Backport PR #12347: What's new in 7.15+ Reproducible build working

tools/retar.py

@@ -0,0 +1,60 b''
+"""
+Un-targz and retargz a targz file to ensure reproducible build. 
+
+usage: 
+
+    $ export SOURCE_DATE_EPOCH=$(date +%s)
+    ...
+    $ python retar.py <tarfile.gz>
+
+The process of creating an sdist can be non-reproducible:
+  - directory created during the process get a mtime of the creation date; 
+  - gziping files embed the timestamp of fo zip creation. 
+
+This will untar-retar; ensuring that all mtime > SOURCE_DATE_EPOCH will be set
+equal to SOURCE_DATE_EPOCH.
+
+"""
+
+import tarfile
+import sys
+import os
+import gzip
+import io
+
+if len(sys.argv) > 2:
+    raise ValueError("Too many arguments")
+
+
+timestamp = int(os.environ["SOURCE_DATE_EPOCH"])
+
+old_buf = io.BytesIO()
+with open(sys.argv[1], "rb") as f:
+    old_buf.write(f.read())
+old_buf.seek(0)
+old = tarfile.open(fileobj=old_buf, mode="r:gz")
+
+buf = io.BytesIO()
+new = tarfile.open(fileobj=buf, mode="w", format=tarfile.GNU_FORMAT)
+for i, m in enumerate(old):
+    data = None
+    # mutation does not work, copy
+    if m.name.endswith('.DS_Store'):
+        continue
+    m2 = tarfile.TarInfo(m.name)
+    m2.mtime = min(timestamp, m.mtime)
+    m2.size = m.size
+    m2.type = m.type
+    m2.linkname = m.linkname
+    if m.isdir():
+        data = old.extractfile(m)
+        new.addfile(m2, data)
+    else:
+        new.addfile(m2)
+new.close()
+old.close()
+
+buf.seek(0)
+with open(sys.argv[1], "wb") as f:
+    with gzip.GzipFile('', "wb", fileobj=f, mtime=timestamp) as gzf:
+        gzf.write(buf.read())

docs/source/coredev/index.rst

@@ -1,303 +1,320 b''
 .. _core_developer_guide:
 
 =================================
 Guide for IPython core Developers
 =================================
 
 This guide documents the development of IPython itself.  Alternatively,
 developers of third party tools and libraries that use IPython should see the
 :doc:`../development/index`.
 
 
 For instructions on how to make a developer install see :ref:`devinstall`.
 
 Backporting Pull requests
 =========================
 
 All pull requests should usually be made against ``master``, if a Pull Request
 need to be backported to an earlier release; then it should be tagged with the
 correct ``milestone``.
 
 If you tag a pull request with a milestone **before** merging the pull request,
 and the base ref is ``master``, then our backport bot should automatically create
 a corresponding pull-request that backport on the correct branch.
 
 If you have write access to the IPython repository you can also just mention the
 **backport bot** to do the work for you. The bot is evolving so instructions may
 be different. At the time of this writing you can use::
 
     @meeseeksdev[bot] backport [to] <branchname>
 
 The bot will attempt to backport the current pull-request and issue a PR if
 possible. 
 
 .. note::
 
     The ``@`` and ``[bot]`` when mentioning the bot should be optional and can
     be omitted.
 
 If the pull request cannot be automatically backported, the bot should tell you
 so on the PR and apply a "Need manual backport" tag to the origin PR.
 
 .. _release_process:
 
 IPython release process
 =======================
 
 This document contains the process that is used to create an IPython release.
 
 Conveniently, the ``release`` script in the ``tools`` directory of the ``IPython``
 repository automates most of the release process. This document serves as a
 handy reminder and checklist for the release manager.
 
 During the release process, you might need the extra following dependencies:
 
  - ``keyring`` to access your GitHub authentication tokens
  - ``graphviz`` to generate some graphs in the documentation
  - ``ghpro`` to generate the stats
 
 Make sure you have all the required dependencies to run the tests as well.
 
 You can try to ``source tools/release_helper.sh`` when releasing via bash, it 
 should guide you through most of the process.
 
 
 1. Set Environment variables
 ----------------------------
 
 Set environment variables to document previous release tag, current
 release milestone, current release version, and git tag.
 
 These variables may be used later to copy/paste as answers to the script
 questions instead of typing the appropriate command when the time comes. These
 variables are not used by the scripts directly; therefore, there is no need to
 ``export`` them. The format for bash is as follows, but note that these values
 are just an example valid only for the 5.0 release; you'll need to update them
 for the release you are actually making::
 
     PREV_RELEASE=4.2.1
     MILESTONE=5.0
     VERSION=5.0.0
     BRANCH=master
 
+For `reproducibility of builds <https://reproducible-builds.org/specs/source-date-epoch/>`_,
+we recommend setting ``SOURCE_DATE_EPOCH`` prior to running the build; record the used value
+of ``SOURCE_DATE_EPOCH`` as it may not be available from build artifact. You
+should be able to use ``date +%s`` to get a formatted timestamp::
+
+    SOURCE_DATE_EPOCH=$(date +%s)
+
 
 2. Create GitHub stats and finish release note
 ----------------------------------------------
 
 .. note::
 
     This step is optional if making a Beta or RC release.
 
 .. note::
 
     Before generating the GitHub stats, verify that all closed issues and pull
     requests have `appropriate milestones
     <https://github.com/ipython/ipython/wiki/Dev:-GitHub-workflow#milestones>`_.
     `This search
     <https://github.com/ipython/ipython/issues?q=is%3Aclosed+no%3Amilestone+is%3Aissue>`_
     should return no results before creating the GitHub stats.
 
 If a major release:
 
     - merge any pull request notes into what's new::
 
           python tools/update_whatsnew.py
 
     - update ``docs/source/whatsnew/development.rst``, to ensure it covers
       the major release features
 
     - move the contents of ``development.rst`` to ``versionX.rst`` where ``X`` is
       the numerical release version
 
     - generate summary of GitHub contributions, which can be done with::
 
           python tools/github_stats.py --milestone $MILESTONE > stats.rst
 
       which may need some manual cleanup of ``stats.rst``. Add the cleaned
       ``stats.rst`` results to ``docs/source/whatsnew/github-stats-X.rst``
       where ``X`` is the numerical release version (don't forget to add it to
       the git repository as well). If creating a major release, make a new
       ``github-stats-X.rst`` file; if creating a minor release, the content
       from ``stats.rst`` may simply be added to the top of an existing
       ``github-stats-X.rst`` file.
 
     - Edit ``docs/source/whatsnew/index.rst`` to list the new ``github-stats-X``
       file you just created.
 
     - You do not need to temporarily remove the first entry called
       ``development``, nor re-add it after the release, it will automatically be
       hidden when releasing a stable version of IPython (if ``_version_extra``
       in ``release.py`` is an empty string.
 
       Make sure that the stats file has a header or it won't be rendered in
       the final documentation.
 
 To find duplicates and update `.mailmap`, use::
 
     git log --format="%aN <%aE>" $PREV_RELEASE... | sort -u -f
 
 If a minor release you might need to do some of the above points manually, and
 forward port the changes.
 
 3. Make sure the repository is clean
 ------------------------------------
 
 of any file that could be problematic.
    Remove all non-tracked files with:
 
    .. code::
 
        git clean -xfdi
 
    This will ask for confirmation before removing all untracked files. Make
    sure the ``dist/`` folder is clean to avoid any stale builds from
    previous build attempts.
 
 
 4. Update the release version number
 ------------------------------------
 
 Edit ``IPython/core/release.py`` to have the current version.
 
 in particular, update version number and ``_version_extra`` content in
 ``IPython/core/release.py``.
 
 Step 5 will validate your changes automatically, but you might still want to
 make sure the version number matches pep440.
 
 In particular, ``rc`` and ``beta`` are not separated by ``.`` or the ``sdist``
 and ``bdist`` will appear as different releases. For example, a valid version
 number for a release candidate (rc) release is: ``1.3rc1``. Notice that there
 is no separator between the '3' and the 'r'. Check the environment variable
 ``$VERSION`` as well.
 
 You will likely just have to modify/comment/uncomment one of the lines setting
 ``_version_extra``
 
 
 5. Run the `tools/build_release` script
 ---------------------------------------
 
 Running ``tools/build_release`` does all the file checking and building that
 the real release script will do. This makes test installations, checks that
 the build procedure runs OK, and tests other steps in the release process.
 
 The ``build_release`` script will in particular verify that the version number
 match PEP 440, in order to avoid surprise at the time of build upload.
 
 We encourage creating a test build of the docs as well. 
 
