Bootstrapping cargo - instructions unclear

[vojtechkral]

Hi,
the readme says:

If, however, you have neither rustc nor cargo previously installed you can run:

python -B src/etc/install-deps.py
./configure --local-rust-root="$PWD"/rustc
make
make install

This seems to be outdated.
The src/etc/install-deps.py doesn't seem to exist anymore.
Also, running configure says:

configure: CFG_CARGO            :=  
configure: error: needed, but unable to find any of: CFG_CARGO cargo

I'm wondering now how does one compile cargo on a system without cargo.
Thanks!

[alexcrichton]

Oh this is actually just a case where we forgot to update the docs! Cargo now requires a previous installation of Cargo/rustc to be present to build Cargo.

[starius]

What to do if I do not want to run cargo binaries not built by myself?

[alexcrichton]

Cargo requires a Rust compiler to build, and all Rust compilers should be coupled with Cargo, so you can run that Cargo you've got on hand.

[vojtechkral]

@starius There's @dhuseby/cargo-bootstrap

[starius]

@vojtechkral Thanks!
I wrote a script installing Rust and Cargo locally:
https://github.com/starius/config/blob/master/.bin/install-rust

[cnd]

all Rust compilers should be coupled with Cargo sounds problematic/complicated to package cargo and rust in modular way, seems like in source based distribution we will need some separate rust binary bootstrap with compiler and cargo and then rust package and cargo package will depend on that bootstrap package, I wish configure to be smarter and download binaries it needs in case when cargo is not installed but that's not correct way either since build process shouldn't ideally download anything so maybe it's just some another headache for packaging.