Update nix pin, test with GHC 8.8.4

.buildkite/pipeline.yml

@@ -3,9 +3,9 @@ steps:
     command: |
       nix-build --keep-going --no-out-link --argstr ormoluCompiler ghc865
     timeout: 100
-  - label: Build and test with GHC 8.8.3
+  - label: Build and test with GHC 8.8.4
     command: |
-      nix-build --keep-going --no-out-link --argstr ormoluCompiler ghc883
+      nix-build --keep-going --no-out-link --argstr ormoluCompiler ghc884
     timeout: 100
   - label: Build and test with GHC 8.10.1
     command: |

default.nix

@@ -1,6 +1,6 @@
 { pkgs ? (import ./nix/nixpkgs { inherit system; })
 , system ? builtins.currentSystem
-, ormoluCompiler ? "ghc883" # the shell doesn't work with ghc8101 yet
+, ormoluCompiler ? "ghc884" # the shell doesn't work with ghc8101 yet
 }:
 
 let
@@ -17,12 +17,6 @@ let
   };
   ormoluOverlay = self: super: {
     "ormolu" = super.callCabal2nixWithOptions "ormolu" source "-fdev" { };
-    "ghc-lib-parser" = pkgs.haskell.lib.dontHaddock
-      (super.callHackageDirect {
-        pkg = "ghc-lib-parser";
-        ver = "8.10.1.20200412";
-        sha256 = "sha256-EjMzp8xRT3xVFKDI1fAfopkylGB0hv35Av2+uZeETRU=";
-      } {});
   };
   ormolize = import ./nix/ormolize {
     inherit pkgs;
@@ -34,14 +28,16 @@ let
     "distributed-process"
     "esqueleto"
     "fay"
+    "hlint"
     "idris"
     "intero"
     "leksah"
-    "lens"
     "pandoc"
     "pipes"
+    "postgrest"
     "purescript"
-  ];
+    "tensorflow"
+  ] ++ (if ormoluCompiler == "ghc8101" then [] else ["lens"]);
   ormolizedPackages = doCheck:
     pkgs.lib.mapAttrs (name: p: ormolize {
       package = p;

expected-failures/esqueleto.txt

@@ -3,5 +3,5 @@ The GHC parser (in Haddock mode) failed:
   lexical error in string/character literal at character 's'
 
 The GHC parser (in Haddock mode) failed:
-  test/PostgreSQL/Test.hs:510:9-41
+  test/PostgreSQL/Test.hs:562:9-41
   parse error on input `-- | Check the result is not null'

expected-failures/hlint.txt

@@ -0,0 +1,11 @@
+Formatting is not idempotent:
+  src/Extension.hs<rendered>:19:22
+  before: "DoRec , -} Recursive"
+  after:  "DoRec , -}\n         "
+Please, consider reporting the bug.
+
+Formatting is not idempotent:
+  src/Hint/Bracket.hs<rendered>:249:50
+  before: "\" x y [r]) {ideaSpan"
+  after:  "\" x y [r])\n         "
+Please, consider reporting the bug.

expected-failures/pandoc.txt

@@ -3,7 +3,7 @@ The GHC parser (in Haddock mode) failed:
   parse error on input `import'
 
 Formatting is not idempotent:
-  src/Text/Pandoc/Readers/Vimwiki.hs<rendered>:615:19
+  src/Text/Pandoc/Readers/Vimwiki.hs<rendered>:613:19
   before: ".softbreak <$ endlin"
   after:  ".softbreak\n    <$ en"
 Please, consider reporting the bug.

expected-failures/postgrest.txt

@@ -0,0 +1,5 @@
+Formatting is not idempotent:
+  src/PostgREST/DbRequestBuilder.hs<rendered>:149:24
+  before: "       || -- clients"
+  after:  "       || ( origin ="
+Please, consider reporting the bug.

expected-failures/purescript.txt

@@ -1,10 +1,10 @@
 The GHC parser (in Haddock mode) failed:
-  src/Language/PureScript/AST/Declarations.hs:478:1-17
+  src/Language/PureScript/AST/Declarations.hs:479:1-17
   Invalid type signature: pattern ValueDecl :: ...
 Perhaps you meant to use PatternSynonyms?
 
 The GHC parser (in Haddock mode) failed:
-  src/Language/PureScript/AST/SourcePos.hs:101:1-22
+  src/Language/PureScript/AST/SourcePos.hs:99:1-22
   Invalid type signature: pattern NullSourceSpan :: ...
 Perhaps you meant to use PatternSynonyms?
 

expected-failures/tensorflow.txt

@@ -0,0 +1,7 @@
+The GHC parser (in Haddock mode) failed:
+  tensorflow-mnist/app/Main.hs:50:13-14
+  parse error on input `->'
+
+The GHC parser (in Haddock mode) failed:
+  tensorflow-ops/tests/RegressionTest.hs:3:1-6
+  parse error on input `import'

nix/nixpkgs/default.nix

@@ -1,7 +1,7 @@
 { system ? builtins.currentSystem }:
 let
-  rev = "807ca93fadd5197c2260490de0c76e500562dc05";
-  sha256 = "10yq8bnls77fh3pk5chkkb1sv5lbdgyk1rr2v9xn71rr1k2x563p";
+  rev = "32b46dd897ab2143a609988a04d87452f0bbef59";
+  sha256 = "1gzfrpjnr1bz9zljsyg3a4zrhk8r927sz761mrgcg56dwinkhpjk";
   nixpkgs = builtins.fetchTarball {
     url = "https://github.com/NixOS/nixpkgs/archive/${rev}.tar.gz";
     inherit sha256;

ormolu.cabal

@@ -4,7 +4,7 @@ version:         0.1.2.0
 license:         BSD3
 license-file:    LICENSE.md
 maintainer:      Mark Karpov <mark.karpov@tweag.io>
-tested-with:     ghc ==8.6.5 ghc ==8.8.3 ghc ==8.10.1
+tested-with:     ghc ==8.6.5 ghc ==8.8.4 ghc ==8.10.1
 homepage:        https://github.com/tweag/ormolu
 bug-reports:     https://github.com/tweag/ormolu/issues
 synopsis:        A formatter for Haskell source code