 6. Create and push the new tag
 ------------------------------
 
 Commit the changes to release.py::
 
     git commit -am "release $VERSION" -S
     git push origin $BRANCH
 
 (omit the ``-S`` if you are no signing the package)
 
 Create and push the tag::
 
     git tag -am "release $VERSION" "$VERSION" -s
     git push origin $VERSION
 
 (omit the ``-s`` if you are no signing the package)
 
 Update release.py back to ``x.y-dev`` or ``x.y-maint`` commit and push::
 
     git commit -am "back to development" -S
     git push origin $BRANCH
 
 (omit the ``-S`` if you are no signing the package)
 
 Now checkout the tag we just made::
 
     git checkout $VERSION
 
 7. Run the release script
 -------------------------
 
 Run the ``release`` script, this step requires having a current wheel, Python
 >=3.4 and Python 2.7.::
 
     ./tools/release
 
 This makes the tarballs and wheels, and puts them under the ``dist/``
 folder. Be sure to test the ``wheels``  and the ``sdist`` locally before
 uploading them to PyPI. We do not use an universal wheel as each wheel
 installs an ``ipython2`` or ``ipython3`` script, depending on the version of
 Python it is built for. Using an universal wheel would prevent this.
 
+Check the shasum of files with::
+
+    shasum -a 256 dist/*
+
+and takes notes of them you might need them to update the conda-forge recipes.
+Rerun the command and check the hash have not changed::
+
+    ./tools/release
+    shasum -a 256 dist/*
+
 Use the following to actually upload the result of the build::
 
     ./tools/release upload
 
 It should posts them to ``archive.ipython.org`` and to PyPI.
 
 PyPI/Warehouse will automatically hide previous releases. If you are uploading
 a non-stable version, make sure to log-in to PyPI and un-hide previous version.
 
 
 8. Draft a short release announcement
 -------------------------------------
 
 The announcement should include:
 
 - release highlights
 - a link to the html version of the *What's new* section of the documentation
 - a link to upgrade or installation tips (if necessary)
 
 Post the announcement to the mailing list and or blog, and link from Twitter.
 
 .. note::
 
     If you are doing a RC or Beta, you can likely skip the next steps.
 
 9. Update milestones on GitHub
 -------------------------------
 
 These steps will bring milestones up to date:
 
 - close the just released milestone
 - open a new milestone for the next release (x, y+1), if the milestone doesn't
   exist already
 
 10. Update the IPython website
 ------------------------------
 
 The IPython website should document the new release:
 
 - add release announcement (news, announcements)
 - update current version and download links
 - update links on the documentation page (especially if a major release)
 
 11. Update readthedocs
 ----------------------
 
 Make sure to update readthedocs and set the latest tag as stable, as well as
 checking that previous release is still building under its own tag.
 
 12. Update the Conda-Forge feedstock
 ------------------------------------
 
 Follow the instructions on `the repository <https://github.com/conda-forge/ipython-feedstock>`_
 
 13. Celebrate!
 --------------
 
 Celebrate the release and please thank the contributors for their work. Great
 job!
 
 
 
 Old Documentation
 =================
 
 Out of date documentation is still available and have been kept for archival purposes.
 
 .. note::
 
   Developers documentation used to be on the IPython wiki, but are now out of
   date. The wiki is though still available for historical reasons: `Old IPython
   GitHub Wiki.  <https://github.com/ipython/ipython/wiki/Dev:-Index>`_

docs/source/whatsnew/version7.rst

@@ -1,906 +1,990 b''
 ============
  7.x Series
 ============
 
+.. _version 715:
+
+IPython 7.15
+============
+
+IPython 7.15 brings a number of bug fixes and user facing improvements.
+
+Misc Noticeable changes:
+------------------------
+
+ - Long completion name have better elision in terminal :ghpull:`12284`
+ - I've started to test on Python 3.9 :ghpull:`12307` and fix some errors.
+ - Hi DPI scaling of figures when using qt eventloop :ghpull:`12314`
+ - Document the ability to have systemwide configuration for IPython.
+   :ghpull:`12328`
+ - Fix issues with input autoformatting :ghpull:`12336`
+
+Reproducible Build
+------------------
+
+Starting with IPython 7.15, I am attempting to provide reproducible builds,
+that is to say you should be able from the source tree to generate an sdist
+and wheel that are identical byte for byte with the publish version on PyPI.
+
+I've only tested on a couple of machines so far and the process is relatively
+straightforward, so this mean that IPython not only have a deterministic build
+process, but also I have either removed, or put under control all effects of
+the build environments on the final artifact.  I encourage you to attempt the
+build process on your machine as documented in :ref:`core_developer_guide`
+and let me know if you do not obtain an identical artifact.
+
+While reproducible builds is critical to check that the supply chain of (open
+source) software has not been compromised, it can also help to speedup many
+of the build processes in large environment (conda, apt...) by allowing
+better caching of intermediate build steps.
+
+Learn more on `<https://reproducible-builds.org/>`_. `Reflections on trusting
+trust <https://dl.acm.org/doi/10.1145/358198.358210>`_ is also one of the
+cornerstone and recommended reads on this subject.
+
+.. note::
+
+   The build commit from which the sdist is generated is also `signed
+   <https://en.wikipedia.org/wiki/Digital_signature>`_, so you should be able to
+   check it has not been compromised, and the git repository is a `merkle-tree
+   <https://en.wikipedia.org/wiki/Merkle_tree>`_, you can check the consistency
+   with `git-fsck <https://git-scm.com/docs/git-fsck>`_ which you likely `want
+   to enable by default
+   <https://gist.github.com/mbbx6spp/14b86437e794bffb4120>`_.
+
+NEP29: Last version to support Python 3.6
+-----------------------------------------
+
+IPython 7.15 will be the Last IPython version to officially support Python
+3.6, as stated by `NumPy Enhancement Proposal 29
+<https://numpy.org/neps/nep-0029-deprecation_policy.html>`_. Starting with
+next minor version of IPython I may stop testing on Python 3.6 and may stop
+publishing release artifacts that install on Python 3.6
+
+Highlighted features
+--------------------
+
+Highlighted features are not new, but seem to not be widely known, this
+section will help you discover in more narrative form what you can do with
+IPython.
+
+Increase Tab Completion Menu Height
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+In terminal IPython it is possible to increase the hight of the tab-completion
+menu. To do so set the value of
+:configtrait:`TerminalInteractiveShell.space_for_menu`, this will reserve more
+space at the bottom of the screen for various kind of menus in IPython including
+tab completion and searching in history. 
+
+Autoformat Code in the terminal
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+If you have a preferred code formatter, you can configure IPython to
+reformat your code. Set the value of
+:configtrait:`TerminalInteractiveShell.autoformatter` to for example ``'black'``
+and IPython will auto format your code when possible.
+
+
 .. _version 714:
 
 IPython 7.14
 ============
 
 IPython  7.14 is a minor release that fix a couple of bugs and prepare
 compatibility with new or future versions of some libraries. 
 
 Important changes:
 ------------------
 
  - Fix compatibility with Sphinx 3+ :ghpull:`12235`
  - Remove deprecated matplotlib parameter usage, compatibility with matplotlib
    3.3+ :`122250`
 
 Misc Changes
 ------------
 
  - set ``.py`` extension when editing current buffer in vi/emacs. :ghpull:`12167`
  - support for unicode identifiers in ``?``/``??`` :ghpull:`12208`
  - add extra options to the ``Video`` Rich objects :ghpull:`12212`
  - add pretty-printing to ``SimpleNamespace`` :ghpull:`12230`
 
 Pending deprecated imports
 --------------------------
 
 Many object present in ``IPython.core.display`` are there for internal use only,
 and should  already been imported from ``IPython.display`` by users and external
 libraries. Trying to import those from ``IPython.core.display`` is still possible
 but will trigger a
 deprecation warning in later versions of IPython and will become errors in the
 future. 
 
 This will simplify compatibility with other Python kernels (like Xeus-Python),
 and simplify code base. 
 
 
 
 
 .. _version 713:
 
 IPython 7.13
 ============
 
 IPython 7.13 is the final release of the 7.x branch since master is diverging
 toward an 8.0. Exiting new features have already been merged in 8.0 and will
 not be available on the 7.x branch. All the changes below have been backported
 from the master branch.
 
 
  - Fix inability to run PDB when inside an event loop :ghpull:`12141`
  - Fix ability to interrupt some processes on windows :ghpull:`12137`
  - Fix debugger shortcuts :ghpull:`12132`
  - improve tab completion when inside a string by removing irrelevant elements :ghpull:`12128`
  - Fix display of filename tab completion when the path is long :ghpull:`12122`
  - Many removal of Python 2 specific code path :ghpull:`12110`
  - displaying wav files do not require NumPy anymore, and is 5x to 30x faster :ghpull:`12113`
 
 See the list of all closed issues and pull request on `github
 <https://github.com/ipython/ipython/pulls?q=is%3Aclosed+milestone%3A7.13>`_.
 
