minimal-bootstrap.mes: `replaceExt` -> `stripExt`

  CC = toString ([ cc ] ++ ccArgs);

  replaceExt = ext: source:

  stripExt = source:

    lib.replaceStrings

      [ ".c" ]

      [ ext ]

      [ "" ]

      (builtins.baseNameOf source);

  compile = source: kaem.runCommand (replaceExt "" source) {} ''

  compile = source: kaem.runCommand (stripExt source) {} ''

    mkdir ''${out}

    cd ''${out}

    ${CC} -c ${srcPrefix}/${source}