a year went by

This does many meta-things, but changes no functionality:
 - get rid of stack, and use just cabal with a stackage snapshot instead
   (why did I ever think stack was a good idea?)
 - update the stackage snapshot to something halfway recent
 - thus making builds work on nixpkgs-23.05 (current stable)
 - separating out packages into their own cabal files
 - use the GHC2021 set of extensions as default
 - very slight code changes to make things build again
 - update readme accordingly
 - stylish-haskell run

1 files changed, 2 insertions, 0 deletions

diff --git a/cabal.project b/cabal.project
new file mode 100644
index 0000000..c5b41d4
--- /dev/null
+++ b/cabal.project
@@ -0,0 +1,2 @@
+packages: */*.cabal
+import: https://www.stackage.org/lts-20.26/cabal.config