CI: add GHC 9.10

Author: ulysses4ever

.github/workflows/validate.yml

@@ -70,7 +70,7 @@ jobs:
         # If you remove something from here, then add it to the old-ghcs job.
         # Also a removed GHC from here means that we are actually dropping
         # support, so the PR *must* have a changelog entry.
-        ghc: ['9.8.2', '9.6.4', '9.4.8', '9.2.8', '9.0.2', '8.10.7', '8.8.4', '8.6.5']
+        ghc: ['9.10.0.20240426', '9.8.2', '9.6.4', '9.4.8', '9.2.8', '9.0.2', '8.10.7', '8.8.4', '8.6.5']
         exclude:
           # corrupts GHA cache or the fabric of reality itself, see https://github.com/haskell/cabal/issues/8356
           - os: windows-latest
@@ -104,6 +104,7 @@ jobs:
         with:
           ghc-version: ${{ matrix.ghc }}
           cabal-version: latest # latest is mandatory for cabal-testsuite, see https://github.com/haskell/cabal/issues/8133
+          ghcup-release-channel: https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.8.yaml
 
       #  See the following link for a breakdown of the following step
       #  https://github.com/haskell/actions/issues/7#issuecomment-745697160

cabal-install/src/Distribution/Client/TargetSelector.hs

@@ -101,6 +101,11 @@ import Control.Arrow ((&&&))
 import Control.Monad hiding
   ( mfilter
   )
+#if MIN_VERSION_base(4,20,0)
+import Data.Functor as UZ (unzip)
+#else
+import qualified Data.List.NonEmpty as UZ (unzip)
+#endif
 import Data.List
   ( stripPrefix
   )
@@ -585,7 +590,7 @@ resolveTargetSelector knowntargets@KnownTargets{..} mfilter targetStrStatus =
 
     classifyMatchErrors errs
       | Just expectedNE <- NE.nonEmpty expected =
-          let (things, got :| _) = NE.unzip expectedNE
+          let (things, got :| _) = UZ.unzip expectedNE
            in TargetSelectorExpected targetStr (NE.toList things) got
       | not (null nosuch) =
           TargetSelectorNoSuch targetStr nosuch

cabal-install/tests/UnitTests/Distribution/Client/Init/NonInteractive.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE LambdaCase #-}
 
 module UnitTests.Distribution.Client.Init.NonInteractive
@@ -12,7 +13,9 @@ import UnitTests.Distribution.Client.Init.Utils
 import qualified Data.List.NonEmpty as NEL
 import qualified Distribution.SPDX as SPDX
 
+#if !MIN_VERSION_base(4,20,0)
 import Data.List (foldl')
+#endif
 import qualified Data.Set as Set
 import Distribution.CabalSpecVersion
 import Distribution.Client.Init.Defaults

project-cabal/ghc-latest.config

@@ -8,5 +8,17 @@
 
 -- NOTE: don't forget to update the compiler version in the conditional
 -- when upgrading to a newer GHC
-if impl(ghc >= 9.8.1)
-    -- allow-newer: windns:*
+if impl(ghc >= 9.10.0)
+    allow-newer:
+    --windns:*, rere:*, tree-diff:*, uuid-types:*, these:*, hashable:*, assoc:*, semialign:*, indexed-traversable-instances:*, indexed-traversable:*, OneTuple:*, scientific:*, time-compat:*, text-short:*, integer-conversion:*, generically:*, data-fix:*, binary:*
+    -- Artem, 2024-04-21: I started and then gave up...
+        *:base, *:template-haskell, text-short, *:deepseq, *:bytestring, *:ghc-prim
+
+    repository head.hackage.ghc.haskell.org
+        url: https://ghc.gitlab.haskell.org/head.hackage/
+        secure: True
+        key-threshold: 3
+        root-keys:
+            26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329
+            7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d
+            f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89