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Fix version finding on multiple lines #258

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Fix version finding on multiple lines #258

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14 changes: 5 additions & 9 deletions build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -197,10 +197,7 @@ fn probe_r_paths() -> io::Result<InstallationPaths> {
// Now the library location. On Windows, it depends on the target architecture
let library = get_r_library(&r_home);

Ok(InstallationPaths {
r_home,
library,
})
Ok(InstallationPaths { r_home, library })
}

// Parse an R version (e.g. "4.1.2" and "4.2.0-devel") and return the RVersionInfo.
Expand Down Expand Up @@ -294,13 +291,12 @@ fn get_r_version_from_r(r_paths: &InstallationPaths) -> Result<RVersionInfo, Env
.map_err(EnvVarError::RInvocationError)?;

let out = out.as_os_str().to_string_lossy().into_owned();
let mut lines = out.lines();

// Process the first line of the output
match lines.next() {
Some(v) => parse_r_version(v.to_string()),
None => Err(EnvVarError::InvalidROutput("Cannot find R version")),
}
out.lines()
.map(|v| parse_r_version(v.to_string()))
.find(|r| r.is_ok())
.ok_or_else(|| EnvVarError::InvalidROutput("Cannot find R version"))?
}

fn get_r_version(
Expand Down
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