 .. _version 712:
 
 IPython 7.12
 ============
 
 IPython 7.12 is a minor update that mostly brings code cleanup, removal of
 longtime deprecated function and a couple update to documentation cleanup as well.
 
 Notable changes are the following:
 
  - Exit non-zero when ipython is given a file path to run that doesn't exist :ghpull:`12074`
  - Test PR on ARM64 with Travis-CI :ghpull:`12073`
  - Update CI to work with latest Pytest :ghpull:`12086`
  - Add infrastructure to run ipykernel eventloop via trio :ghpull:`12097`
  - Support git blame ignore revs :ghpull:`12091`
  - Start multi-line ``__repr__`` s on their own line :ghpull:`12099`
 
 .. _version 7111:
 
 IPython 7.11.1
 ==============
 
 A couple of deprecated functions (no-op) have been reintroduces in py3compat as
 Cython was still relying on them, and will be removed in a couple of versions.
 
 .. _version 711:
 
 IPython 7.11
 ============
 
 IPython 7.11 received a couple of compatibility fixes and code cleanup.
 
 A number of function in the ``py3compat`` have been removed; a number of types
 in the IPython code base are now non-ambiguous and now always ``unicode``
 instead of ``Union[Unicode,bytes]``; many of the relevant code path have thus
 been simplified/cleaned and types annotation added.
 
 IPython support several verbosity level from exceptions. ``xmode plain`` now
 support chained exceptions. :ghpull:`11999`
 
 We are starting to remove ``shell=True`` in some usages of subprocess. While not directly
 a security issue (as IPython is made to run arbitrary code anyway) it is not good
 practice and we'd like to show the example. :ghissue:`12023`. This discussion
 was started by ``@mschwager`` thanks to a new auditing tool they are working on
 with duo-labs (`dlint <https://github.com/duo-labs/dlint>`_).
 
 Work around some bugs in Python 3.9 tokenizer :ghpull:`12057`
 
 IPython will now print its version after a crash. :ghpull:`11986`
 
 This is likely the last release from the 7.x series that will see new feature.
 The master branch will soon accept large code changes and thrilling new
 features; the 7.x branch will only start to accept critical bug fixes, and
 update dependencies.
 
 .. _version 7102:
 
 IPython 7.10.2
 ==============
 
 IPython 7.10.2 fix a couple of extra incompatibility between IPython, ipdb,
 asyncio and Prompt Toolkit 3.
 
 .. _version 7101:
 
 IPython 7.10.1
 ==============
 
 IPython 7.10.1 fix a couple of incompatibilities with Prompt toolkit 3 (please
 update Prompt toolkit to 3.0.2 at least), and fixes some interaction with
 headless IPython.
 
 .. _version 7100:
 
 IPython 7.10.0
 ==============
 
 IPython 7.10 is the first double digit minor release in the  last decade, and
 first since the release of IPython 1.0, previous double digit minor release was
 in August 2009.
 
 We've been trying to give you regular release on the last Friday of every month
 for a guaranty of rapid access to bug fixes and new features.
 
 Unlike the previous first few releases that have seen only a couple of code
 changes, 7.10 bring a number of changes, new features and bugfixes.
 
 Stop Support for Python 3.5 – Adopt NEP 29
 ------------------------------------------
 
 IPython has decided to follow the informational `NEP 29
 <https://numpy.org/neps/nep-0029-deprecation_policy.html>`_ which layout a clear
 policy as to which version of (C)Python and NumPy are supported.
 
 We thus dropped support for Python 3.5, and cleaned up a number of code path
 that were Python-version dependant. If you are on 3.5 or earlier pip should
 automatically give you the latest compatible version of IPython so you do not
 need to pin to a given version.
 
 Support for Prompt Toolkit 3.0
 ------------------------------
 
 Prompt Toolkit 3.0 was release a week before IPython 7.10 and introduces a few
 breaking changes. We believe IPython 7.10 should be compatible with both Prompt
 Toolkit 2.x and 3.x, though it has not been extensively tested with 3.x so
 please report any issues.
 
 
 Prompt Rendering Performance improvements
 -----------------------------------------
 
 Pull Request :ghpull:`11933` introduced an optimisation in the prompt rendering
 logic that should decrease the resource usage of IPython when using the
 _default_ configuration but could potentially introduce a regression of
 functionalities if you are using a custom prompt.
 
 We know assume if you haven't changed the default keybindings that the prompt
 **will not change** during the duration of your input – which is for example
 not true when using vi insert mode that switches between `[ins]` and `[nor]`
 for the current mode.
 
 If you are experiencing any issue let us know.
 
 Code autoformatting
 -------------------
 
 The IPython terminal can now auto format your code just before entering a new
 line or executing a command. To do so use the
 ``--TerminalInteractiveShell.autoformatter`` option and set it to ``'black'``;
 if black is installed IPython will use black to format your code when possible.
 
 IPython cannot always properly format your code; in particular it will
 auto formatting with *black* will only work if:
 
    - Your code does not contains magics or special python syntax.
 
    - There is no code after your cursor.
 
 The Black API is also still in motion; so this may not work with all versions of
 black.
 
 It should be possible to register custom formatter, though the API is till in
 flux.
 
 Arbitrary Mimetypes Handing in Terminal (Aka inline images in terminal)
 -----------------------------------------------------------------------
 
 When using IPython terminal it is now possible to register function to handle
 arbitrary mimetypes. While rendering non-text based representation was possible in
 many jupyter frontend; it was not possible in terminal IPython, as usually
 terminal are limited to displaying text. As many terminal these days provide
 escape sequences to display non-text; bringing this loved feature to IPython CLI
 made a lot of sens. This functionality will not only allow inline images; but
 allow opening of external program; for example ``mplayer`` to "display" sound
 files.
 
 So far only the hooks necessary for this are in place, but no default mime
 renderers added; so inline images will only be available via extensions. We will
 progressively enable these features by default in the next few releases, and
 contribution is welcomed.
 
 We welcome any feedback on the API. See :ref:`shell_mimerenderer` for more
 informations.
 
 This is originally based on work form in :ghpull:`10610` from @stephanh42
 started over two years ago, and still a lot need to be done.
 
 MISC
 ----
 
  - Completions can define their own ordering :ghpull:`11855`
  - Enable Plotting in the same cell than the one that import matplotlib
    :ghpull:`11916`
  - Allow to store and restore multiple variables at once :ghpull:`11930`
 
 You can see `all pull-requests <https://github.com/ipython/ipython/pulls?q=is%3Apr+milestone%3A7.10+is%3Aclosed>`_ for this release.
 
 API Changes
 -----------
 
 Change of API and exposed objects automatically detected using `frappuccino <https://pypi.org/project/frappuccino/>`_ (still in beta):
 
 The following items are new in IPython 7.10::
 
     + IPython.terminal.shortcuts.reformat_text_before_cursor(buffer, document, shell)
     + IPython.terminal.interactiveshell.PTK3
     + IPython.terminal.interactiveshell.black_reformat_handler(text_before_cursor)
     + IPython.terminal.prompts.RichPromptDisplayHook.write_format_data(self, format_dict, md_dict='None')
 
 The following items have been removed in 7.10::
 
     - IPython.lib.pretty.DICT_IS_ORDERED
 
 The following signatures differ between versions::
 
     - IPython.extensions.storemagic.restore_aliases(ip)
     + IPython.extensions.storemagic.restore_aliases(ip, alias='None')
 
 Special Thanks
 --------------
 
  - @stephanh42 who started the work on inline images in terminal 2 years ago
  - @augustogoulart who spent a lot of time triaging issues and responding to
    users.
  - @con-f-use who is my (@Carreau) first sponsor on GitHub, as a reminder if you
    like IPython, Jupyter and many other library of the SciPy stack you can
    donate to numfocus.org non profit
 
 .. _version 790:
 
 IPython 7.9.0
 =============
 
 IPython 7.9 is a small release with a couple of improvement and bug fixes.
 
