ # some more commits
$ git log $(git describe --tags --abbrev=0)..HEAD --format=%s
fix: Formatting is erroneous
build: corrected PDM scripts
chore: Updated 3 dependencies
feat: Added a new formatter
$ pdm bump suggest
Would suggest a new version of 0.2.0
$

If you agree with it, you can use pdm bump auto to set the new version. Add parameter -c to create a commit of your version file automatically.

Configuration

In your pdm.toml, you can add the following configuration values:

Table plugins.bump

Name	Type	Description	ENV_VAR	CLI Parameter	Default Value
commit_msg_tpl	str	The default commit message. Uses templates 'from' and 'to'.		-m, --message	cf. below
perform_commit	bool	If set to true, commit the bumped changes automatically		-c, --commit	False
auto_tag	bool	Create a tag after bumping and committing the changes		-t, --tag	False
tag_add_prefix	bool	Adds the prefix v to the version tag		--no-prepend-v (Note: This inverts the logic)	True
allow_dirty	bool	Allows tagging the project, if it is dirty		-d, --dirty	False
provider	str	"Configures the VCS Provider to use.	PDM_PLUGINS_BUMP_VCS_PROVIDER		git-cli

The default commit message template is set to:

chore: Bump version {from} to {to}

Created a commit with a new version {to}.
Previous version was {from}.

You can only use the variables from representing the previous version and to representing the new version.

Contributing

Feel free to submit issues and pull requests. Contributions are welcome.

Pre-checks

1. Tests: To run the tests for your current checks, run pdm run pytest.
2. tox: If you are using pyenv you can use pdm run tox to run the tests for all supported Python versions.
3. Code Style: You can use pdm check-style to check code format.
4. Format: You can use pdm format to format your code.
5. Commit messages: You can run pdm check-commits to run gitlint on your commit messages.

Before opening a Pull Request make sure that the quality gates are passed.