Do you want to provide a changelog (NEWS.md) more informative than “bug fixes and performance improvements” to the users of your package?
Ways to achieve that are:
Update NEWS.md right before release by reading through commit messages. Not necessarily fun!
Update the changelog in every commit e.g. in every PR. Now, if there are several feature PRs around that update the changelog, you’ll have a few clicks to make to tackle conflicts. Easy enough, but potentially annoying.
Use fledge to
NEWS.md for you based on informative commit messages,DESCRIPTION (e.g. useful in bug reports with session information!),Using fledge is a discipline / a few habits that is worth learning!
What you need to do in practice is:
- or * at the beginning of important commit messages e.g. the merge or squash commits that merge a Pull Request. These are the commit messages that’ll be recorded in the changelog eventually! Exclude housekeeping parts of the message by typing them after a line ---.
- Add support for bla databases.
or
- Add support for bla databases.
---
Also tweak the CI workflow accordingly. :sweat_smile:
For informative commit messages refer to the Tidyverse style guide.
Run fledge::bump_version() regularly e.g. before every coffee break or at the end of the day or of the week. If you forgot to merge one PR run fledge::unbump_version(), merge the PR with an informative squash commit message, then run fledge::bump_version() and go drink that coffee!
Run fledge::finalize_version() if you add to edit NEWS.md manually e.g. if you made a typo or are not happy with a phrasing after thinking about it. Even if you edit a lot, what’s been written in by fledge is still a good place-holder.
Follow the recommended steps at release (see vignette("fledge") usage section).
These habits are worth learning!
Install from cynkra’s R-universe using:
install.packages("fledge", repos = "https://cynkra.r-universe.dev")Or install from GitHub using:
devtools::install_github("cynkra/fledge")If you are used to making workflow packages (e.g. devtools) available for all your interactive work, you might enjoy loading fledge in your .Rprofile.
Your package needs to have a remote that indicates the default branch (e.g. GitHub remote) or to be using the same default branch name as your global/project init.defaultbranch.
If your package…
fledge::bump_version() regularly.fledge::bump_version() and then fledge::finalize_version().Add a mention of fledge usage in your contributing guide, as contributors might not know about it. A comment is added to the top of NEWS.md, but it tends to be ignored occasionally.
{fledge} consists of the following functions that enable versioning at different stages through the package development lifecycle.
| Function Name | Description | Stage Applicable |
|---|---|---|
bump_version(which) |
Increments the package version based on argument. (Version format supported major.minor.dev.patch) | Configuration, Development, Release |
finalize_version() |
Finalize the package version | Configuration, Development |
commit_version() |
Commits NEWS.md and DESCRIPTION to Git. |
Release |
tag_version() |
Parses NEWS.md and creates/updates the tag for the most recent version. |
Release |
update_news() |
Update NEWS.md with messages from top level commits |
Used by bump_version()
|
update_version() |
Update NEWS.md and DESCRIPTION with a new version |
Used by bump_version()
|
The following sections show how to combine these functions at different stages with any R package on GitHub. All {fledge} commands should be issued from the package directory of the target R package.
{fledge} assumes that the target R package is version-controlled with Git in a dedicated repository. The following steps are required to set up {fledge} for first time use, with your package.
Call bump_version() as given below to set the package version
fledge::bump_version()Edit NEWS.md if required (typo fixes, rephrasing, grouping).
Call finalize_version() as given below to update NEWS.md
fledge::finalize_version()You are all set to switch to the development stage now. Ensure that you use bullet points (* or -) in your commit or merge messages to indicate the messages that you want to include in NEWS.md. Use finalize_version(push = TRUE) to push to the remote repository (e.g. GitHub) in one swoop.
{fledge} aims to update NEWS.md and DESCRIPTION correctly whenever a new version is assigned. In order to do this, the following steps need to be included throughout the development workflow.
In commit messages to your main branch (typically main or master), mark everything that should go to NEWS.md with a bullet point (- or *). This is applicable to single commits, merge commits, or squash commits from pull requests. Do not edit NEWS.md manually.
When you want to assign a version number to the current state of your R package e.g. at the end of the day or before a break, call
fledge::bump_version()The default argument for bump_version is “dev”. So the dev part of the version number will be updated. It is good practice to assign a new version number before switching focus to another project.
Edit NEWS.md if required (typo fixes, rephrasing, grouping).
Call finalize_version(): fledge::finalize_version(). This achieves the following:
NEWS.md is now composed, based on the most recent commit messages. To understand how NEWS.md is updated by fledge, see the section on NEWS.md implementation.usethis::use_version()).NEWS.md messages included in the tag’s message.When you want to release your package to CRAN, follow the steps below:
Call bump_version() with the appropriate argument ("patch", "major", "minor"). e.g.,
fledge::bump_version("patch")Edit NEWS.md, convert the “change log” to “release notes” – a higher-level description of features and bug fixes (typo fixes, rephrasing, grouping).
Call commit_version() as below
fledge::commit_version()Make any necessary adjustments before releasing to CRAN depending on results of preparatory / incoming checks.
Once the release/changes have been accepted by CRAN, use the following calls to tag the released version and to switch to a development version immediately.
fledge::tag_version()
fledge::bump_version()Return to development mode!
At least we think these questions could be asked. Feel free to also ask us questions!
You still can!
The best moment is between bump_version() and finalize_version(push = TRUE).
You can actually edit at any time, but only between those two calls the text in the changelog will be captured in the tag message, which is better for the tag history.
If someone opens a PR, with fledge the information about the changes should be entered in the message for the merge or squash commit. Now you could still advise contributors to provide a summary of the change as a comment to the PR.
If you want to fix an issue with a commit message you can
- Adds support for coolness (#42, @contributor).
---
Fix #42If you rebase after creating a tag, you need to call finalize_version() to make sure the tag is moved to the mainline branch.
If you pushed via finalize_version(push = TRUE) or git push, the tag may have been pushed as well. In this case, invoke
(where x.y.z.9www is the new version) to delete the newly created remote tag. This is the reason why {fledge} only tags "dev" releases automatically. Other releases always must be tagged manually with tag_version().