VCS: remove code for old VCS support

This PR removes the code for old VCS support. Besides, it touches the
documentation slightly to remove mentions to particular VCS (Mercurial, Bazaar,
SVN). However, it doesn't re-write all parts of the documentation where we are
using "VCS" in a generic way. There should be another PR that re-phrase those
senteces to mention Git directly.

Related:
* #11147
* #8840
* https://about.readthedocs.com/blog/2024/02/drop-support-for-subversion-mercurial-bazaar/

README.rst

@@ -6,54 +6,52 @@ Welcome to Read the Docs
 Purpose
 -------
 
-`Read the Docs`_ hosts documentation for the open source community. It supports
-Sphinx_ docs written with reStructuredText_, and can pull from your Subversion_,
-Bazaar_, Git_, and Mercurial_ repositories.
+`Read the Docs`_ hosts documentation for the open source community.
+It supports many documentation tools
+(e.g. Sphinx_ docs written with reStructuredText_, MkDocs_ docs written with markdown_, among others),
+and can pull Git_ repositories.
 Then we build documentation and host it for you.
-Think of it as *Continuous Documentation*.
+Think of it as *Continuous Documentation*, or Docs as Code.
 
 .. _Read the docs: https://readthedocs.org/
 .. _Sphinx: http://www.sphinx-doc.org/
 .. _reStructuredText: http://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html
-.. _Subversion: http://subversion.tigris.org/
-.. _Bazaar: http://bazaar.canonical.com/
 .. _Git: http://git-scm.com/
-.. _Mercurial: https://www.mercurial-scm.org/
+.. _MkDocs: https://www.mkdocs.org/
+.. _markdown: https://daringfireball.net/projects/markdown/
 
-Documentation for RTD
----------------------
+Documentation for Read the Docs
+-------------------------------
 
-You will find complete documentation for setting up your project at `the Read
-the Docs site`_.
+You will find complete documentation for setting up your project at `the Read the Docs site`_.
 
 .. _the Read the Docs site: https://docs.readthedocs.io/
 
 Get in touch
 ------------
 
-You can find information about getting in touch with Read the Docs at our `Contribution page <https://docs.readthedocs.io/en/latest/contribute.html#get-in-touch>`_.
+You can find information about getting in touch with Read the Docs at our
+`Contribution page <https://docs.readthedocs.io/en/latest/contribute.html#get-in-touch>`_.
 
 Contributing
 ------------
 
-You can find information about contributing to Read the Docs at our `Contribution page <https://docs.readthedocs.io/en/latest/contribute.html>`_.
+You can find information about contributing to Read the Docs at our
+`Contribution page <https://docs.readthedocs.io/en/latest/contribute.html>`_.
 
 Quickstart for GitHub hosted projects
 -------------------------------------
 
-By the end of this quickstart, you will have a new project automatically updated
-when you push to GitHub.
+By the end of this quickstart, you will have a new project automatically updated when you push to GitHub.
 
-#. Create an account on `Read the Docs`_.  You will get an email verifying your
-   email address which you should accept within 7 days.
-
-#. Log in and click on "Import a Project".
-
-#. Click "Connect to GitHub" in order to connect your account's repositories to GitHub.
+#. Create an account on `Read the Docs`_ by signing up with GitHub.
 
 #. When prompted on GitHub, give access to your account.
 
-#. Click "Import a Repository" and select any desired repository.
+#. Log in and click on "Add project".
+
+#. Start typing the name of your repository and select it from the list,
+   and click "Continue".
 
 #. Change any information if desired and click "Next".
 

docs/user/guides/setup/git-repo-manual.rst

@@ -186,13 +186,9 @@ For example, the cURL command to build the ``dev`` branch, using the token
     curl -X POST -d "branches=dev" -d "token=1234" -d "default_branch=main"
     https://readthedocs.org/api/v2/webhook/example-project/1/
 
-A command like the one above could be called from a cron job or from a hook
-inside Git_, Subversion_, Mercurial_, or Bazaar_.
+A command like the one above could be called from a cron job or from a `Git hook`_.
 
-.. _Git: http://www.kernel.org/pub/software/scm/git/docs/githooks.html
-.. _Subversion: https://www.mikewest.org/2006/06/subversion-post-commit-hooks-101
-.. _Mercurial: http://hgbook.red-bean.com/read/handling-repository-events-with-hooks.html
-.. _Bazaar: http://wiki.bazaar.canonical.com/BzrHooks
+.. _Git hook: http://www.kernel.org/pub/software/scm/git/docs/githooks.html
 
 Authentication
 ^^^^^^^^^^^^^^

docs/user/intro/import-guide.rst

@@ -41,10 +41,8 @@ project, you will be asked for the repository URL, along with some other
 information for your new project. The URL is normally the URL or path name you'd
 use to checkout, clone, or branch your repository. Some examples:
 
