Re-add vinyl
Vinyl [builds](https://github.com/VinylRecords/Vinyl/issues/138) with stackage 15.14.
It is mentioned in several places in the file, and I am not sure about editing the rest of those locations.
commit91600ac603577dc140cab9f8c403be82a1e67275
authorAnthony Cowley <acowley@gmail.com>
dateSat 30 May 2020, 23:35 (6 years ago)
parent0646292
build-constraints.yaml+1
@@ -2801,6 +2801,7 @@ packages:
28012801 - LibZip >= 1.0
28022802
28032803 "Anthony Cowley <acowley@gmail.com> @acowley":
2804+ - vinyl
28042805 - Frames < 0 # GHC 8.4 via base-4.11.0.0
28052806 - hpp < 0 # build failure with GHC 8.4 via bytestring-trie
28062807