Check compilation with GHC 8.4.4

ghc-exactprint needed an update, to 0.5.8.2

Fixes #906

stack-8.4.3.yaml

@@ -14,7 +14,7 @@ extra-deps:
 - cabal-helper-0.8.1.0@rev:0
 - cabal-plan-0.3.0.0
 - constrained-dynamic-0.1.0.0
-- ghc-exactprint-0.5.8.0
+- ghc-exactprint-0.5.8.2
 - haddock-api-2.20.0
 - haddock-library-1.6.0
 - hsimport-0.8.6

stack-8.4.4.yaml

@@ -0,0 +1,35 @@
+resolver: lts-12.14
+compiler-check: newer-minor
+packages:
+- .
+- hie-plugin-api
+
+extra-deps:
+- ./submodules/brittany
+- ./submodules/HaRe
+- ./submodules/ghc-mod
+- ./submodules/ghc-mod/core
+- ./submodules/haskell-lsp
+- ./submodules/haskell-lsp/haskell-lsp-types
+- base-compat-0.9.3
+- cabal-helper-0.8.1.0@rev:0
+- cabal-plan-0.3.0.0
+- constrained-dynamic-0.1.0.0
+- ghc-exactprint-0.5.8.2
+- haddock-api-2.20.0
+- haddock-library-1.6.0
+- hsimport-0.8.6
+- lsp-test-0.4.0.0
+- syz-0.2.0.0
+- temporary-1.2.1.1
+
+flags:
+  haskell-ide-engine:
+    pedantic: true
+  hie-plugin-api:
+    pedantic: true
+
+nix:
+  packages: [ icu libcxx zlib ]
+
+concurrent-tests: false