4 ms·

Had to build bazel from scratch, you need: - a previous version of Bazel - GCC/Clang - JDK - Python - Zip and Unzip Not sure I'd call that "huge". Perhaps

by steeve 6y ago

Had to build bazel from scratch, you need: - a previous version of Bazel - GCC/Clang - JDK - Python - Zip and Unzip Not sure I'd call that "huge". Perhaps the JDK?

ryukafalz 6y ago
Since GP said bootstrapping rather than just building... where do you get that previous version of Bazel?
- steeve 6y ago
  From the bazel releases. It always starts with a binary.
  - ryukafalz 6y ago
    I mean sure, you always need to start with a binary somewhere, but to put this into perspective... the binaries needed to bootstrap all the software on the distro I run on my laptop weigh in at about 60 MiB[0]. An x86_64 build of Bazel alone weighs in at about 27 MiB[1]. As someone who cares about source bootstrappability, that feels like sliding backwards. I suppose you may be able to find a chain of older versions of Bazel starting with one that doesn't require Bazel itself to build, like the Guix devs did for Rust[2]. [0] https://guix.gnu.org/blog/2020/guix-further-reduces-bootstrap-seed-to-25/ https://guix.gnu.org/blog/2020/guix-further-reduces-bootstra... [1] https://github.com/bazelbuild/bazel/releases/tag/3.5.0 https://github.com/bazelbuild/bazel/releases/tag/3.5.0 [2] https://guix.gnu.org/blog/2018/bootstrapping-rust/ https://guix.gnu.org/blog/2018/bootstrapping-rust/
    - laurentlb 6y ago
      There are two supported ways of building a Bazel binary. One uses an existing Bazel, this other uses a bash script that calls the compilers.
    - jnxx 6y ago
      And compare that to a few hundred bytes to bootstrap the whole Guix system.
de_watcher 6y ago
He was talking about bootstrapping. But anyway, JDK and Python? Really?
- steeve 6y ago
  Bazel is in Java...
- laurentlb 6y ago
  Bazel is written in C++ and Java. The compile.sh (and the root of the repository) uses bash and probably a few other binaries. What are the issues exactly? Please file a bug if you have issues bootstrapping Bazel (it's not a need for most users, so the process might not be perfect).
jnxx 6y ago
> you need: > > - a previous version of Bazel Why do all these systems seem to need to prove Goedel's theorem? What is wrong with providing a tool that builds portably with a simple C compiler?

by steeve 6y ago

Had to build bazel from scratch, you need: - a previous version of Bazel - GCC/Clang - JDK - Python - Zip and Unzip Not sure I'd call that "huge". Perhaps the JDK?

ryukafalz 6y ago

Since GP said bootstrapping rather than just building... where do you get that previous version of Bazel?

steeve 6y ago
From the bazel releases. It always starts with a binary.
- ryukafalz 6y ago
  I mean sure, you always need to start with a binary somewhere, but to put this into perspective... the binaries needed to bootstrap all the software on the distro I run on my laptop weigh in at about 60 MiB[0]. An x86_64 build of Bazel alone weighs in at about 27 MiB[1]. As someone who cares about source bootstrappability, that feels like sliding backwards. I suppose you may be able to find a chain of older versions of Bazel starting with one that doesn't require Bazel itself to build, like the Guix devs did for Rust[2]. [0] https://guix.gnu.org/blog/2020/guix-further-reduces-bootstrap-seed-to-25/ https://guix.gnu.org/blog/2020/guix-further-reduces-bootstra... [1] https://github.com/bazelbuild/bazel/releases/tag/3.5.0 https://github.com/bazelbuild/bazel/releases/tag/3.5.0 [2] https://guix.gnu.org/blog/2018/bootstrapping-rust/ https://guix.gnu.org/blog/2018/bootstrapping-rust/
  - laurentlb 6y ago
    There are two supported ways of building a Bazel binary. One uses an existing Bazel, this other uses a bash script that calls the compilers.
  - jnxx 6y ago
    And compare that to a few hundred bytes to bootstrap the whole Guix system.

de_watcher 6y ago

He was talking about bootstrapping. But anyway, JDK and Python? Really?

steeve 6y ago
Bazel is in Java...
laurentlb 6y ago
Bazel is written in C++ and Java. The compile.sh (and the root of the repository) uses bash and probably a few other binaries. What are the issues exactly? Please file a bug if you have issues bootstrapping Bazel (it's not a need for most users, so the process might not be perfect).

jnxx 6y ago

> you need: > > - a previous version of Bazel Why do all these systems seem to need to prove Goedel's theorem? What is wrong with providing a tool that builds portably with a simple C compiler?