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fix(runtime): pass HOME/TMP/TEMP to stdio MCP servers on all platforms #1095

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fix(runtime): pass HOME/TMP/TEMP to stdio MCP servers on all platforms #1095

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10 changes: 7 additions & 3 deletions crates/openfang-runtime/src/mcp.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -247,16 +247,20 @@ impl McpConnection {
if let Ok(path) = std::env::var("PATH") {
cmd.env("PATH", path);
}
// Some stdio MCP servers launched via node/npx require a usable home
// directory even when they do not declare any explicit secret env vars.
for var in &["HOME", "TMP", "TEMP"] {
if let Ok(val) = std::env::var(var) {
cmd.env(var, val);
}
}
// On Windows, npm/node need extra vars
if cfg!(windows) {
for var in &[
"APPDATA",
"LOCALAPPDATA",
"USERPROFILE",
"SystemRoot",
"TEMP",
"TMP",
"HOME",
"HOMEDRIVE",
"HOMEPATH",
] {
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