lts-15.0.yaml missing

[bwbaugh]

Repeat of #247 but for another snapshot. ( https://www.stackage.org/lts-15.0 )

$ stack ghc --resolver=lts-15.0 ; date
Downloading lts-15.0 build plan ...
RedownloadInvalidResponse Request {
  host                 = "raw.githubusercontent.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/fpco/lts-haskell/master//lts-15.0.yaml"
  queryString          = ""
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
}
…
Mon Feb 24 10:39:01 PST 2020

[qrilka]

@bwbaugh this was announced previously that starting LTS15 Stackage will not be using old legacy format anymore - https://www.stackage.org/blog/2020/02/discontinuing-legacy-snapshots

[bwbaugh]

Ah, thanks! The relevant portion copied below for others:

However, you will not be able to use Stack 1.9 or earlier with newer nightly or LTS 15 snapshots.