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ReleaseTools for GAP packages

The scripts in this repository along with this README are meant to help GAP package authors with the process of making new releases of their packages. The problem with making releases is that it is quite easy to forget steps, which can cause a lot of extra work if you later need to correct that. Moreover, if one only makes a release once a year, it is easy to forget how this works -- making the release process an often unwelcome and tiresome process.

The goal of this document and the tools shipped with it is to help GAP package authors to automate this process as much as possible, so that making a fresh release of a package becomes a quick and painless undertaking.

These tools are for now focused on making releases for packages hosted on GitHub, and which are using the GitHub release system as well as GitHub pages for the package homepage.

Initial setup

The following steps should be performed once on your package repository. After that, you can follow the instructions in the next section to make a release.

  1. Make sure your package source code is hosted on GitHub, say under https://github.com/USER/FOOBAR where FOOBAR is the name of your package. We will from now on refer to USER/FOOBAR as the "repository" of your package.

  2. Setup GitHubPagesForGAP for your package, as described in its README.

  3. Adjust your PackageInfo.g file to use GitHub. This may require adjusting PackageWWWHome, README_URL, PackageInfoURL, ArchiveURL. An easy way to do that is to use the following in your PackageInfo.g. It assumes that your package name is equal to the repository name; note that case matters.

    SourceRepository := rec(
        Type := "git",
        URL := Concatenation( "https://github.com/gap-packages/", ~.PackageName ),
    ),
    IssueTrackerURL := Concatenation( ~.SourceRepository.URL, "/issues" ),
    PackageWWWHome  := Concatenation( "https://gap-packages.github.io/", ~.PackageName ),
    README_URL      := Concatenation( ~.PackageWWWHome, "/README" ),
    PackageInfoURL  := Concatenation( ~.PackageWWWHome, "/PackageInfo.g" ),
    ArchiveURL      := Concatenation( ~.SourceRepository.URL,
                                     "/releases/download/v", ~.Version,
                                     "/", ~.PackageName ,"-", ~.Version ),
    
  4. Make sure to also update your README, you package manual etc. to use the correct URLs.

  5. Optionally: Provide a makedoc.g which regenerates your package manual. If you are using GAPDoc, often the AutoDoc package provides an easy way for doing this, as in the following example (however, you do not have to use AutoDoc for this at all):

    LoadPackage("AutoDoc", "2014.03.27");
    SetPackagePath("FOOBAR", ".");
    AutoDoc("FOOBAR");
    QUIT;
    

    As a fallback, we also looks for a doc/make_doc executable. If found, we assume the package is not using GAPDoc, but rather still uses a manual based on the gapmacro TeX macros. We then execute the make_doc script from inside the doc directory, and copy relevant files.

The release process

Suppose we want to release version 1.2.3 of a package named FOOBAR. Suppose furthermore that directory foo contains a clone of the repository.

  1. Make sure we are on the right branch and have the latest version.

    cd foo && git checkout master && git pull
    

    You should also verify that there are no uncommitted local changes, and if there are, either commit them or remove them.

  2. Update the version and release date in PackageInfo.g.

  3. If you are not using AutoDoc to generating the title page of your package manual, also adjust the release date and version in your manual (typically this means doc/FOOBAR.xml).

    If you are using AutoDoc for this, make sure to run it now:

    gap -A makedoc.g
    
  4. Make sure that any other files containing the version and release date are updated (e.g. a CHANGES with release notes).

  5. Commit all your changes to PackageInfo.g, VERSION, documentation, etc., e.g.:

    git commit --all -m "Version 1.2.3"
    
  6. Tag the release (this is required for the GitHub release system), and push your changes

    git tag v1.2.3
    git push
    

    Note: By default, ReleaseTools assume tag names of the form vVERSION. You can override this, if you want, but we recommend using the default.

  7. Create the release using the release script included here:

    PATH/TO/ReleaseTools/release
    

    If this does not work, please refer to the section discussing release.

