josh | nixpkgs | |
---|---|---|
21 | 975 | |
1,335 | 15,753 | |
3.8% | 2.8% | |
7.5 | 10.0 | |
5 days ago | 2 days ago | |
Rust | Nix | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
josh
- GitHub – josh-project/josh: Just One Single History
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Debian Git Monorepo
Why use submodules when you can properly vendor the upstream git, and export/import commits without breaking hashes on either side?
https://github.com/josh-project/josh
We've been using josh at TVL for years and it's just amazing.
- Josh: Just One Single History
- Just One Single History
- Metahead – An enterprise-grade, Git-based metarepo
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PyPy has moved to Git, GitHub
Scalar explicitly does not implement the virtualized filesystem the OP is referring to. The original Git VFS for Windows that Microsoft designed did in fact do this, but as your second link notes, Microsoft abandoned that in favor of Scalar's totally different design which explicitly was about scaling repositories without filesystem virtualization.
There's a bunch of related features they added to Git to achieve scalability without virtualization. Those are all useful and Scalar is a welcome addition. But the need for a virtual filesystem layer for large-scale repositories is still a very real one. There are also some limitations that aren't ideal; for example Git's partial clones IIRC can only be used as a "cone" applied to the original filesystem hierarchy. More generalized designs would allow mapping any arbitrary paths in the original repository to any other path in the virtual checkout. Tools like Josh can do this today with existing Git repositories[1]. That helps you get even sparser and smaller checkouts.
The Git for Windows that was referenced isn't even that big at 300GB, by the way. Game studios regularly have repositories that exist at multi-terabyte size, and they have also converged on similar virtualization solutions. For example, Destiny 2 uses a "virtual file synchronization" layer called VirtualSync[2] that reduced the working size of their checkouts by over 98%, multiple terabytes of savings per person. And in a twist of fate, VirtualSync was implemented thanks to a feature called "ProjFS" that Microsoft added to Windows... which was motivated originally by the Git VFS for Windows they abandoned!
[1] https://github.com/josh-project/josh
[2] https://www.gdcvault.com/play/1027699/Virtual-Sync-Terabytes...
- Just One Single History – combine the advantages of monorepos with multirepos
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Kubernetes Broke Git
Good overview, I know these sorts of pains well. Lots of hard questions and few definitive wins/right answers. How to organize a massive repository out in the open is still an open question. On that note, recently, I've been experimenting with this project called josh, which basically is like 'git subtree on extreme steroids, functioning as a git proxy':
https://josh-project.github.io/josh/
It basically lets you unify/view many repositories as a single one, or equivalent to split a mono-repo into smaller sized units of work for CI, specific teams, etc. It's bidirectional, so you push and pull from josh and everything goes into a single linear history in the mono repo. And because it's bidirectional, people in the mono-repo can still do things like make large-scale atomic changes across all sub-repositories, and those get reflected.
Josh currently isn't suitable for a lot of workloads due to various reasons (authentication is one that stands out), but it's actually the first tool I have seen that manages to offer BitKeeper-like "subtrees" that work really well, at scale, for large repos and teams. It requires some care to make sure "sub-trees" can be usable units of work, but it was one of the best features of BK in my opinion and really great for people doing one-off contributions, or isolating trees/changes to specific developers.
I'd be interested to know if there are other open alternatives to this. It's a nice point in the design space between solutions like "integrate with the filesystem layer to do sparse clones" or "just split up the repos."
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What Comes After Git
With regard to repo composition, I have been following this project: https://github.com/josh-project/josh
nixpkgs
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Nix: The Breaking Point
I don't think so. The article is probably intended for the Nix community, so the author doesn't need to convince HN that something is going on. If as an outsider you are interested then you need to look into it yourself, the community has no obligation to make their internal conflicts legible to the outside world.
As an outsider myself, it certainly looks like something is going on as more than 20 Nixpkg maintainers left in a week: https://github.com/NixOS/nixpkgs/issues?q=label%3A%228.has%3...
- Maintainers Leaving
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Air Force picks Anduril, General Atomics to develop unmanned fighter jets
https://github.com/NixOS/nixpkgs/commits?author=neon-sunset
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Eelco Dolstra's leadership is corrosive to the Nix project
I see two signers in the top 6 displayed on https://github.com/NixOS/nixpkgs/graphs/contributors
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3rd Edition of Programming: Principles and Practice Using C++ by Stroustrup
For a single file script, nix can make the package management quite easy: https://github.com/NixOS/nixpkgs/blob/master/doc/languages-f...
For example,
```
- NixOS/nixpkgs: There isn't a clear canonical way to refer to a specific package
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NixOS Is Not Reproducible
Yes, Nix doesn't actually ensure that the builds are deterministic. In fact it works just fine if they aren't. There are packages in nixpkgs that aren't reproducible: https://github.com/NixOS/nixpkgs/issues?q=is%3Aopen+is%3Aiss...
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The xz attack shell script
I'm not familiar with Bazel, but Nix in it's current form wouldn't have solved this attack. First of all, the standard mkDerivation function calls the same configure; make; make install process that made this attack possible. Nixpkgs regularly pulls in external resources (fetchUrl and friends) that are equally vulnerable to a poisoned release tarball. Checkout the comment on the current xz entry in nixpkgs https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/comp...
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Debian Git Monorepo
NixOS uses a monorepo and I think everyone's love it.
I love being able to easily grep through all the packages source code and there's regularly PRs that harmonizes conventions across many packages.
Nixpkgs doesn't include the packaged software source code, so it's a lot more practical than what Debian is doing.
https://github.com/NixOS/nixpkgs
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From xz to ibus: more questionable tarballs
In this specific case, nix uses fetchFromGitHub to download the source archive, which are generated by GitHub for the specified revision[1]. Arch seems to just download the tarball from the releases page[2].
[1]: https://github.com/NixOS/nixpkgs/blob/3c2fdd0a4e6396fc310a6e...
[2]: https://gitlab.archlinux.org/archlinux/packaging/packages/ib...
What are some alternatives?
josh - Just One Single History
asdf - Extendable version manager with support for Ruby, Node.js, Elixir, Erlang & more
git-filter-repo - Quickly rewrite git repository history (filter-branch replacement)
Home Manager using Nix - Manage a user environment using Nix [maintainer=@rycee]
scalar - Scalar: A set of tools and extensions for Git to allow very large monorepos to run on Git without a virtualization layer
git-lfs - Git extension for versioning large files
josh - Just One Single History [Moved to: https://github.com/josh-project/josh]
easyeffects - Limiter, compressor, convolver, equalizer and auto volume and many other plugins for PipeWire applications
git-branchless - High-velocity, monorepo-scale workflow for Git
spack - A flexible package manager that supports multiple versions, configurations, platforms, and compilers.
VFSForGit - Virtual File System for Git: Enable Git at Enterprise Scale
waydroid - Waydroid uses a container-based approach to boot a full Android system on a regular GNU/Linux system like Ubuntu.