docs: def pkg_checksum(binary, repo):
      """Return checksum from CHECKSUMS.md5 file by repository
      """
      md5 = "None"
      if repo == "slack_patches" and _meta_.slack_rel == "stable":
          CHECKSUMS_md5 = URL(mirrors("CHECKSUMS.md5", "patches/")).reading()
      elif repo == "slack_patches" and _meta_.slack_rel == "current":
          CHECKSUMS_md5 = URL(mirrors("CHECKSUMS.md5", "")).reading()
      elif repo == "slpkg":
          CHECKSUMS_md5 = URL(_meta_.CHECKSUMS_link).reading()
      else:
          lib = "{0}{1}_repo/CHECKSUMS.md5".format(_meta_.lib_path, repo)
          f = open(lib, "r")
          CHECKSUMS_md5 = f.read()
          f.close()
      for line in CHECKSUMS_md5.splitlines():
          if line.endswith("/{0}".format(binary)):
              md5 = line.split()[0]
      return md5