  8. Verify that everything went fine by visiting https://github.com/USER/FOOBAR/releases/tag/v1.2.3 and https://USER.github.com/FOOBAR

    In particular, test the release archives created by the previous step. If you are unhappy with the outcome, or for some other reason decide that you need more changes, do these and go back and repeat previous steps as necessary (in step 7, you now need to pass "--force" to git tag, git push and the release tool)

  9. Update the website:

    cd gh-pages && git push
    

    Note that release will also do this for you if you call it with the --push option.

That's it. You should now be able to see the new version on https://USER.github.com/FOOBAR and also be able to view the manual there, download the new version etc. Moreover https://USER.github.com/FOOBAR/PackageInfo.g should be up-to-date. So if the GAP server already has this registered as location of your PackageInfo.g, it should now automatically detect that you made a release, and pull it into the next GAP package bundle.

The release script

This tool helps you create release archives of your GAP package in a clean and controlled way, and publish them on GitHub.

Again, we assume you are working on version 1.2.3 or package FOOBAR.

Invoking the release script

You normally invoke release as follows from inside a clone of your package repository:

PATH/TO/ReleaseTools/release

This scans your PackageInfo.g for the package name and version, and uses that to guess the release tag.

By default, the script assumes that you tagged your release with a tag named vVERSION (so v1.2.3 in our example). If you prefer to use other tag names, you can specify this as parameter, e.g.

PATH/TO/ReleaseTools/release --tag VER-1-2-3

Note that the release tool will attempt to verify your tag by checking it against the ArchiveURL in your PackageInfo.g.

TODO: describe other options

What it does

The release script does multiple things for you:

  1. It creates archive files in a subdirectory tmp of the current directory. For now, it knows how to create .tar.gz, .tar.bz2 and .zip files. Which it creates depends on the ArchiveFormats field of your PackageInfo.g.

    The files by default are tmp/PACKAGENAME-VERSION.tar.gz etc., so in our example we would get

    • tmp/FOOBAR-1.2.3.tar.gz
    • tmp/FOOBAR-1.2.3.tar.bz2
    • tmp/FOOBAR-1.2.3.zip

    However, the script also look at the ArchiveURL field of your PackageInfo.g to decide if a different basename was chosen. So if you prefer the archives to be called

    • tmp/foobar-1.2.3.tar.gz
    • tmp/foobar-1.2.3.tar.bz2
    • tmp/foobar-1.2.3.zip

    then you can achieve this by editing your PackageInfo.g.

    To create these archives, release uses git archive to export precisely the files in your repository present in the commit tagged v1.2.3. This ensures that only files that are present in your repository will be added, no more, no less; and that no stray local changes are included by accident.

    After exporting all files, a few more steps are performed: a. It removes any .gitignore, .gitmodules files. b. If a script autogen.sh is present, it is executed. c. If a file makedoc.g is present, it is executed. Various files like doc/*.aux are removed afterwards. d. Otherwise, if a file doc/make_doc is present, it is executed. Various files like doc/*.aux are removed afterwards.

  2. It uploads the created files to GitHub for you.

    TODO: Describe details

  3. It updates various files in the gh-pages subdirectory to help you with updating the website. In particular, it copies the PackageInfo.g and README to gh-pages, and also copies the HTML version of the manual it just built for the release archives to gh-pages/doc. Finally, it runs the update.g script to regenerate gh-pages/_data/package.yml.

GitHub access token

The release script needs limited write access to your repository in order to upload the release archives for you. For this, you need to generate a so-called GitHub access token. To generate one, please follow the instructions on https://help.github.com/articles/creating-an-access-token-for-command-line-use

When creating the token, you will have to select which "scopes" it is for. The only scope needed by the release scrips it the repo scope.

Packages using the ReleaseTools

Packages that are (mostly) following the release process outlined here include the following:

TODO

Contact

Please submit bug reports, suggestions for improvements and patches via the issue tracker.

You can also contact me directly via email.

Copyright (c) 2013-2016 Max Horn

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