Mrustc Alternatives

mrustc reviews and mentions

• Why do lifetimes need to be leaky?
  6 projects | /r/rust | 8 Dec 2023

  No, you don't. Existential proof: mrustc ignores lifetimes. Just flat out simply ignores. It changes some corner-cases related to HRBT, yet rustc compiled by mrustc works (that's BTW mrustc exist: to bootsrap the rustc compiler).

• I think C++ is still a desirable coding platform compared to Rust
  2 projects | news.ycombinator.com | 22 Nov 2023

  Incidentally C++ is the only way to bootstrap rust without rust today.

  https://github.com/thepowersgang/mrustc

• Rust – Faster compilation with the parallel front-end in nightly
  3 projects | news.ycombinator.com | 10 Nov 2023

  Well, there is mrustc[0], a Rust compiler that doesn't include a borrow-checker, so it's possible to compile (at least some versions of) Rust without a borrow checker, though it might not result in the most optimized code.

  AFAIK there are some optimization like the infamous `noalias` optimization (which took several tries to get turned on[1]) that uses information established during borrow checking.

  I'm also not sure what the relation with NLL (non-lexical lifetimes) is, where I would assume you would need at least a primitive borrow-checker to establish some information that the backend might be interested in. Then again, mrustc compiles Rust versions that have NLL features without a borrow-checker, so it's again probably more on the optimization side than being essential.

  [0]: https://github.com/thepowersgang/mrustc

  [1]: https://stackoverflow.com/a/57259339

• Running the "Reflections on Trusting Trust" Compiler
  7 projects | news.ycombinator.com | 25 Oct 2023
• Forty years of GNU and the free software movement
  1 project | news.ycombinator.com | 19 Sep 2023

  > Maybe another memory safe language, but Rust has severe bootstrapping issues which is a hard sell for distros that care about source to binary transparency.

  It is possible to bootstrap rustc from just GCC relatively easily, although it's a little bit time consuming.

  You can use mrustc to bootstrap Rust 1.54: https://github.com/thepowersgang/mrustc

  And from then you can go through each version all the way to the current 1.72. (Each new Rust version officially needs the previous one to compile.)

• Building rustc on sparcv9 Solaris
  1 project | /r/rust | 27 Jun 2023

  Have you tried this route : https://github.com/thepowersgang/mrustc ?

• GCC 13 and the state of gccrs
  4 projects | /r/rust | 25 Apr 2023

  Mrustc supports Rust 1.54.0 today

• Any alternate Rust compilers?
  10 projects | /r/rust | 10 Apr 2023
• Stop Comparing Rust to Old C++
  10 projects | /r/cpp | 31 Jan 2023

  There are three. The official one, mrustc (no borrow checker, but can essentially compile the official rustc) and GCC (can't really compile anything substantial yet). Only rustc is production-ready though.

• Can I make it so that only the newest version of Rust gets installed?
  1 project | /r/GUIX | 29 Jan 2023

  That probably depends on what you mean by problematic. Having an ever increasing chain of dependencies isn’t the most desirable situation so there has been some work to trim the bootstrap chain. In 2018, when the blogpost I linked above was written, mrustc was used to bootstrap rust 1.19.0; now mrustc can bootstrap rust 1.54.0 so the chain to recent versions is much shorter than if all those intervening versions back through 1.19.0 needed to be built. https://github.com/thepowersgang/mrustc

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