polygott

> For context, I'm referencing our (legacy) base image for projects on Replit: Polygott (https://github.com/replit/polygott/). May I ask why you didn't use something like Ansible to build such a complex image? With appropriate package version pinning (which it's the real crux here) it should work well enough to get a reproducible build. I understand it would already have been something different from a pure Dockerfile so it's not that fair to compare buuut...

For context, I'm referencing our (legacy) base image for projects on Replit: Polygott (https://github.com/replit/polygott/). The image contains dependencies needed for 50+ languages. This means repls by default are packed with lots of commonly used tools. However, the image is massive, takes a long time to build, and is difficult to deploy. Unfortunately, slimming the image down is not really an option: people rely on all the tools we provide out of the box.

Author here. In our case, we had a large base Docker image called Polygott (https://github.com/replit/polygott) it pulls in dependencies for 50+ different languages from various repositories. We would pin things where possible, but its still very difficult to ensure reproducible builds. Additionally, docker builds have free access to the network to do anything it would like. Nix goes to great lengths to sandbox builds and limit network access. Anything accessed from a network requires a pinned sha 256 hash to ensure the remote data hasn't changed. (https://nixos.wiki/wiki/Nix#Sandboxing)

Slightly off-topic - what is a secure way to run arbitrary code in arbitrary languages in a server? I know replit's polygott docker container allows it. https://github.com/replit/polygott/

I'm curious about this as well. From what I can see, all the components are open-source. Documentation - https://docs.repl.it/ Repl.it evaluation server - https://github.com/replit/polygott Universal interpreter for REPL - https://github.com/replit/prybar Client-side protocol - https://github.com/replit/crosis Evaluation sandbox - https://github.com/replit/replbox

Yes so regardless of what language or where the language runs, we give you a container, inside that container we drop in a server that's responsible for most of the functionality including editing, collaboration, hosting, etc. A little about that here: https://blog.repl.it/collab The IDE is built on top of a window-tiling manager abstraction we built in React.js: https://blog.repl.it/ide Now, as for languages, most of them do run inside the container, which is built from our base image polygott (https://github.com/replit/polygott). However, a select-few are better suited to run on the client. We have a client-side jail called: replbox (https://github.com/replit/replbox). Basic, for example, runs on replbox because I wanted to graphics to be instant. For something like PyGame or LOVE frameworks we had to go with VNC streaming but that's no

As a regular user and promoter of REPL.it, I like it very much and therefore submitted two PR’s [1][2] after seeing a blog post about how to contribute to it [3]. Unfortunately, those PR’s have been lingering up there for the past 4 months without any meaningful feedback. I fully understand that you are a business and therefore there are priorities but it would be great to get any kind of feedback on them in order for me proceed with further actions one way or another. Anyway, thank you for providing such a nice tool for free and open-sourcing it! [1] https://github.com/replit/polygott/pull/28 [2] https://github.com/replit/prybar/pull/30 [3] https://repl.it/site/blog/elisp

Repl.it founder here. Happy to answer questions. But also I'd like to point out that this is not the only "universal" project we're working on. See: - Prybar: Universal REPL interface https://github.com/replit/prybar - Polygott: Universal docker image for all languages (we support) https://github.com/replit/polygott Between these three you'd be able to add your favorite language to Repl.it (patches welcome). We have a write up on how to do that using elisp as an example: https://repl.it/site/blog/elisp