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fix: set locale when running example commands #229

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Merged
david-christiansen merged 1 commit into from
Oct 20, 2025
Merged

fix: set locale when running example commands #229

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5 changes: 4 additions & 1 deletion book/FPLean/Examples/Commands.lean
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,9 @@ def requireContainer (container : Ident) : m Container := do
if let some c := (containersExt.getState (← getEnv)).find? name then return c
else throwErrorAt container "Not found: '{name}'"

private def localeVars : Array String :=
#["LANG", "LC_ALL"]

def command (container : Ident) (dir : System.FilePath) (command : StrLit) (viaShell := false) : m IO.Process.Output := do
let c ← ensureContainer container
unless dir.isRelative do
Expand All @@ -46,7 +49,7 @@ def command (container : Ident) (dir : System.FilePath) (command : StrLit) (viaS
cmd := cmd,
args := args,
cwd := dir,
env := #[("PATH", some (extraPath ++ path))]
env := #[("PATH", some (extraPath ++ path))] ++ localeVars.map (·, some "C.UTF-8")
}
if out.exitCode != 0 then
let stdout := m!"Stdout: {indentD out.stdout}"
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