Update flake.nix to make GHC 9.10,1 and GHC 9.8.2 available

flake.nix

@@ -36,12 +36,12 @@
       # The versions of GHC that we want to be able to build / develop against
       # within the nix environment. Since nix is lazy, only derivations for
       # versions of GHC which are used are actually evaluated.
-      ghcVersions = [ "ghc902" "ghc962" ];
+      ghcVersions = [ "ghc96" "ghc98" "ghc910" ];
 
       # We pick a single version of GHC to use by default within nix. This is
       # probably cleaner than always having N copies of each package / app and
       # being forced to refer to them by their GHC version.
-      defaultGhcVersion = "ghc962";
+      defaultGhcVersion = "ghc910";
 
       # Overlays are not per-system, so let's only compute them once.
       # For each version of GHC we produce a `pkgs.clashPackages-ghcVER`, e.g.
@@ -83,6 +83,9 @@
       in
       assert pkgs.lib.asserts.assertOneOf "defaultGhcVersion" defaultGhcVersion ghcVersions;
       {
+        # Export the variable so that other flakes can use it.
+        ghcVersion = defaultGhcVersion;
+
         packages = {
           inherit (pkgs."clashPackages-${defaultGhcVersion}")
             clash-benchmark

nix/overlay-ghc910.nix

@@ -0,0 +1,60 @@
+{ pkgs }:
+final: prev:
+let
+  inherit (pkgs.haskell.lib) dontCheck doJailbreak markUnbroken;
+in
+{
+  # Use an older version than the default in nixpkgs. Since rewrite-inspector
+  # is basically abandonware it catches fire with brick 1.0+.
+  brick = doJailbreak prev.brick_0_70_1;
+
+  # brick 0.70.1 requires vty < 6.0.
+  vty = doJailbreak (prev.callHackage "vty" "5.39" { });
+
+  # Relies on older versions of some libraries.
+  hint = doJailbreak prev.hint;
+
+  # Marked as broken in nixpkgs, since it specifies much older dependencies
+  # than the defaults in nixpkgs.
+  rewrite-inspector = doJailbreak (markUnbroken prev.rewrite-inspector);
+
+  # Requires some old versions of libraries, but still works.
+  derive-storable-plugin = doJailbreak prev.derive-storable-plugin;
+
+  # Marken as broken, but compiles anyway.
+  hedgehog-fakedata = doJailbreak (markUnbroken prev.hedgehog-fakedata);
+
+  # Fails on GHC 9.10 with:
+  #   library/Text/Regex/PCRE/Heavy.hs:123: failure in expression `head $ scan [re|\s*entry (\d+) (\w+)\s*&?|] (" entry 1 hello  &entry 2 hi" :: String)'                                                           
+  # expected: (" entry 1 hello  &",["1","hello"])                                                                                                                                                                 
+  #  but got: <interactive>:55:1: warning: [GHC-63394] [-Wx-partial]                                                                                                                                              
+  #           ^                                                                                                                                                                                  
+  #               In the use of ‘head’                                                                                                                                                                 
+  #               (imported from Prelude.Compat, but defined in GHC.Internal.List):
+  #               "This is a partial function, it throws an error on empty lists. Use pattern matching, 'Data.List.uncons' or 'Data.Maybe.listToMaybe' instead. Consider refactoring to use "Data.List.NonEmpty"."
+  # (" entry 1 hello  &",["1","hello"])
+
+  pcre-heavy = dontCheck prev.pcre-heavy;
+
+  # Relies on older versions of text.
+  string-random = doJailbreak prev.string-random;
+
+  # We need the newest version from nixpkgs for these packages.
+  singletons-base = prev.singletons-base_3_4;
+
+  microstache = prev.microstache_1_0_3;
+
+  th-desugar = prev.th-desugar_1_17;
+
+  singletons-th = prev.singletons-th_3_4;
+
+  # nixplgs doesn't include revision 1, changing dependency on template-haskell.
+  string-interpolate = pkgs.haskell.lib.compose.overrideCabal (drv: {
+    revision = "1";
+    editedCabalFile = "sha256-oh0tR+LDFcVzQnm4kSrmhAU+P7wdai536d72Cvhzipg=";
+  }) (prev.callHackageDirect {
+    pkg = "string-interpolate";
+    ver = "0.3.4.0";
+    sha256 = "sha256-KA8P6cc6N7pZ9/ay3edcEGx4vpKtp+EY7tn8U1NrbG8=";
+  } { });
+}