-* Git: ``https://github.com/ericholscher/django-kong.git``
-* Mercurial: ``https://bitbucket.org/ianb/pip``
-* Subversion: ``http://varnish-cache.org/svn/trunk``
-* Bazaar: ``lp:pasta``
+* ``https://github.com/ericholscher/django-kong.git``
+* ``https://gitlab.com/gitlab-org/gitlab``
 
 Add an optional homepage URL and some tags, and then click **Next**.
 

docs/user/versions.rst

@@ -4,8 +4,8 @@ Versions
 Read the Docs supports multiple versions of your repository.
 On initial import,
 we will create a ``latest`` version.
-This will point at the default branch defined in your VCS control
-(by default, ``main`` on Git and ``default`` in Mercurial).
+This will point at the default branch defined in your Git repository.
+(by default, ``main``).
 
 If your project has any tags or branches with a name following `semantic versioning <https://semver.org/>`_,
 we also create a ``stable`` version, tracking your most recent release.
@@ -133,19 +133,6 @@ Read the Docs supports two workflows for versioning: based on tags or branches.
 If you have at least one tag,
 tags will take preference over branches when selecting the stable version.
 
-Version Control Support Matrix
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-+------------+------------+-----------+------------+-----------+
-|            |    git     |    hg     |   bzr      |     svn   |
-+============+============+===========+============+===========+
-| Tags       |    Yes     |    Yes    |   Yes      |    No     |
-+------------+------------+-----------+------------+-----------+
-| Branches   |    Yes     |    Yes    |   Yes      |    No     |
-+------------+------------+-----------+------------+-----------+
-| Default    |    master  |   default |            |    trunk  |
-+------------+------------+-----------+------------+-----------+
-
 Version warning
 ---------------
 

readthedocs/api/v3/tests/test_projects.py

@@ -395,7 +395,7 @@ def test_update_project(self):
             "name": "Updated name",
             "repository": {
                 "url": "https://bitbucket.com/rtfd/updated-repository",
-                "type": "hg",
+                "type": "git",
             },
             "language": "es",
             "programming_language": "js",
@@ -429,7 +429,7 @@ def test_update_project(self):
         self.assertEqual(
             self.project.repo, "https://bitbucket.com/rtfd/updated-repository"
         )
-        self.assertEqual(self.project.repo_type, "hg")
+        self.assertEqual(self.project.repo_type, "git")
         self.assertEqual(self.project.language, "es")
         self.assertEqual(self.project.programming_language, "js")
         self.assertEqual(self.project.project_url, "https://updated-homepage.org")

readthedocs/builds/models.py

@@ -105,8 +105,7 @@ class Version(TimeStampedModel):
     # used by the vcs backend
 
     #: The identifier is the ID for the revision this is version is for.
-    #: This might be the revision number (e.g. in SVN),
-    #: or the commit hash (e.g. in Git).
+    #: This is the commit hash (e.g. in Git).
     #: If the this version is pointing to a branch,
     #: then ``identifier`` will contain the branch name.
     #: `None`/`null` means it will use the VCS default branch.

readthedocs/doc_builder/director.py

@@ -266,8 +266,7 @@ def checkout(self):
         if "image" not in build_config_key and "os" not in build_config_key:
             raise BuildUserError(BuildUserError.BUILD_OS_REQUIRED)
 
-        if self.vcs_repository.supports_submodules:
-            self.vcs_repository.update_submodules(self.data.config)
+        self.vcs_repository.update_submodules(self.data.config)
 
     # System dependencies (``build.apt_packages``)
     # NOTE: `system_dependencies` should not be possible to override by the

readthedocs/oauth/models.py

@@ -150,7 +150,7 @@ class RemoteRepository(TimeStampedModel):
         max_length=512,
         blank=True,
         validators=[
-            URLValidator(schemes=["http", "https", "ssh", "git", "svn"]),
+            URLValidator(schemes=["http", "https", "ssh", "git"]),
         ],
     )
     html_url = models.URLField(_("HTML URL"), null=True, blank=True)

readthedocs/projects/constants.py

@@ -81,16 +81,8 @@
 )
 
 REPO_TYPE_GIT = "git"
-REPO_TYPE_SVN = "svn"
-REPO_TYPE_HG = "hg"
-REPO_TYPE_BZR = "bzr"
 
-REPO_CHOICES = (
-    (REPO_TYPE_GIT, _("Git")),
-    (REPO_TYPE_SVN, _("Subversion")),
-    (REPO_TYPE_HG, _("Mercurial")),
-    (REPO_TYPE_BZR, _("Bazaar")),
-)
+REPO_CHOICES = ((REPO_TYPE_GIT, _("Git")),)
 
 PUBLIC = "public"
 PRIVATE = "private"

readthedocs/projects/tasks/builds.py

@@ -233,12 +233,7 @@ def execute(self):
                 verbose_name=self.data.version.verbose_name,
                 version_type=self.data.version.type,
             )
-            if not vcs_repository.supports_lsremote:
-                log.info("Syncing repository via full clone.")
-                vcs_repository.update()
-            else:
-                log.info("Syncing repository via remote listing.")
-
+            log.info("Syncing repository via remote listing.")
             self.sync_versions(vcs_repository)
 
