Ava Chow cc4a2cc6bd Merge bitcoin/bitcoin#33453: docs: Undeprecate datacarrier and datacarriersize configuration options
451ba9ada4 datacarrier: Undeprecate configuration option (Anthony Towns)

Pull request description:

  Removes the deprecation for the `datacarrier` and `datacarriersize` options by reverting commit 0b4048c733 from https://github.com/bitcoin/bitcoin/pull/32406

  **Many current Bitcoin Core users want to continue using this option**
  This statement is based on public postings from many Bitcoin Core users and not a formal survey. AJ Towns’ observation from [#32406](0b4048c733 (r2084024874)) that “_for now there seem to be a bunch of users who like the option_” has only become more apparent in the months since.

  **The deprecation intent is unclear to users**
  This echo’s Ava Chow’s comment from #32714 that “_IMO we should not have removal warnings if there is no current plan to actually remove them._” In months since that comment, partially due to increased feedback from Bitcoin Core users wanting to keep this option, there is even less likelihood of a near term plan to remove these options. That leaves Bitcoin Core users in an unclear situation: the option could be removed in the next version or perhaps never. Removing the deprecation gives clarity for their planning purposes. Deprecating the option in the future, preferably with a removal schedule to better inform users, would still be possible.

  **Minimal downsides to removing deprecation**
  As a best practice, Bitcoin Core has avoided an option when the developers cannot articulate when they should be used. There is non-zero maintenance cost to keeping this code around (although leaving the options deprecated for a long time has the same effect). “Don’t offer users footguns” is also a good principle, but with this option, there seems to be only small impacts that can quickly be remedied by changing the option value by Bitcoin Core users. There already exist in Bitcoin Core more potentially-user-harmful options/values than what datacarrier might cause.

ACKs for top commit:
  ajtowns:
    ACK 451ba9ada4
  darosior:
    That said, certain users care strongly about using those options. In these conditions, i do not see the project removing the option anytime soon. Therefore i think it's technically incorrect (and confusing) to mark it as deprecated. utACK 451ba9ada4 on removing the deprecation.
  instagibbs:
    crACK 451ba9ada4
  Raimo33:
    ACK 451ba9ada4
  Ademan:
    utACK 451ba9a
  ryanofsky:
    Code review ACK 451ba9ada4
  marcofleon:
    ACK 451ba9ada4
  achow101:
    ACK 451ba9ada4
  moonsettler:
    ACK 451ba9ada4
  ismaelsadeeq:
    utACK 451ba9ada4 🛰️
  jonatack:
    ACK 451ba9ada4
  Zero-1729:
    crACK 451ba9ada4
  vasild:
    ACK 451ba9ada4

Tree-SHA512: b83fc509f5dd820976596e1ae9fb69a22ada567e0e0ac88da5fc5e940a46d8894b40cc70c3eff2cbdabd4da5ec913f0d18c1632fc906f210b308855868410699
2025-09-30 15:23:20 -07:00
2025-08-07 11:48:29 +01:00
2025-09-29 14:47:41 -04:00
2025-09-12 11:59:45 +01:00
2023-06-01 23:35:10 +05:30
2025-01-06 12:23:11 +00:00
2025-06-19 11:22:14 +01:00

Bitcoin Core integration/staging tree

https://bitcoincore.org

For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.

What is Bitcoin Core?

Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.

Further information about Bitcoin Core is available in the doc folder.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/license/MIT.

Development Process

The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

Testing

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled during the generation of the build system) with: ctest. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python. These tests can be run (if the test dependencies are installed) with: build/test/functional/test_runner.py (assuming build is your build directory).

The CI (Continuous Integration) systems make sure that every pull request is tested on Windows, Linux, and macOS. The CI must pass on all commits before merge to avoid unrelated CI failures on new pull requests.

Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

Translations

Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.

Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.

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