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Signed-off-by: Tushar Sharma <tusharma@nvidia.com>
Co-authored-by: Anant Sharma <anants@nvidia.com>

fix: Reduce disk space usage in pre-merge-rust action (removes unnecessary sccache artifacts) (#2337)

Signed-off-by: Pavithra Vijayakrishnan <160681768+pvijayakrish@users.noreply.github.com>

Signed-off-by: Meenakshi Sharma <163925564+nvda-mesharma@users.noreply.github.com>

Signed-off-by: Anant Sharma <anants@nvidia.com>

Signed-off-by: Yan Ru Pei <yanrpei@gmail.com>
Co-authored-by: Neelay Shah <neelays@nvidia.com>

Signed-off-by: Suman Tatiraju <167138127+statiraju@users.noreply.github.com>
Signed-off-by: Anant Sharma <anants@nvidia.com>
Co-authored-by: Anant Sharma <anants@nvidia.com>
Co-authored-by: Dmitry Tokarev <dtokarev@nvidia.com>
Co-authored-by: ishandhanani <82981111+ishandhanani@users.noreply.github.com>
Co-authored-by: Kristen Kelleher <kkelleher@nvidia.com>
Co-authored-by: Suman Tatiraju <statiraju@statiraju-mlt.client.nvidia.com>
Co-authored-by: Hannah Zhang <hannahz@nvidia.com>

Approved by OSRB in Slack.

Note we don't check for the closing delimiter to allow the longer copyright format.

Motivation is that it reduces the context usage by 12 lines for every file in the project. That helps things like Cursor and Claude Code fit more, go faster, and cost less.

Signed-off-by: Pavithra Vijayakrishnan

Also upgrade the cargo resolver to v3, the default.

New clippy lints:
- `next_back()` instead of `last()` for a double-ended iterator. That avoids walking the whole list.
- ` repeat_n` instead of `repeat.take`. That avoids cloning.
- Doc indenting

This makes the Rust parts all use ring / rustls library instead of local install of openssl. It's a step on the journey to being statically linked.

Pieces:
- `tokenizers` and `mistralrs` now support rustls (mistralrs by default, tokenizers with feature flag).
- Move shared dependencies up into workspace
- New `rand` crate has some renames for future rust
- Ensure the dependency doesn't creep back in by enforcing it with cargo deny.

Co-authored-by: Meenakshi Sharma <163925564+nvda-mesharma@users.noreply.github.com>

Engines mistralrs, sglang and vllm included by default. Can be disabled like this: `cargo build --no-default-features --features <add-back-what-you-want>`.

Added `--feature vulkan` option, for llamacpp.

Build time message if CUDA or Metal would help and are missing. That's the best we can do:
> warning: dynamo-run@0.1.0: CUDA not enabled, re-run with `--features cuda`

Runtime message if CUDA, Metal or Vulkan are enabled:
> 2025-03-14T21:59:26.501937Z  INFO dynamo_run: CUDA on

Runtime message if they are missing:
> 2025-03-14T22:02:37.439404Z  INFO dynamo_run: CPU mode. Rebuild with `--features cuda|metal|vulkan` for better performance

Defaut engine message includes available engines:
> 2025-03-14T21:59:26.503612Z  INFO dynamo_run: Using default engine: mistralrs. Use out=<engine> to specify one of echo_core, echo_full, mistralrs, llamacpp, sglang, vllm, pystr, pytok

The really important outcome is that this should now "just work":
```
cargo install dynamo-run
dynamo-run Qwen/Qwen2.5-3B-Instruct
```

Sadly you still need `--features cuda|metal` for performance, I couldn't automate that.

Co-authored-by: Meenakshi Sharma <163925564+nvda-mesharma@users.noreply.github.com>

Co-authored-by: Biswa Panda <biswa.panda@gmail.com>