Bitbucket 放棄 Mercurial

Bitbucket 放棄對 Mercurial 的支援:「Sunsetting Mercurial support in Bitbucket」。


February 1, 2020: users will no longer be able to create new Mercurial repositories
June 1, 2020: users will not be able to use Mercurial features in Bitbucket or via its API and all Mercurial repositories will be removed.

在 Mercurial 網站上的 wiki 也更新了:「Mercurial Hosting」,對於不想要搬到 Git 的人可以在這份列表裡找替代方案。

Rust 版本 Mercurial

看到「Mercurial: 964212780daf」這則 commit log,看起來 MercurialPython 換成 Rust 的計畫正在進行中:

rust: implementation of `hg`

This commit provides a mostly-working implementation of the `hg` script in Rust along with scaffolding to support Rust in the repository.

之前從朋友那邊聽到,在 F 公司用 Mercurial 用到覺得很厭世,主要是因為 repository 太大,一跑下去就會發現記憶體用量與速度都很無奈 (即使內部已經有不少工具改善速度),所以就啟動專案要換一個程式語言,直接拼最後那段的效能 XD

如果是隔壁棚的 Git... 就沒這個問題,一開始 Git 就用 C 寫,所以如果厭世的話也不太容易生出什麼進展了 XDDD

在 Git/Mercurial/Subversion 上 "-" 發生的問題

在「[ANNOUNCE] Git v2.14.1, v2.13.5, and others」這邊看到 - 開頭產生的問題:

These contain a security fix for CVE-2017-1000117, and are released in coordination with Subversion and Mercurial that share a similar issue. CVE-2017-9800 and CVE-2017-1000116 are assigned to these systems, respectively, for issues similar to it that are now addressed in their part of this coordinated release.

這算是老問題了,Git 對應的修正主要是朝 filter input 的方向修正,包括了禁用 - 開頭的 hostname,以及禁止 GIT_PROXY_COMMAND- 開頭,另外是禁止開頭是 - 的 repository name:

  • A "ssh://..." URL can result in a "ssh" command line with a hostname that begins with a dash "-", which would cause the "ssh" command to instead (mis)treat it as an option. This is now prevented by forbidding such a hostname (which should not impact any real-world usage).
  • Similarly, when GIT_PROXY_COMMAND is configured, the command is run with host and port that are parsed out from "ssh://..." URL; a poorly written GIT_PROXY_COMMAND could be tricked into treating a string that begins with a dash "-" as an option. This is now prevented by forbidding such a hostname and port number (again, which should not impact any real-world usage).
  • In the same spirit, a repository name that begins with a dash "-" is also forbidden now.

然後中華電信的 DNS server ( & 都查不到,改用 Google 的 才查得到... =_=

Python 的 Repository 將搬到 GitHub 上

Python 宣佈將會搬到 GitHub 上:「[core-workflow] We will be moving to GitHub」,而目前應該是在 Mercurial 架的「 Mercurial repositories index」上。


Facebook 的主程式碼放在 Git?

在一月時,Facebook 官方的 Engineering Blog 上提到 Facebook 使用 Mercurial 遇到的問題,以及所作的努力「Scaling Mercurial at Facebook」:

Facebook's main source repository is enormous--many times larger than even the Linux kernel, which checked in at 17 million lines of code and 44,000 files in 2013.


Instead, we chose to improve Mercurial. Mercurial is a distributed source control system similar to Git, with many equivalent features.

當時的解讀是 Facebook 把 main source repository 放到 Mercurial 上。

以 Facebook 的規模以及遇到的問題,是有能力直接改變世界的,用 Mercurial 或是 Git 都算是合理的選擇。

不過這幾天在 Twitter 上看到:

這讓人錯亂了啊 XDDD