Remove {.gcsafe.} from procutils.exec.

cliutils/config.nim

@@ -6,13 +6,13 @@ type
     docopt*: Table[string, Value]
     json*: JsonNode
 
-func keyNames(key: string): tuple[arg, env, json: string] {.raises: [KeyError].} =
+proc keyNames(key: string): tuple[arg, env, json: string] {.raises: [KeyError].} =
   try:
     result = (
       "--" & key,
       key.replace('-', '_').toUpper,
       key.replace(re"(-\w)", proc (m: RegexMatch): string = ($m)[1..1].toUpper))
-  except CatchableError:
+  except Exception:
     raise newException(KeyError, "invalid config key: '" & key & "'")
 
 template walkFieldDefs*(t: NimNode, body: untyped) =