 

readthedocs/projects/tasks/mixins.py

@@ -41,28 +41,12 @@ def sync_versions(self, vcs_repository):
         # and just validate them trigger the task. All the other logic should
         # be done by the BuildDirector or the VCS backend. We should not
         # check this here and do not depend on ``vcs_repository``.
-        sync_tags = vcs_repository.supports_tags and not self.data.project.has_feature(
-            Feature.SKIP_SYNC_TAGS
+        sync_tags = not self.data.project.has_feature(Feature.SKIP_SYNC_TAGS)
+        sync_branches = not self.data.project.has_feature(Feature.SKIP_SYNC_BRANCHES)
+        branches, tags = vcs_repository.lsremote(
+            include_tags=sync_tags,
+            include_branches=sync_branches,
         )
-        sync_branches = (
-            vcs_repository.supports_branches
-            and not self.data.project.has_feature(Feature.SKIP_SYNC_BRANCHES)
-        )
-        tags = []
-        branches = []
-        if vcs_repository.supports_lsremote:
-            branches, tags = vcs_repository.lsremote(
-                include_tags=sync_tags,
-                include_branches=sync_branches,
-            )
-
-        # Remove this block once we drop support for Bazaar, SVG and Mercurial.
-        # Since we will only support Git, lsremote will be always available.
-        else:
-            if sync_tags:
-                tags = vcs_repository.tags
-            if sync_branches:
-                branches = vcs_repository.branches
 
         tags_data = [
             {

readthedocs/rtd_tests/tests/projects/test_version_sorting.py

@@ -3,12 +3,7 @@
 
 from readthedocs.builds.constants import BRANCH, LATEST
 from readthedocs.builds.models import Version
-from readthedocs.projects.constants import (
-    REPO_TYPE_BZR,
-    REPO_TYPE_GIT,
-    REPO_TYPE_HG,
-    REPO_TYPE_SVN,
-)
+from readthedocs.projects.constants import REPO_TYPE_GIT
 from readthedocs.projects.models import Project
 from readthedocs.projects.templatetags.projects_tags import sort_version_aware
 
@@ -143,73 +138,3 @@ def test_sort_git_master_and_latest(self):
             ["master", "latest", "2.0", "1.10", "1.9", "1.1", "1.0"],
             [v.slug for v in sort_version_aware(versions)],
         )
-
-    def test_sort_hg_default(self):
-        identifiers = ["default", "1.0", "2.0", "1.1", "1.9", "1.10"]
-        self.project.repo_type = REPO_TYPE_HG
-        self.project.save()
-        self.project.versions.get(slug=LATEST).delete()
-
-        for identifier in identifiers:
-            get(
-                Version,
-                project=self.project,
-                type=BRANCH,
-                identifier=identifier,
-                verbose_name=identifier,
-                slug=identifier,
-            )
-
-        versions = list(Version.objects.filter(project=self.project))
-        self.assertEqual(
-            ["default", "2.0", "1.10", "1.9", "1.1", "1.0"],
-            [v.slug for v in sort_version_aware(versions)],
-        )
-
-    def test_sort_bzr_latest(self):
-        """
-        BZR doesn't have a name for "master",
-        so here master gets sorted by its ascii value.
-        """
-        identifiers = ["master", "1.0", "2.0", "1.1", "1.9", "1.10"]
-        self.project.repo_type = REPO_TYPE_BZR
-        self.project.save()
-        self.project.versions.get(slug=LATEST).delete()
-
-        for identifier in identifiers:
-            get(
-                Version,
-                project=self.project,
-                type=BRANCH,
-                identifier=identifier,
-                verbose_name=identifier,
-                slug=identifier,
-            )
-
-        versions = list(Version.objects.filter(project=self.project))
-        self.assertEqual(
-            ["2.0", "1.10", "1.9", "1.1", "1.0", "master"],
-            [v.slug for v in sort_version_aware(versions)],
-        )
-
-    def test_sort_svn_trunk(self):
-        identifiers = ["/trunk/", "1.0", "2.0", "1.1", "1.9", "1.10"]
-        self.project.repo_type = REPO_TYPE_SVN
-        self.project.save()
-        self.project.versions.get(slug=LATEST).delete()
-
-        for identifier in identifiers:
-            get(
-                Version,
-                project=self.project,
-                type=BRANCH,
-                identifier=identifier,
-                verbose_name=identifier,
-                slug=identifier,
-            )
-
-        versions = list(Version.objects.filter(project=self.project))
-        self.assertEqual(
-            ["/trunk/", "2.0", "1.10", "1.9", "1.1", "1.0"],
-            [v.slug for v in sort_version_aware(versions)],
-        )