skip tests that don't work on ghc 9

Author: hamishmack

test/githash/default.nix

@@ -42,6 +42,8 @@ let
     packages.githash-test.components.exes.githash-test;
 
 in recurseIntoAttrs {
+  meta.disabled = compiler-nix-name == "ghc901";
+
   ifdInputs = {
     inherit (project) plan-nix;
   };

test/setup-deps/default.nix

@@ -24,6 +24,8 @@ let
 in 
 
 recurseIntoAttrs ({
+  meta.disabled = compiler-nix-name == "ghc901";
+
   ifdInputs = {
     plan-nix = addMetaAttrs meta project.plan-nix;
   };

test/shell-for-setup-deps/default.nix

@@ -16,6 +16,8 @@ let
   env = project.shellFor {};
 
 in recurseIntoAttrs ({
+  meta.disabled = compiler-nix-name == "ghc901";
+
   ifdInputs = {
     inherit (project) plan-nix;
   };