From 9f49c20668e155db4855bc2f2a46898925449ce3 Mon Sep 17 00:00:00 2001
From: Nicholas Clarke <nicholas.clarke@iohk.io>
Date: Fri, 27 Nov 2020 15:25:03 +0100
Subject: [PATCH] Make Alonzo non-buildable in older GHC versions.

By the time we release Alonzo, we expect to have dropped support for
older GHC versions. This allows us to keep the 8.6.5 CI while ignoring
this package in that case.
---
 alonzo/impl/cardano-ledger-alonzo.cabal | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/alonzo/impl/cardano-ledger-alonzo.cabal b/alonzo/impl/cardano-ledger-alonzo.cabal
index 2e2ddbb4b7..893ec4ee60 100644
--- a/alonzo/impl/cardano-ledger-alonzo.cabal
+++ b/alonzo/impl/cardano-ledger-alonzo.cabal
@@ -15,6 +15,10 @@ category:            Network
 build-type:          Simple
 
 library
+  -- We make use of features requiring ghc >= 8.10. In order to allow CI to
+  -- still build the 'all' component, simply make this non-buildable.
+  if impl(ghc < 8.10)
+    buildable: False
   exposed-modules:
     Cardano.Ledger.Alonzo
   build-depends: