hermit VS sapling

https://github.com/facebookexperimental/hermit but it hasn't worked for me and is now unmaintained.

That's been my experience as well. It lacks support for certain clone(2) flags like CLONE_VFORK[1], which limits the set of non-trivial programs it can run, and since running non-trivial programs is most of the point, I haven't revisited it since it was first announced.

[1] https://github.com/facebookexperimental/hermit/blob/bd3153b4...

A Meta developer responded to an issue of mine on Hermit, and said:

"Just to let you know we're not actively working on Hermit in the team..."

https://github.com/facebookexperimental/hermit/issues/34#iss...

I really like antithesis' approach: it's non-intrusive as all the changes are on a VM so one can run deterministic simulation without changing their code. It's also technically challenging, as making a VM suitable for deterministic simulation is not an easy feat.

On a side, I was wondering how this approach compares to Meta's Hermit(https://github.com/facebookexperimental/hermit), which is a deterministic Linux instead of a VM.

> AMA!

Eager to try it but encountering the build error here - https://github.com/facebookexperimental/hermit/issues/11

Do you have a reference build log / environment you can share? Last known good commit sha and/or output from "rustup show"?

Here is the GitHub repository: https://github.com/facebookexperimental/hermit

Having worked at Google I have unfortunately been exposed to what is possible when in comes to version control systems. I have been looking for a git alternative that is just generally simpler, more ergonomic, and allows for things like stacked PRs while maintaining git compatibility, since everything is on github.

I am uninterested in `you can do that in git with [insert esoteric commands]`.

My main contenders right now are Sapling[0], a project from Meta, and jj[1]. I am wondering if anyone has experience with either, or definitely those who have tried both, what was your experience? They both have a lot of nice features.

[0] https://sapling-scm.com/

We at Meta use Sapling [1], which is open source. Using EdenFS is what makes it super fast at scale.

https://sapling-scm.com/

https://engineering.fb.com/2023/06/27/developer-tools/meta-d...

The server-side IS open source -- actually, it's basically been in the source tree since day 1, but "inert" due to facebook-only dependencies that made the code unusable, but most of the stuff was actually there. And actually, they just recently said it became "usable for unsupported experimentation"[1], so it's been on my TODO list to give Mononoke a run and see how it operates.

I wanted to do this before but, the builds for Mononoke are not actually uploaded yet due to a bug in the GHA setup[2] :')

[1] https://github.com/facebook/sapling?tab=readme-ov-file#monon...

[2] https://github.com/facebook/sapling/issues/922

I am personally surprised that TFA didn't mention either jj or Sapling [0] given its emphasis on how both Git and svn were both made to be backwards compatible!

[0] https://github.com/facebook/sapling

Lots to digest here! I have been keeping an eye on Pijul so it is cool to see some of its features implemented in jj. Sapling[0], similarly, is a new VCS tool out there which can work with a git repo. It also has anonymous branches, no staging area, supports stacked commits and can track the history of a commit over time. I've been using a similar workflow to the article's author: git with a UI to handle commits of hunks of a file to group related changes. My working branch often has unrelated changes that get tossed from branch to branch as I am able to commit. I haven't figured out where these new tools fit into my workflow yet, but I am glad there's new options that will help making working on a project more flexible and organized.

[0]: https://sapling-scm.com

yep both extended it and have versions that can work against GitHub/git servers.

sapling scm from meta has I think the best cli and VS code UX https://sapling-scm.com/

jj from google is also mercurial derived with very similar cli features like histedit and has support for deferring conflict resolution https://github.com/martinvonz/jj