  - Xterm terminal title should be restored on exit :ghpull:`11910`
  - special variables ``_``,``__``, ``___`` are not set anymore when cache size
    is 0 or less.  :ghpull:`11877`
  - Autoreload should have regained some speed by using a new heuristic logic to
    find all objects needing reload. This should avoid large objects traversal
    like pandas dataframes. :ghpull:`11876`
  - Get ready for Python 4. :ghpull:`11874`
  - `%env` Magic now has heuristic to hide potentially sensitive values :ghpull:`11896`
 
 This is a small release despite a number of Pull Request Pending that need to
 be reviewed/worked on. Many of the core developers have been busy outside of
 IPython/Jupyter and we thanks all contributor for their patience; we'll work on
 these as soon as we have time.
 
 
 .. _version780:
 
 IPython 7.8.0
 =============
 
 IPython 7.8.0 contain a few bugfix and 2 new APIs:
 
  - Enable changing the font color for LaTeX rendering :ghpull:`11840`
  - and Re-Expose some PDB API (see below)
 
 Expose Pdb API
 --------------
 
 Expose the built-in ``pdb.Pdb`` API. ``Pdb`` constructor arguments are generically
 exposed, regardless of python version.
 Newly exposed arguments:
 
 - ``skip`` - Python 3.1+
 - ``nosiginnt`` - Python 3.2+
 - ``readrc`` - Python 3.6+
 
 Try it out::
 
     from IPython.terminal.debugger import TerminalPdb
     pdb = TerminalPdb(skip=["skipthismodule"])
 
 
 See :ghpull:`11840`
 
 .. _version770:
 
 IPython 7.7.0
 =============
 
 IPython 7.7.0 contain multiple bug fixes and documentation updates; Here are a
 few of the outstanding issue fixed:
 
    - Fix a bug introduced in 7.6 where the ``%matplotlib`` magic would fail on
      previously acceptable arguments :ghpull:`11814`.
    - Fix the manage location on freebsd :ghpull:`11808`.
    - Fix error message about aliases after ``%reset`` call in ipykernel
      :ghpull:`11806`
    - Fix Duplication completions in emacs :ghpull:`11803`
 
 We are planning to adopt `NEP29 <https://github.com/numpy/numpy/pull/14086>`_
 (still currently in draft) which may make this minor version of IPython the
 last one to support Python 3.5 and will make the code base more aggressive
 toward removing compatibility with older versions of Python.
 
 GitHub now support to give only "Triage" permissions to users; if you'd like to
 help close stale issues and labels issues please reach to us with your GitHub
 Username and we'll add you to the triage team. It is a great way to start
 contributing and a path toward getting commit rights.
 
 .. _version761:
 
 IPython 7.6.1
 =============
 
 IPython 7.6.1 contain a critical bugfix in the ``%timeit`` magic, which would
 crash on some inputs as a side effect of :ghpull:`11716`. See :ghpull:`11812`
 
 
 .. _whatsnew760:
 
 IPython 7.6.0
 =============
 
 IPython 7.6.0 contains a couple of bug fixes and number of small features
 additions as well as some compatibility with the current development version of
 Python 3.8.
 
    - Add a ``-l`` option to :magic:`psearch` to list the available search
      types. :ghpull:`11672`
    - Support ``PathLike`` for ``DisplayObject`` and ``Image``. :ghpull:`11764`
    - Configurability of timeout in the test suite for slow platforms.
      :ghpull:`11756`
    - Accept any casing for matplotlib backend. :ghpull:`121748`
    - Properly skip test that requires numpy to be installed :ghpull:`11723`
    - More support for Python 3.8 and positional only arguments (pep570)
      :ghpull:`11720`
    - Unicode names for the completion are loaded lazily on first use which
      should decrease startup time. :ghpull:`11693`
    - Autoreload now update the types of reloaded objects; this for example allow
      pickling of reloaded objects. :ghpull:`11644`
    - Fix a bug where ``%%time`` magic would suppress cell output. :ghpull:`11716`
 
 
 Prepare migration to pytest (instead of nose) for testing
 ---------------------------------------------------------
 
 Most of the work between 7.5 and 7.6 was to prepare the migration from our
 testing framework to pytest. Most of the test suite should now work by simply
 issuing ``pytest`` from the root of the repository.
 
 The migration to pytest is just at its beginning. Many of our test still rely
 on IPython-specific plugins for nose using pytest (doctest using IPython syntax
 is one example of this where test appear as "passing", while no code has been
 ran). Many test also need to be updated like ``yield-test`` to be properly
 parametrized tests.
 
 Migration to pytest allowed me to discover a number of issues in our test
 suite; which was hiding a number of subtle issues – or not actually running
 some of the tests in our test suite – I have thus corrected many of those; like
 improperly closed resources; or used of deprecated features. I also made use of
 the ``pytest --durations=...`` to find some of our slowest test and speed them
 up (our test suite can now be up to 10% faster). Pytest as also a variety of
 plugins and flags which will make the code quality of IPython and the testing
 experience better.
 
 Misc
 ----
 
 We skipped the release of 7.6 at the end of May, but will attempt to get back
 on schedule. We are starting to think about making introducing backward
 incompatible change and start the 8.0 series.
 
 Special Thanks to Gabriel (@gpotter2 on GitHub), who among other took care many
 of the remaining task for 7.4 and 7.5, like updating the website.
 
 .. _whatsnew750:
 
 IPython 7.5.0
 =============
 
 IPython 7.5.0 consist mostly of bug-fixes, and documentation updates, with one
 minor new feature. The `Audio` display element can now be assigned an element
 id when displayed in browser. See :ghpull:`11670`
 
 The major outstanding bug fix correct a change of behavior that was introduce
 in 7.4.0 where some cell magics would not be able to access or modify global
 scope when using the ``@needs_local_scope`` decorator. This was typically
 encountered with the ``%%time`` and ``%%timeit`` magics. See :ghissue:`11659`
 and :ghpull:`11698`.
 
 .. _whatsnew740:
 
 IPython 7.4.0
 =============
 
 Unicode name completions
 ------------------------
 
 Previously, we provided completion for a unicode name with its relative symbol.
 With this, now IPython provides complete suggestions to unicode name symbols.
 
 As on the PR, if user types ``\LAT<tab>``, IPython provides a list of
 possible completions. In this case, it would be something like::
 
    'LATIN CAPITAL LETTER A',
    'LATIN CAPITAL LETTER B',
    'LATIN CAPITAL LETTER C',
    'LATIN CAPITAL LETTER D',
    ....
 
 This help to type unicode character that do not have short latex aliases, and
 have long unicode names. for example ``Ͱ``, ``\GREEK CAPITAL LETTER HETA``.
 
 This feature was contributed by Luciana Marques :ghpull:`11583`.
 
 Make audio normalization optional
 ---------------------------------
 
 Added 'normalize' argument to `IPython.display.Audio`. This argument applies
 when audio data is given as an array of samples. The default of `normalize=True`
 preserves prior behavior of normalizing the audio to the maximum possible range.
 Setting to `False` disables normalization.
 
 
 Miscellaneous
 -------------
 
  - Fix improper acceptation of ``return`` outside of functions. :ghpull:`11641`.
  - Fixed PyQt 5.11 backwards incompatibility causing sip import failure.
    :ghpull:`11613`.
  - Fix Bug where ``type?`` would crash IPython. :ghpull:`1608`.
  - Allow to apply ``@needs_local_scope`` to cell magics for convenience.
    :ghpull:`11542`.
 
 .. _whatsnew730:
 
 IPython 7.3.0
 =============
 
 .. _whatsnew720:
 
 IPython 7.3.0 bring several bug fixes and small improvements that you will
 described bellow. 
 
 The biggest change to this release is the implementation of the ``%conda`` and
 ``%pip`` magics, that will attempt to install packages in the **current
 environment**. You may still need to restart your interpreter or kernel for the
 change to be taken into account, but it should simplify installation of packages
 into remote environment. Installing using pip/conda from the command line is
 still the prefer method.
 
 The ``%pip`` magic was already present, but was only printing a warning; now it
 will actually forward commands to pip. 
 
 Misc bug fixes and improvements:
 
  - Compatibility with Python 3.8.
  - Do not expand shell variable in execution magics, and added the
    ``no_var_expand`` decorator for magic requiring a similar functionality
    :ghpull:`11516`
  - Add ``%pip`` and ``%conda`` magic :ghpull:`11524`
  - Re-initialize posix aliases after a ``%reset`` :ghpull:`11528`
  - Allow the IPython command line to run ``*.ipynb`` files :ghpull:`11529`
 
 IPython 7.2.0
 =============
 
 IPython 7.2.0 brings minor bugfixes, improvements, and new configuration options:
 
  - Fix a bug preventing PySide2 GUI integration from working :ghpull:`11464`
  - Run CI on Mac OS ! :ghpull:`11471`
  - Fix IPython "Demo" mode. :ghpull:`11498`
  - Fix ``%run`` magic  with path in name :ghpull:`11499`
  - Fix: add CWD to sys.path *after* stdlib :ghpull:`11502`
  - Better rendering of signatures, especially long ones. :ghpull:`11505`
  - Re-enable jedi by default if it's installed :ghpull:`11506`
  - Add New ``minimal`` exception reporting mode (useful for educational purpose). See :ghpull:`11509`
 
 
 Added ability to show subclasses when using pinfo and other utilities
 ---------------------------------------------------------------------
 
 When using ``?``/``??`` on a class, IPython will now list the first 10 subclasses.
 
