Sigv4.sign: def of bend-kit-sigv4@0.11.0.1
Import: import bend-kit-sigv4@0.11.0.1/sigv4.bend as Sigv4
Lines 334-341 of bend-kit-sigv4@0.11.0.1/sigv4.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-sigv4@0.11.0.1/sigv4.bend&start_line=334&end_line=341

import Base

# The Authorization header over exactly the headers hs: the general form, for any header set.
# hs must include host and x-amz-date, and x-amz-security-token for temporary credentials;
# creds.token is not added here (authorize.hash adds it). Send every header in hs.
def sign(creds: Credentials, +region: String, +service: String, +date: String, +method: String, +path: String, +q: String, +hs: List<&2, Sigma<&2, &2, String, _ => String>>, +phash: String) -> IO(Result<&1, &1, U32 & String, String>):
  Credentials{+access, +secret, token} = creds
  do IO<Result<&1, &1, U32 & String, String>>:
    s : Result<&1, &1, U32 & String, String> <- signature(secret, date, region, service, canonical(service, method, path, q, hs, phash))
    return header.of(s, access, scope(date, region, service), signed(hs))

Uses (15):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.bind
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.pure
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-kit-sigv4@0.11.0.1/sigv4.bend&name=Credentials
  https://jend.leeeet.dev/definition.txt?path=bend-kit-sigv4@0.11.0.1/sigv4.bend&name=canonical
  https://jend.leeeet.dev/definition.txt?path=bend-kit-sigv4@0.11.0.1/sigv4.bend&name=header.of
  https://jend.leeeet.dev/definition.txt?path=bend-kit-sigv4@0.11.0.1/sigv4.bend&name=scope
  https://jend.leeeet.dev/definition.txt?path=bend-kit-sigv4@0.11.0.1/sigv4.bend&name=signature
  https://jend.leeeet.dev/definition.txt?path=bend-kit-sigv4@0.11.0.1/sigv4.bend&name=signed