readd socket

socket should build again (at least it does so with stackage-lts in
nixpkgs) and I can look after it in the future.

build-constraints.yaml

@@ -9,6 +9,9 @@ cabal-format-version: "3.0"
 
 # Constraints for brand new builds
 packages:
+    "Lukas Epple <sternenseemann@systemli.org> @sternenseemann":
+        - socket
+
     "James Sully <sullyj3@gmail.com> @sullyj3":
         - buttplug-hs-core
 
@@ -1270,7 +1273,6 @@ packages:
         - immortal
         - regex-applicative
         - lexer-applicative < 0 # DependencyFailed (PackageName "srcloc")
-        - socket < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - tasty
         - tasty-golden
         - tasty-hunit