 Special Thanks to Chris Mentzel of the Moore Foundation for this feature. Chris
 is one of the people who played a critical role in IPython/Jupyter getting
 funding.
 
 We are grateful for all the help Chris has given us over the years,
 and we're now proud to have code contributed by Chris in IPython.
 
 OSMagics.cd_force_quiet configuration option
 --------------------------------------------
 
 You can set this option to force the %cd magic to behave as if ``-q`` was passed:
 ::
 
     In [1]: cd /
     /
 
     In [2]: %config OSMagics.cd_force_quiet = True
 
     In [3]: cd /tmp
 
     In [4]:
 
 See :ghpull:`11491`
 
 In vi editing mode, whether the prompt includes the current vi mode can now be configured
 -----------------------------------------------------------------------------------------
 
 Set the ``TerminalInteractiveShell.prompt_includes_vi_mode`` to a boolean value
 (default: True) to control this feature. See :ghpull:`11492`
 
 .. _whatsnew710:
 
 IPython 7.1.0
 =============
 
 IPython 7.1.0 is the first minor release after 7.0.0 and mostly brings fixes to
 new features, internal refactoring, and fixes for regressions that happened during the 6.x->7.x
 transition. It also brings **Compatibility with Python 3.7.1**, as we're
 unwillingly relying on a bug in CPython.
 
 New Core Dev:
 
  - We welcome Jonathan Slenders to the commiters. Jonathan has done a fantastic
    work on prompt_toolkit, and we'd like to recognise his impact by giving him
    commit rights. :ghissue:`11397`
 
 Notable Changes
 
  - Major update of "latex to unicode" tab completion map (see below)
 
 Notable New Features:
 
  - Restore functionality and documentation of the **sphinx directive**, which
    is now stricter (fail on error by daefault), has new configuration options,
    has a brand new documentation page :ref:`ipython_directive` (which needs
    some cleanup). It is also now *tested* so we hope to have less regressions.
    :ghpull:`11402`
 
  - ``IPython.display.Video`` now supports ``width`` and ``height`` arguments,
    allowing a custom width and height to be set instead of using the video's
    width and height. :ghpull:`11353`
 
  - Warn when using ``HTML('<iframe>')`` instead of ``IFrame`` :ghpull:`11350`
 
  - Allow Dynamic switching of editing mode between vi/emacs and show
    normal/input mode in prompt when using vi. :ghpull:`11390`. Use ``%config
    TerminalInteractiveShell.editing_mode = 'vi'`` or ``%config
    TerminalInteractiveShell.editing_mode = 'emacs'`` to dynamically switch
    between modes.
 
 
 Notable Fixes:
 
  - Fix entering of **multi-line blocks in terminal** IPython, and various
    crashes in the new input transformation machinery :ghpull:`11354`,
    :ghpull:`11356`, :ghpull:`11358`. These also fix a **Compatibility bug
    with Python 3.7.1**.
 
  - Fix moving through generator stack in ipdb :ghpull:`11266`
 
  - %Magic command arguments now support quoting. :ghpull:`11330`
 
  - Re-add ``rprint`` and ``rprinte`` aliases. :ghpull:`11331`
 
  - Remove implicit dependency on ``ipython_genutils`` :ghpull:`11317`
 
  - Make ``nonlocal`` raise ``SyntaxError`` instead of silently failing in async
    mode. :ghpull:`11382`
 
  - Fix mishandling of magics and ``= !`` assignment just after a dedent in
    nested code blocks :ghpull:`11418`
 
  - Fix instructions for custom shortcuts :ghpull:`11426`
 
 
 Notable Internals improvements:
 
  - Use of ``os.scandir`` (Python 3 only) to speed up some file system operations.
    :ghpull:`11365`
 
  - use ``perf_counter`` instead of ``clock`` for more precise
    timing results with ``%time`` :ghpull:`11376`
 
 Many thanks to all the contributors and in particular to ``bartskowron`` and
 ``tonyfast`` who handled some pretty complicated bugs in the input machinery. We
 had a number of first time contributors and maybe hacktoberfest participants that
 made significant contributions and helped us free some time to focus on more
 complicated bugs.
 
 You
 can see all the closed issues and Merged PR, new features and fixes `here
 <https://github.com/ipython/ipython/issues?utf8=%E2%9C%93&q=+is%3Aclosed+milestone%3A7.1+>`_.
 
 Unicode Completion update
 -------------------------
 
 In IPython 7.1 the Unicode completion map has been updated and synchronized with
 the Julia language.
 
 Added and removed character characters:
 
  ``\jmath`` (``ȷ``), ``\\underleftrightarrow`` (U+034D, combining) have been
  added, while ``\\textasciicaron`` have been removed
 
 Some sequences have seen their prefix removed:
 
  - 6 characters ``\text...<tab>`` should now be inputed with ``\...<tab>`` directly,
  - 45 characters ``\Elz...<tab>`` should now be inputed with ``\...<tab>`` directly,
  - 65 characters ``\B...<tab>`` should now be inputed with ``\...<tab>`` directly,
  - 450 characters ``\m...<tab>`` should now be inputed with ``\...<tab>`` directly,
 
 Some sequences have seen their prefix shortened:
 
  - 5 characters ``\mitBbb...<tab>`` should now be inputed with ``\bbi...<tab>`` directly,
  - 52 characters ``\mit...<tab>`` should now be inputed with ``\i...<tab>`` directly,
  - 216 characters ``\mbfit...<tab>`` should now be inputed with ``\bi...<tab>`` directly,
  - 222 characters ``\mbf...<tab>`` should now be inputed with ``\b...<tab>`` directly,
 
 A couple of characters had their sequence simplified:
 
  - ``ð``, type ``\dh<tab>``, instead of ``\eth<tab>``
  - ``ħ``, type ``\hbar<tab>``, instead of ``\Elzxh<tab>``
  - ``ɸ``, type ``\ltphi<tab>``, instead of ``\textphi<tab>``
  - ``ϴ``, type ``\varTheta<tab>``, instead of ``\textTheta<tab>``
  - ``ℇ``, type ``\eulermascheroni<tab>``, instead of ``\Eulerconst<tab>``
  - ``ℎ``, type ``\planck<tab>``, instead of ``\Planckconst<tab>``
 
  - U+0336 (COMBINING LONG STROKE OVERLAY), type ``\strike<tab>``, instead of ``\Elzbar<tab>``.
 
 A couple of sequences have been updated:
 
  - ``\varepsilon`` now gives ``ɛ`` (GREEK SMALL LETTER EPSILON) instead of ``ε`` (GREEK LUNATE EPSILON SYMBOL),
  - ``\underbar`` now gives U+0331 (COMBINING MACRON BELOW) instead of U+0332 (COMBINING LOW LINE).
 
 
 .. _whatsnew700:
 
 IPython 7.0.0
 =============
 
 Released Thursday September 27th, 2018
 
 IPython 7 includes major feature improvements.
 This is also the second major version of IPython to support only
 Python 3 – starting at Python 3.4. Python 2 is still community-supported
 on the bugfix only 5.x branch, but we remind you that Python 2 "end of life"
 is on Jan 1st 2020.
 
 We were able to backport bug fixes to the 5.x branch thanks to our backport bot which
 backported more than `70 Pull-Requests
 <https://github.com/ipython/ipython/pulls?page=3&q=is%3Apr+sort%3Aupdated-desc+author%3Aapp%2Fmeeseeksdev++5.x&utf8=%E2%9C%93>`_, but there are still many PRs that required manual work. This is an area of the project where you can easily contribute by looking for `PRs that still need manual backport <https://github.com/ipython/ipython/issues?q=label%3A%22Still+Needs+Manual+Backport%22+is%3Aclosed+sort%3Aupdated-desc>`_
 
 The IPython 6.x branch will likely not see any further release unless critical
 bugs are found.
 
 Make sure you have pip > 9.0 before upgrading. You should be able to update by running:
 
 .. code::
 
     pip install ipython --upgrade
 
 .. only:: ipydev
 
   If you are trying to install or update an ``alpha``, ``beta``, or ``rc``
   version, use pip ``--pre`` flag.
 
