haskellPackages.tmp-postgres: disable flaky deps

pkgs/development/haskell-modules/configuration-common.nix

@@ -749,6 +749,9 @@ self: super: {
 
   # Needs pginit to function and pgrep to verify.
   tmp-postgres = overrideCabal super.tmp-postgres (drv: {
+    # Flaky tests: https://github.com/jfischoff/tmp-postgres/issues/274
+    doCheck = false;
+
     preCheck = ''
       export HOME="$TMPDIR"
     '' + (drv.preCheck or "");