Mountain/ProcessManagement/NodeResolver/TryVolta.rs
1
2//! Volta shim lookup. `VOLTA_HOME` wins; otherwise `~/.volta`. Volta installs
3//! shim binaries under `<VOLTA_HOME>/bin`.
4
5use std::path::PathBuf;
6
7use crate::ProcessManagement::NodeResolver::{NodeExecutableName, NodeSource, ResolvedNode};
8
9pub fn Fn() -> Option<ResolvedNode::Struct> {
10 let VoltaHome = std::env::var("VOLTA_HOME").ok().or_else(|| {
11 std::env::var("HOME")
12 .ok()
13 .map(|H| PathBuf::from(H).join(".volta").to_string_lossy().into_owned())
14 })?;
15
16 let ShimCandidate = PathBuf::from(&VoltaHome).join("bin").join(NodeExecutableName::Fn());
17
18 if ShimCandidate.exists() {
19 return Some(ResolvedNode::Struct { Path:ShimCandidate, Source:NodeSource::Enum::Volta });
20 }
21
22 None
23}