   .. code::
 
       pip install ipython --upgrade --pre
 
 
 Or, if you have conda installed: 
 
 .. code::
    
    conda install ipython
 
 
 
 Prompt Toolkit 2.0
 ------------------
 
 IPython 7.0+ now uses ``prompt_toolkit 2.0``. If you still need to use an earlier
 ``prompt_toolkit`` version, you may need to pin IPython to ``<7.0``.
 
 Autowait: Asynchronous REPL
 ---------------------------
 
 Staring with IPython 7.0 on Python 3.6+, IPython can automatically ``await``
 top level code. You should not need to access an event loop or runner
 yourself. To learn more, read the :ref:`autoawait` section of our docs, see
 :ghpull:`11265`, or try the following code::
 
     Python 3.6.0
     Type 'copyright', 'credits' or 'license' for more information
     IPython 7.0.0 -- An enhanced Interactive Python. Type '?' for help.
 
     In [1]: import aiohttp
        ...: result = aiohttp.get('https://api.github.com')
 
     In [2]: response = await result
     <pause for a few 100s ms>
 
     In [3]: await response.json()
     Out[3]:
     {'authorizations_url': 'https://api.github.com/authorizations',
      'code_search_url': 'https://api.github.com/search/code?q={query}{&page,per_page,sort,order}',
     ...
     }
 
 .. note::
 
    Async integration is experimental code, behavior may change or be removed
    between Python and IPython versions without warnings.
 
 Integration is by default with `asyncio`, but other libraries can be configured --
 like ``curio`` or ``trio`` -- to improve concurrency in the REPL::
 
     In [1]: %autoawait trio
 
     In [2]: import trio
 
     In [3]: async def child(i):
        ...:     print("   child %s goes to sleep"%i)
        ...:     await trio.sleep(2)
        ...:     print("   child %s wakes up"%i)
 
     In [4]: print('parent start')
        ...: async with trio.open_nursery() as n:
        ...:     for i in range(3):
        ...:         n.spawn(child, i)
        ...: print('parent end')
     parent start
        child 2 goes to sleep
        child 0 goes to sleep
        child 1 goes to sleep
        <about 2 seconds pause>
        child 2 wakes up
        child 1 wakes up
        child 0 wakes up
     parent end
 
 See :ref:`autoawait` for more information.
 
 
 Asynchronous code in a Notebook interface or any other frontend using the
 Jupyter Protocol will require further updates to the IPykernel package.
 
 Non-Asynchronous code
 ~~~~~~~~~~~~~~~~~~~~~
 
 As the internal API of IPython is now asynchronous, IPython needs to run under
 an event loop. In order to allow many workflows, (like using the :magic:`%run`
 magic, or copy-pasting code that explicitly starts/stop event loop), when
 top-level code is detected as not being asynchronous, IPython code is advanced
 via a pseudo-synchronous runner, and may not advance pending tasks.
 
 Change to Nested Embed
 ~~~~~~~~~~~~~~~~~~~~~~
 
 The introduction of the ability to run async code had some effect on the
 ``IPython.embed()`` API. By default, embed will not allow you to run asynchronous
 code unless an event loop is specified.
 
 Effects on Magics
 ~~~~~~~~~~~~~~~~~
 
 Some magics will not work with async until they're updated.
 Contributions welcome.
 
 Expected Future changes
 ~~~~~~~~~~~~~~~~~~~~~~~
 
 We expect more internal but public IPython functions to become ``async``, and
 will likely end up having a persistent event loop while IPython is running.
 