nix/overlay-ghc962.nix → nix/overlay-ghc96.nix

@@ -1,13 +1,15 @@
 { pkgs }:
 final: prev:
 let
-  inherit (pkgs.haskell.lib) doJailbreak dontCheck markUnbroken;
+  inherit (pkgs.haskell.lib) doJailbreak markUnbroken;
 in
 {
   # Use an older version than the default in nixpkgs. Since rewrite-inspector
   # is basically abandonware it catches fire with brick 1.0+.
   brick = doJailbreak prev.brick_0_70_1;
 
+  vty = prev.callHackage "vty" "5.39" { };
+
   # Marked as broken in nixpkgs, since it needs on a newer hashable than the
   # .cabal file currently uploaded to hackage.
   concurrent-supply = doJailbreak (markUnbroken prev.concurrent-supply);
@@ -28,25 +30,15 @@ in
   # than the defaults in nixpkgs.
   rewrite-inspector = doJailbreak (markUnbroken prev.rewrite-inspector);
 
-  # We want a version that matches with singletons-th, but the tests in here
-  # are also a bit flaky since GHC 9.6 isn't officially supported.
-  singletons-base = dontCheck prev.singletons-base_3_2;
-
-  # Use a newer version than the default in nixpkgs.
-  singletons-th = prev.singletons-th_3_2;
-
   # Needs a newer text than the .cabal file currently uploaded to hackage.
   string-qq = doJailbreak prev.string-qq;
 
-  # Needs a newer version than the default in nixpkgs.
-  th-desugar = prev.th-desugar_1_15;
-
   # Needs a newer base than the .cabal file currently uploaded to hackage.
   vector-binary-instances = doJailbreak prev.vector-binary-instances;
 
-  # Use an older version than the default in nixpkgs.
-  th-abstraction = prev.th-abstraction_0_5_0_0;
-
   # type-errors 0.2.0.2 is bounded on doctest >=0.16.0.1 && <0.22
   doctest = prev.callHackage "doctest" "0.21.1" { };
+
+  # Marken as broken, but compiles anyway.
+  hedgehog-fakedata = doJailbreak (markUnbroken prev.hedgehog-fakedata);
 }

nix/overlay-ghc98.nix

@@ -0,0 +1,23 @@
+{ pkgs }:
+final: prev:
+let
+  inherit (pkgs.haskell.lib) doJailbreak markUnbroken;
+in
+{
+  # Use an older version than the default in nixpkgs. Since rewrite-inspector
+  # is basically abandonware it catches fire with brick 1.0+.
+  brick = doJailbreak prev.brick_0_70_1;
+
+  # brick 0.70.1 requires vty < 6.0.
+  vty = doJailbreak (prev.callHackage "vty" "5.39" { });
+
+  # Marked as broken in nixpkgs, since it specifies much older dependencies
+  # than the defaults in nixpkgs.
+  rewrite-inspector = doJailbreak (markUnbroken prev.rewrite-inspector);
+
+  # Requires some old versions of libraries, but still works.
+  derive-storable-plugin = doJailbreak prev.derive-storable-plugin;
+
+  # Marken as broken, but compiles anyway.
+  hedgehog-fakedata = doJailbreak (markUnbroken prev.hedgehog-fakedata);
+}

nix/overlay.nix

@@ -49,7 +49,7 @@ let
           "${ghc-typelits-natnormalise}"
           { };
       # doctest-parallel = hprev.callHackage "doctest-parallel" "0.3.1" { };
-      doctest-parallel = hprev.callHackageDirect { pkg = "doctest-parallel"; ver = "0.3.1"; sha256 = "sha256-j0mk4RTEau6Cl90E8vMWZiA/ldRRurtLSYbGGE+q/vk="; } {};
+      # doctest-parallel = hprev.callHackageDirect { pkg = "doctest-parallel"; ver = "0.3.1"; sha256 = "sha256-j0mk4RTEau6Cl90E8vMWZiA/ldRRurtLSYbGGE+q/vk="; } {};
     };
 
   # An overlay with the packages in this repository.