All backends should include their dependencies on PATH

[bhollis]

The Go backend includes dependency_env, which means that it should include any version of Go that's managed by mise on PATH when it runs commands: https://github.com/jdx/mise/blob/main/src/backend/go.rs#L77

Other backends don't do this. e.g. npm: https://github.com/jdx/mise/blob/main/src/backend/npm.rs#L71-L72. This means that the npm backend can't install unless npm is already on PATH.

All of the backends already declare dependencies (e.g. https://github.com/jdx/mise/blob/main/src/backend/pipx.rs#L33-L35) in order to install them before running the backend, so it makes sense that they should all make use of them while running the backend.

[jdx]

mise does do this, but experimental backends are still a work in progress so there are gaps

[liskin]

I believe these two fixes merged recently are related to the issue:

• fix: ensure mise install installs missing runtimes listed in mise ls #2524
• fix: Ensure dependencies are available for alternative backends #2532

Unfortunately, mise still won't install cargo-binstall in time for it to be used for cargo:… tools because it's not declared as a dependency in

mise/src/backend/cargo.rs

Lines 34 to 36 in d161afe

	fn get_dependencies(&self, _tvr: &ToolRequest) -> eyre::Result<Vec<BackendArg>> {
	Ok(vec!["cargo".into(), "rust".into()])
	}

[liskin]

Actually, doesn't seem to work for pipx/uv either, despite the dependencies being declared

mise/src/backend/pipx.rs

Lines 33 to 35 in bc4fae3

	fn get_dependencies(&self, _tvr: &ToolRequest) -> eyre::Result<Vec<BackendArg>> {
	Ok(vec!["pipx".into(), "uv".into()])
	}

$ mise uninstall pipx:timezonefinder
$ mise uninstall ubi:astral-sh/uv
$ MISE_VERBOSE=1 mise install
[DEBUG] ARGS: mise install
[DEBUG] Config {
    Config Files: [
        "~/.mise.toml",
        "~/.config/mise/config.toml",
    ],
}
[DEBUG] ToolRequestSet.build(132.668µs): ToolRequestSet: cargo:ast-grep@0.27.1 cargo:cargo-audit@0.20.1 cargo:cargo-cache@0.8.3 cargo:cargo-edit@0.12.3 cargo:cargo-watch@8.5.2 cargo:ripgrep_all@0.10.6 cargo:tokio-console@0.1.12 cargo:watchexec-cli@2.1.2 ubi:YodaEmbedding/frece@v1.0.6 ubi:cargo-bins/cargo-binstall@v1.10.5 usage@0.3.1 ubi:astral-sh/uv@0.4.10 pipx:timezonefinder@6.5.2

[DEBUG] install_versions: ubi:astral-sh/uv@0.4.10 pipx:timezonefinder@6.5.2
[DEBUG] $ ubi --in /home/tomi/.local/share/mise/installs/ubi-astral-sh-uv/0.4.10/bin --project astral-sh/uv --tag 0.4.10
[DEBUG] $ uv tool install timezonefinder==6.5.2
mise ubi:astral-sh/uv@0.4.10 ✓ installed
Error: 
   0: failed to execute command: uv tool install timezonefinder==6.5.2
   1: No such file or directory (os error 2)

Location:
   src/cmd.rs:253

Version:
   2024.9.3 linux-x64 (e0d1317 2024-09-12)

Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.

I had to manually mise reshim and invoke mise install for the second time for it to pick up uv.