 Thanks
 ~~~~~~
 
 This release took more than a year in the making.
 The code was rebased a number of
 times; leading to commit authorship that may have been lost in the final
 Pull-Request. Huge thanks to many people for contribution, discussion, code,
 documentation, use-cases: dalejung, danielballan, ellisonbg, fperez, gnestor,
 minrk, njsmith, pganssle, tacaswell, takluyver , vidartf ... And many others.
 
 
 Autoreload Improvement
 ----------------------
 
 The magic :magic:`%autoreload 2 <autoreload>` now captures new methods added to
 classes. Earlier, only methods existing as of the initial import were being
 tracked and updated.  
 
 This new feature helps dual environment development - Jupyter+IDE - where the
 code gradually moves from notebook cells to package files as it gets
 structured.
 
 **Example**: An instance of the class ``MyClass`` will be able to access the
 method ``cube()`` after it is uncommented and the file ``file1.py`` is saved on
 disk.
 
 
 .. code::
 
    # notebook
 
    from mymodule import MyClass
    first = MyClass(5)
 
 .. code::
 
    # mymodule/file1.py
 
    class MyClass:
 
        def __init__(self, a=10):
            self.a = a
 
        def square(self):
            print('compute square')
            return self.a*self.a
 
        # def cube(self):
        #     print('compute cube')
        #     return self.a*self.a*self.a
 
 
 
 
 Misc
 ----
 
 The autoindent feature that was deprecated in 5.x was re-enabled and
 un-deprecated in :ghpull:`11257`
 
 Make :magic:`%run -n -i ... <run>` work correctly. Earlier, if :magic:`%run` was
 passed both arguments, ``-n`` would be silently ignored. See :ghpull:`10308`
 
 
 The :cellmagic:`%%script` (as well as :cellmagic:`%%bash`,
 :cellmagic:`%%ruby`... ) cell magics now raise by default if the return code of
 the given code is non-zero (thus halting execution of further cells in a
 notebook). The behavior can be disable by passing the ``--no-raise-error`` flag.
 
 
 Deprecations
 ------------
 
 A couple of unused functions and methods have been deprecated and will be removed
 in future versions:
 
   - ``IPython.utils.io.raw_print_err``
   - ``IPython.utils.io.raw_print``
 
   
 Backwards incompatible changes
 ------------------------------
 
 * The API for transforming input before it is parsed as Python code has been
   completely redesigned: any custom input transformations will need to be
   rewritten. See :doc:`/config/inputtransforms` for details of the new API.

setup.py

@@ -1,262 +1,262 b''
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 """Setup script for IPython.
 
 Under Posix environments it works like a typical setup.py script.
 Under Windows, the command sdist is not supported, since IPython
 requires utilities which are not available under Windows."""
 
 #-----------------------------------------------------------------------------
 #  Copyright (c) 2008-2011, IPython Development Team.
 #  Copyright (c) 2001-2007, Fernando Perez <[e-mail]>
 #  Copyright (c) 2001, Janko Hauser <[e-mail]>
 #  Copyright (c) 2001, Nathaniel Gray <[e-mail]>
 #
 #  Distributed under the terms of the Modified BSD License.
 #
 #  The full license is in the file COPYING.rst, distributed with this software.
 #-----------------------------------------------------------------------------
 
 from __future__ import print_function
 
 import os
 import sys
 
 # **Python version check**
 #
 # This check is also made in IPython/__init__, don't forget to update both when
 # changing Python version requirements.
 if sys.version_info < (3, 6):
     pip_message = 'This may be due to an out of date pip. Make sure you have pip >= 9.0.1.'
     try:
         import pip
         pip_version = tuple([int(x) for x in pip.__version__.split('.')[:3]])
         if pip_version < (9, 0, 1) :
             pip_message = 'Your pip version is out of date, please install pip >= 9.0.1. '\
             'pip {} detected.'.format(pip.__version__)
         else:
             # pip is new enough - it must be something else
             pip_message = ''
     except Exception:
         pass
 
 
     error = """
 IPython 7.10+ supports Python 3.6 and above, following NEP 29.
 When using Python 2.7, please install IPython 5.x LTS Long Term Support version.
 Python 3.3 and 3.4 were supported up to IPython 6.x.
 Python 3.5 was supported with IPython 7.0 to 7.9.
 
 See IPython `README.rst` file for more information:
 
     https://github.com/ipython/ipython/blob/master/README.rst
 
 Python {py} detected.
 {pip}
 """.format(py=sys.version_info, pip=pip_message )
 
     print(error, file=sys.stderr)
     sys.exit(1)
 
 # At least we're on the python version we need, move on.
 
 # BEFORE importing distutils, remove MANIFEST. distutils doesn't properly
 # update it when the contents of directories change.
 if os.path.exists('MANIFEST'): os.remove('MANIFEST')
 
 from distutils.core import setup
 
 # Our own imports
 from setupbase import target_update
 
 from setupbase import (
     setup_args,
     find_packages,
     find_package_data,
     check_package_data_first,
     find_entry_points,
     build_scripts_entrypt,
     find_data_files,
     git_prebuild,
     install_symlinked,
     install_lib_symlink,
     install_scripts_for_symlink,
     unsymlink,
 )
 
 isfile = os.path.isfile
 pjoin = os.path.join
 
 #-------------------------------------------------------------------------------
 # Handle OS specific things
 #-------------------------------------------------------------------------------
 
 if os.name in ('nt','dos'):
     os_name = 'windows'
 else:
     os_name = os.name
 
 # Under Windows, 'sdist' has not been supported.  Now that the docs build with
 # Sphinx it might work, but let's not turn it on until someone confirms that it
 # actually works.
 if os_name == 'windows' and 'sdist' in sys.argv:
     print('The sdist command is not available under Windows.  Exiting.')
     sys.exit(1)
 
 
 #-------------------------------------------------------------------------------
 # Things related to the IPython documentation
 #-------------------------------------------------------------------------------
 
 # update the manuals when building a source dist
 if len(sys.argv) >= 2 and sys.argv[1] in ('sdist','bdist_rpm'):
 
     # List of things to be updated. Each entry is a triplet of args for
     # target_update()
     to_update = [
                  ('docs/man/ipython.1.gz',
                   ['docs/man/ipython.1'],
                   'cd docs/man && gzip -9c ipython.1 > ipython.1.gz'),
                  ]
 
 
     [ target_update(*t) for t in to_update ]
 
 #---------------------------------------------------------------------------
 # Find all the packages, package data, and data_files
 #---------------------------------------------------------------------------
 
 packages = find_packages()
 package_data = find_package_data()
 
 data_files = find_data_files()
 
 setup_args['packages'] = packages
 setup_args['package_data'] = package_data
 setup_args['data_files'] = data_files
 
 #---------------------------------------------------------------------------
 # custom distutils commands
 #---------------------------------------------------------------------------
 # imports here, so they are after setuptools import if there was one
 from distutils.command.sdist import sdist
 
 setup_args['cmdclass'] = {
     'build_py': \
             check_package_data_first(git_prebuild('IPython')),
     'sdist' : git_prebuild('IPython', sdist),
     'symlink': install_symlinked,
     'install_lib_symlink': install_lib_symlink,
     'install_scripts_sym': install_scripts_for_symlink,
     'unsymlink': unsymlink,
 }
 
 
 #---------------------------------------------------------------------------
 # Handle scripts, dependencies, and setuptools specific things
 #---------------------------------------------------------------------------
 
 # For some commands, use setuptools.  Note that we do NOT list install here!
 # If you want a setuptools-enhanced install, just run 'setupegg.py install'
 needs_setuptools = {'develop', 'release', 'bdist_egg', 'bdist_rpm',
            'bdist', 'bdist_dumb', 'bdist_wininst', 'bdist_wheel',
            'egg_info', 'easy_install', 'upload', 'install_egg_info',
           }
 
 if len(needs_setuptools.intersection(sys.argv)) > 0:
     import setuptools
 
 # This dict is used for passing extra arguments that are setuptools
 # specific to setup
 setuptools_extra_args = {}
 
 # setuptools requirements
 
 extras_require = dict(
     parallel = ['ipyparallel'],
     qtconsole = ['qtconsole'],
     doc = ['Sphinx>=1.3'],
     test = ['nose>=0.10.1', 'requests', 'testpath', 'pygments', 'nbformat', 'ipykernel', 'numpy>=1.14'],
     terminal = [],
     kernel = ['ipykernel'],
     nbformat = ['nbformat'],
     notebook = ['notebook', 'ipywidgets'],
     nbconvert = ['nbconvert'],
 )
 
 install_requires = [
     'setuptools>=18.5',
     'jedi>=0.10',
     'decorator',
     'pickleshare',
     'traitlets>=4.2',
     'prompt_toolkit>=2.0.0,<3.1.0,!=3.0.0,!=3.0.1',
     'pygments',
     'backcall',
 ]
 
 # Platform-specific dependencies:
 # This is the correct way to specify these,
 # but requires pip >= 6. pip < 6 ignores these.
 
 extras_require.update({
     ':sys_platform != "win32"': ['pexpect'],
     ':sys_platform == "darwin"': ['appnope'],
     ':sys_platform == "win32"': ['colorama'],
 })
 # FIXME: re-specify above platform dependencies for pip < 6
 # These would result in non-portable bdists.
 if not any(arg.startswith('bdist') for arg in sys.argv):
     if sys.platform == 'darwin':
         install_requires.extend(['appnope'])
 
     if not sys.platform.startswith('win'):
         install_requires.append('pexpect')
 
     # workaround pypa/setuptools#147, where setuptools misspells
     # platform_python_implementation as python_implementation
     if 'setuptools' in sys.modules:
         for key in list(extras_require):
             if 'platform_python_implementation' in key:
                 new_key = key.replace('platform_python_implementation', 'python_implementation')
                 extras_require[new_key] = extras_require.pop(key)
 
 everything = set()
 for key, deps in extras_require.items():
     if ':' not in key:
         everything.update(deps)
-extras_require['all'] = everything
+extras_require['all'] = list(sorted(everything))
 
 if 'setuptools' in sys.modules:
     setuptools_extra_args['python_requires'] = '>=3.6'
