Flowistry fails to install

[nsabovic]

cargo install flowistry_ide on my computer (M1 macOS 12.2.1 aarch64) fails with 700+ errors, I've attached the first few. This probably isn't meant to be installed this way, but:

1. cargo update will try to install it and fail, breaking standard upgrade process. For instance, topgrade will error out.
2. Installing from VSCode also fails on my computer, with a different error.

   Compiling flowistry v0.5.7
error[E0463]: can't find crate for `either`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:53:1
   |
53 | extern crate either;
   | ^^^^^^^^^^^^^^^^^^^^ can't find crate

error[E0463]: can't find crate for `rustc_borrowck`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:54:1
   |
54 | extern crate rustc_borrowck;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_data_structures`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:55:1
   |
55 | extern crate rustc_data_structures;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_driver`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:56:1
   |
56 | extern crate rustc_driver;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_graphviz`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:57:1
   |
57 | extern crate rustc_graphviz;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_hir`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:58:1
   |
58 | extern crate rustc_hir;
   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_hir_pretty`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:59:1
   |
59 | extern crate rustc_hir_pretty;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_index`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:60:1
   |
60 | extern crate rustc_index;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_infer`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:61:1
   |
61 | extern crate rustc_infer;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_interface`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:62:1
   |
62 | extern crate rustc_interface;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_macros`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:63:1
   |
63 | extern crate rustc_macros;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_middle`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:64:1
   |
64 | extern crate rustc_middle;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_mir_dataflow`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:65:1
   |
65 | extern crate rustc_mir_dataflow;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_mir_transform`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:66:1
   |
66 | extern crate rustc_mir_transform;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

error[E0463]: can't find crate for `rustc_serialize`
  --> /Users/johndoe/.cargo/registry/src/github.com-1ecc6299db9ec823/flowistry-0.5.7/src/lib.rs:67:1
   |
67 | extern crate rustc_serialize;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
   |
   = help: maybe you need to install the missing components with: `rustup component add rust-src rustc-dev llvm-tools-preview`

[willcrichton]

If you install it manually, you have to make sure to add cargo +nightly-2022-02-17 install ... so the correct compiler is used.

[nsabovic]

I see.

I find it very confusing to have things installed by VSCode inside my $HOME/.cargo directory. It breaks cargo update. Also, I didn't put it there, unlike all the other things in cargo install --list. Maybe it's me, I cringe at the thought of GUI apps putting things in my /usr/local too. Is there a VSCode-specific directory for binary artifacts?

Let me also just add that I love Flowistry and don't see this as a deal breaker.

[willcrichton]

Ah that's fair, yeah. Theoretically I could download the binaries directly into the extension directory, I will open an issue and explore that in the next patch.