Cannot build ripgrep on Ubuntu: failed to parse manifest

[pmor13]

I cannot build ripgrep on Ubuntu:

xxx$ git clone https://github.com/BurntSushi/ripgrep
Cloning into 'ripgrep'...
remote: Enumerating objects: 12390, done.
remote: Counting objects: 100% (1392/1392), done.
remote: Compressing objects: 100% (191/191), done.
remote: Total 12390 (delta 1257), reused 1201 (delta 1201), pack-reused 10998 (from 5)
Receiving objects: 100% (12390/12390), 5.13 MiB | 3.79 MiB/s, done.
Resolving deltas: 100% (8550/8550), done.
xxx$ cd ripgrep
xxx/ripgrep$ time cargo build --release
error: failed to parse manifest at `xxx/ripgrep/Cargo.toml`

Caused by:
  expected a boolean or an integer for key `profile.release-lto.debug`

How to fix?

Searching for "failed to parse manifest" produces "There are no matching discussions.".

[BurntSushi]

You don't share your version of Cargo and rustc. My guess is that they are too old.

[pmor13]

@BurntSushi

$ cargo --version
cargo 1.65.0 (4bc8f24d3 2022-10-20)
$ rustc --version
rustc 1.65.0 (897e37553 2022-11-02)

Which versions are needed to build ripgrep?

Why doesn't ripgrep's "build process" check versions?

[BurntSushi]

The minimum Rust version required is documented in the second sentence of the build instructions.

Why doesn't ripgrep's "build process" check versions?

Cargo is supposed to do this because of the rust-version attribute, but the debug value of none used by ripgrep requires Rust 1.71. And apparently Cargo chokes on that before it has a chance to give you a better error message.

ripgrep generally tracks the stable version of Rust, so the MSRV of Rust 1.72 is already quite old by that standard. It's usually even newer than that. The philosophy here is that if you choose a Linux distro that specifically prioritizes stagnation by packaging older versions of software (in this case, multiple years), then you should also be okay with building older versions of software. So you'd want some older version of ripgrep. You can explore the older versions by running git tag | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$'. Alternatively, you can install rustup and use it to manage newer versions of Rust independent from the version that your distro uses.

[pmor13]

Thanks for the help. I solved my issue by using "ready-to-use" ELF rg version 14.1.1 from https://github.com/BurntSushi/ripgrep/releases/tag/14.1.1, which is dated Sep 9, 2024.

Extra question: when the next rg's release is panned? Will it be major release or minor release?

[BurntSushi]

https://github.com/BurntSushi/ripgrep/blob/master/FAQ.md#release