     setuptools_extra_args['zip_safe'] = False
     setuptools_extra_args['entry_points'] = {
         'console_scripts': find_entry_points(),
         'pygments.lexers': [
             'ipythonconsole = IPython.lib.lexers:IPythonConsoleLexer',
             'ipython = IPython.lib.lexers:IPythonLexer',
             'ipython3 = IPython.lib.lexers:IPython3Lexer',
         ],
     }
     setup_args['extras_require'] = extras_require
     setup_args['install_requires'] = install_requires
 
 else:
     # scripts has to be a non-empty list, or install_scripts isn't called
     setup_args['scripts'] = [e.split('=')[0].strip() for e in find_entry_points()]
 
     setup_args['cmdclass']['build_scripts'] = build_scripts_entrypt
 
 #---------------------------------------------------------------------------
 # Do the actual setup now
 #---------------------------------------------------------------------------
 
 setup_args.update(setuptools_extra_args)
 
 
 
 def main():
     setup(**setup_args)
 
 if __name__ == '__main__':
     main()

tools/build_release

@@ -1,26 +1,22 b''
 #!/usr/bin/env python3
 """IPython release build script.
 """
 import os
+import sys
 from shutil import rmtree
 
 from toollib import sh, pjoin, get_ipdir, cd, sdists, buildwheels
 
 def build_release():
 
     # Get main ipython dir, this will raise if it doesn't pass some checks
     ipdir = get_ipdir()
     cd(ipdir)
 
-    # Cleanup
-    for d in ['build', 'dist', pjoin('docs', 'build'), pjoin('docs', 'dist'),
-              pjoin('docs', 'source', 'api', 'generated')]:
-        if os.path.isdir(d):
-            rmtree(d)
-
     # Build source and binary distros
     sh(sdists)
     buildwheels()
+    sh(' '.join([sys.executable, 'tools/retar.py', 'dist/*.gz']))
 
 if __name__ == '__main__':
     build_release()

tools/make_tarball.py

@@ -1,22 +1,21 b''
 #!/usr/bin/env python
 """Simple script to create a tarball with proper git info.
 """
 
 import subprocess
-import os
 
 from toollib import cd, sh
 
 tag = subprocess.check_output('git describe --tags', shell=True).decode('utf8', 'replace').strip()
 base_name = 'ipython-%s' % tag
 tar_name = '%s.tgz' % base_name
 
 # git archive is weird:  Even if I give it a specific path, it still won't
 # archive the whole tree.  It seems the only way to get the whole tree is to cd
 # to the top of the tree.  There are long threads (since 2007) on the git list
 # about this and it still doesn't work in a sensible way...
 
 cd('..')
 git_tpl = 'git archive --format=tar --prefix={0}/ HEAD | gzip > {1}'
 sh(git_tpl.format(base_name, tar_name))
 sh('mv {0} tools/'.format(tar_name))

tools/release

@@ -1,96 +1,93 b''
 #!/usr/bin/env python3
 """IPython release script.
 
 This should ONLY be run at real release time.
 """
 from __future__ import print_function
 
 import os
 from glob import glob
 from subprocess import call
 import sys
 
 from toollib import (get_ipdir, pjoin, cd, execfile, sh, archive,
         sdists, archive_user, archive_dir, buildwheels)
 from gh_api import post_download
 
 # Get main ipython dir, this will raise if it doesn't pass some checks
 ipdir = get_ipdir()
 tooldir = pjoin(ipdir, 'tools')
 distdir = pjoin(ipdir, 'dist')
 
 # Where I keep static backups of each release
 ipbackupdir = os.path.expanduser('~/ipython/backup')
 if not os.path.exists(ipbackupdir):
     os.makedirs(ipbackupdir)
 
 # Start in main IPython dir
 cd(ipdir)
 
 # Load release info
 version = None
 execfile(pjoin('IPython','core','release.py'), globals())
 
 # Build site addresses for file uploads
 release_site = '%s/release/%s' % (archive, version)
 backup_site =  '%s/backup/' % archive
 
 # Start actual release process
 print()
 print('Releasing IPython')
 print('=================')
 print()
 print('Version:', version)
 print()
 print('Source IPython directory:', ipdir)
 print()
 
 # Perform local backup, go to tools dir to run it.
 cd(tooldir)
 
 if 'upload' in sys.argv:
     cd(distdir)
 
     # do not upload OS specific files like .DS_Store
     to_upload = glob('*.whl')+glob('*.tar.gz')
     for fname in to_upload:
         # TODO: update to GitHub releases API
         continue
         print('uploading %s to GitHub' % fname)
         desc = "IPython %s source distribution" % version
         post_download("ipython/ipython", fname, description=desc)
 
     # Make target dir if it doesn't exist
     print('1. Uploading IPython to archive.ipython.org')
     sh('ssh %s "mkdir -p %s/release/%s" ' % (archive_user, archive_dir, version))
     sh('scp *.tar.gz *.whl %s' % release_site)
 
     print('2. Uploading backup files...')
     cd(ipbackupdir)
     sh('scp `ls -1tr *tgz | tail -1` %s' % backup_site)
 
     print('3. Uploading to PyPI using twine')
     cd(distdir)
     call(['twine', 'upload'] + to_upload)
 
 else:
     # Build, but don't upload
 
     # Make backup tarball
     sh('./make_tarball.py')
     sh('mv ipython-*.tgz %s' % ipbackupdir)
 
     # Build release files
-    sh('./build_release %s' % ipdir)
+    sh('./build_release')
 
     cd(ipdir)
 
-    # Upload all files
-    sh(sdists)
-
     buildwheels()
     print("`./release upload` to upload source distribution on PyPI and ipython archive")
     sys.exit(0)
 
 
 

tools/release_helper.sh

@@ -1,178 +1,199 b''
 # Simple tool to help for release
 # when releasing with bash, simple source it to get asked questions. 
 
 # misc check before starting
 
 python -c 'import keyring'
 python -c 'import twine'
 python -c 'import sphinx'
 python -c 'import sphinx_rtd_theme'
 python -c 'import nose'
 
 
 BLACK=$(tput setaf 1)
 RED=$(tput setaf 1)
 GREEN=$(tput setaf 2)
 YELLOW=$(tput setaf 3)
 BLUE=$(tput setaf 4)
 MAGENTA=$(tput setaf 5)
 CYAN=$(tput setaf 6)
 WHITE=$(tput setaf 7)
 NOR=$(tput sgr0)
 
 
 echo -n "PREV_RELEASE (X.y.z) [$PREV_RELEASE]: "
 read input
 PREV_RELEASE=${input:-$PREV_RELEASE}
 echo -n "MILESTONE (X.y) [$MILESTONE]: "
 read input
 MILESTONE=${input:-$MILESTONE}
 echo -n "VERSION (X.y.z) [$VERSION]:"
 read input
 VERSION=${input:-$VERSION}
 echo -n "BRANCH (master|X.y) [$BRANCH]:"
 read input
 BRANCH=${input:-$BRANCH}
 
 ask_section(){
     echo
     echo $BLUE"$1"$NOR 
     echo -n $GREEN"Press Enter to continue, S to skip: "$NOR
     read -n1 value
     echo 
     if [ -z $value ] || [ $value = 'y' ]  ; then
         return 0
     fi
     return 1
 }
 
 
 
 echo 
 if ask_section "Updating what's new with informations from docs/source/whatsnew/pr"
 then
     python tools/update_whatsnew.py
 
     echo
     echo $BLUE"please move the contents of "docs/source/whatsnew/development.rst" to version-X.rst"$NOR
     echo $GREEN"Press enter to continue"$NOR
     read
 fi
 
 if ask_section "Gen Stats, and authors"
 then
 
     echo 
     echo $BLUE"here are all the authors that contributed to this release:"$NOR
     git log --format="%aN <%aE>" $PREV_RELEASE... | sort -u -f
 
     echo 
     echo $BLUE"If you see any duplicates cancel (Ctrl-C), then edit .mailmap."
     echo $GREEN"Press enter to continue:"$NOR
     read
 
     echo $BLUE"generating stats"$NOR
     python tools/github_stats.py --milestone $MILESTONE > stats.rst
 
     echo $BLUE"stats.rst files generated."$NOR
     echo $GREEN"Please merge it with the right file (github-stats-X.rst) and commit."$NOR
     echo $GREEN"press enter to continue."$NOR
     read
 
 fi
 
 echo "Cleaning repository"
 git clean -xfdi
 
 echo $GREEN"please update version number in ${RED}IPython/core/release.py${NOR} , Do not commit yet – we'll do it later."$NOR
 
 echo $GREEN"Press enter to continue"$NOR
 read
 
 if ask_section "Build the documentation ?"
 then
     make html -C docs
     echo 
     echo $GREEN"Check the docs, press enter to continue"$NOR
     read
 
 fi
 
-echo
-echo $BLUE"Attempting to build package..."$NOR
-
-tools/build_release
-rm dist/*
-
 if ask_section "Should we commit, tag, push... etc ? "
 then
    echo
    echo $BLUE"Let's commit : git commit -am \"release $VERSION\" -S"
    echo $GREEN"Press enter to commit"$NOR
    read
    git commit -am "release $VERSION" -S
    
    echo
    echo $BLUE"git push origin \$BRANCH ($BRANCH)?"$NOR
    echo $GREEN"Make sure you can push"$NOR
    echo $GREEN"Press enter to continue"$NOR
    read
    git push origin $BRANCH
    
    echo
    echo "Let's tag : git tag -am \"release $VERSION\" \"$VERSION\" -s"
    echo $GREEN"Press enter to tag commit"$NOR
    read
    git tag -am "release $VERSION" "$VERSION" -s
    
    echo
    echo $BLUE"And push the tag: git push origin \$VERSION ?"$NOR
    echo $GREEN"Press enter to continue"$NOR
    read
    git push origin $VERSION
    
    
    echo $GREEN"please update version number and back to .dev in ${RED}IPython/core/release.py"
    echo ${BLUE}"Do not commit yet – we'll do it later."$NOR
    
    echo $GREEN"Press enter to continue"$NOR
    read
    
    echo
    echo "Let's commit : "$BLUE"git commit -am \"back to dev\""$NOR
    echo $GREEN"Press enter to commit"$NOR
    read
    git commit -am "back to dev"
 
    echo
    echo $BLUE"git push origin \$BRANCH ($BRANCH)?"$NOR
    echo $GREEN"Press enter to continue"$NOR
    read
    git push origin $BRANCH
 
    
    echo
    echo $BLUE"let's : git checkout $VERSION"$NOR
    echo $GREEN"Press enter to continue"$NOR
    read
    git checkout $VERSION
 fi
 
 if ask_section "Should we build and release ?"
 then
+    
+    echo $BLUE"going to set SOURCE_DATE_EPOCH"$NOR
+    echo $BLUE'export SOURCE_DATE_EPOCH=$(git show -s --format=%ct HEAD)'$NOR
+    echo $GREEN"Press enter to continue"$NOR
+    read
+
+    export SOURCE_DATE_EPOCH=$(git show -s --format=%ct HEAD)
+
+    echo $BLUE"SOURCE_DATE_EPOCH set to $SOURCE_DATE_EPOCH"$NOR
+    echo $GREEN"Press enter to continue"$NOR
+    read
+
+
+
+    echo
+    echo $BLUE"Attempting to build package..."$NOR
+
+    tools/release
+
+
+    echo $RED'$ shasum -a 256 dist/*'
+    shasum -a 256 dist/*
+    echo $NOR
+
+    echo $BLUE"We are going to rebuild, node the hash above, and compare them to the rebuild"$NOR
+    echo $GREEN"Press enter to continue"$NOR
+    read
 
     echo
     echo $BLUE"Attempting to build package..."$NOR
 
     tools/release
 
-    echo $RED
-    echo '$ shasum -a 256 dist/*'
+    echo $RED"Check the shasum for SOURCE_DATE_EPOCH=$SOURCE_DATE_EPOCH"
+    echo $RED'$ shasum -a 256 dist/*'
     shasum -a 256 dist/*
     echo $NOR
 
     if ask_section "upload packages ?"
     then 
        tools/release upload
     fi
 fi