How to install Rust nightly *without* rust-docs, miri-preview and all other folders except rustc, cargo, rust-std?

help
1

rust-docs is 679 MB. I have ~500 MB of space on my device.

Right now I have have fetched the Nightly release and extracted cargo, rustc, and rust-std-x86_64-unknown-linux-gnu folders in a local directory.

I don't have 1 GB for the default Rust toolchain install.

I just intend to use the Rust standard library, and write Rust scripts in .rs files that I will execute without importing and crates, or compling with rustc or cargo -Zscript.

That ain't working without cargo knowing where the rustc executable is in the same parent working directory.

$ cargo/bin/cargo -Zscript ~/bin/script.rs
warning: `package.edition` is unspecified, defaulting to `2021`
error: could not execute process `rustc -vV` (never executed)

Caused by:
  Permission denied (os error 13)
2

A minimal but managed install will apparently get you in the vicinity of 450M.

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- --profile minimal

I don't know if it needs extra space during installation or not.

3

How can I make sure to not install the rust-docs? I don't need that.

4

I evidently need to install Nightly for scripting capabilities https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#script.

5

Minimal doesn't install the docs.

--default-toolchain nightly is the option to choose nightly.

6

I'll delete the folders I extracted and try that. Right now I only have 417 MB of space on this device.

7

Does that include the minimal option?

Can you write the whole line out that produces, to the best of your knowledge, the most minimal nightly Rust install available officially?

8 
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- --profile minimal --default-toolchain nightly
10

I freed up some space, got to 1.2 GB of disk space.

$ rustup-init --profile minimal --default-toolchain nightly

info: profile set to 'minimal'
info: default host triple is x86_64-unknown-linux-gnu
info: syncing channel updates for 'nightly-x86_64-unknown-linux-gnu'
info: latest update on 2024-08-07, rust version 1.82.0-nightly (60d146580 2024-08-06)
info: downloading component 'cargo'
  8.9 MiB /   8.9 MiB (100 %)   1.2 MiB/s in  7s ETA:  0s
info: downloading component 'rust-std'
 28.5 MiB /  28.5 MiB (100 %) 960.2 KiB/s in 34s ETA:  0s 
info: downloading component 'rustc'
 70.6 MiB /  70.6 MiB (100 %)   1.1 MiB/s in  1m 33s ETA:  0s 
info: installing component 'cargo'
  8.9 MiB /   8.9 MiB (100 %)   8.1 MiB/s in  1s ETA:  0s
info: installing component 'rust-std'
 28.5 MiB /  28.5 MiB (100 %)   7.4 MiB/s in  3s ETA:  0s
info: installing component 'rustc'
 70.6 MiB /  70.6 MiB (100 %)   7.8 MiB/s in  8s ETA:  0s
info: default toolchain set to 'nightly-x86_64-unknown-linux-gnu'

  nightly-x86_64-unknown-linux-gnu installed - rustc 1.82.0-nightly (60d146580 2024-08-06)

According to my math that's 216. I have 732 MB of disk space on the machine now. 468 MB +/-. I can work with that. Thanks.