Add a Proxy Option for download things from github

[esp-rs]

Add a Proxy Option for download things from github

[SergioGasquez]

Just a small update on this, on yesterday's community meeting we discussed this issue. We will be probably creating a mirror of our Xtensa Rust and LLVM artifacts, probably in AWS, but we will wait until no_std does not require GCC as a linker so we don't have to create a mirror for it too.

[SergioGasquez]

Hi, we are more than happy to accept contributions! Definitely, this is something that we will need to solve.

[SergioGasquez]

For reference, we could use:

• https://gitee.com/espressif_systems as mirror of esp-idf and other github dependencies
• And we could upload release binaries to AWS like we do in: https://github.com/espressif/idf-installer/blob/main/.github/workflows/update-index.yml

[RedElectricity]

🤔maybe rust-build need a mirror too

espup install --toolchain-version 1.66.0.0 -d x86_64-pc-windows-gnu --esp-idf-version master
[2022-12-20T06:11:23Z INFO ] 💽  Installing esp-rs
[2022-12-20T06:11:23Z INFO ] 🔧  Checking existing Rust installation
[2022-12-20T06:11:24Z INFO ] 🔧  Installing Xtensa Rust 1.66.0.0 toolchain
[2022-12-20T06:11:24Z INFO ] 📥  Downloading file rust.zip from https://github.com/esp-rs/rust-build/releases/download/v1.66.0.0/rust-1.66.0.0-x86_64-pc-windows-gnu.zip
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: InvalidArchive("Invalid zip header")', C:\Users\redel\scoop\persist\rustup\.cargo\registry\src\mirrors.tuna.tsinghua.edu.cn-df7c3c540f42cdbd\espup-0.2.4\src\toolchain\mod.rs:59:65
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[SergioGasquez]

We could publish the toolchain release artifacts to AWS.

[SergioGasquez]

Tracking issue for Xtensa Rust mirror: esp-rs/rust-build#27

[SergioGasquez]

Just noticed that @chang196700 is using https://ghproxy.com/. I dont have any experience with it, but if it works, maybe we could just include a --proxy argument that when used we download it from ghproxy instead.