make it buildable for Aeson 2.0

.dir-locals.el

@@ -0,0 +1 @@
+((nil . ((lsp-haskell-server-path . "haskell-language-server"))))

.ghci

@@ -1 +1,2 @@
-:set prompt  "\x03BB: "
+:def hg \x -> return $ ":!hoogle \"" ++ x ++ "\""
+:def hgi \x -> return $ ":!hoogle --info \"" ++ x ++ "\""

.github/workflows/build-with-nix-on-self-hosted.yml

@@ -0,0 +1,33 @@
+name: build-with-nix
+
+# Trigger the workflow on push or pull request, but only for the master branch
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+jobs:
+  build:
+    name: build with haskell.nix
+    runs-on: self-hosted
+
+    steps:
+    - uses: actions/checkout@v2
+      if: github.event.action == 'opened' || github.event.action == 'synchronize' || github.event.ref == 'refs/heads/master'
+
+    - name: Prepare Nix
+      run: |
+        ./ci/prepare-env/do.sh
+
+    - name: Build
+      run: |
+        [[ -f ~/.nix-profile/etc/profile.d/nix.sh ]] && . ~/.nix-profile/etc/profile.d/nix.sh
+        nix-build ./cross-build.nix
+
+        #- name: Test
+        #run: |
+        #nix-shell --run "cabal v2-test --enable-tests"
+
+        #- name: Build Docker Image
+        #run: |
+        #nix-build ./docker.nix

.github/workflows/ci.yml

@@ -0,0 +1,51 @@
+name: CI
+
+# Trigger the workflow on push or pull request, but only for the main branch
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+jobs:
+  cabal:
+    name:  ${{ matrix.os }} / ghc ${{ matrix.ghc }} 
+    runs-on:  ${{ matrix.os }} 
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        cabal: ["2.4"]
+        ghc:
+          - 8.10.7
+        exclude:
+          - os: macOS-latest
+            ghc: 8.8.4
+          - os: windows-latest
+            ghc: 8.8.4
+
+    steps:
+    - uses: actions/[email protected]
+      if: github.event.action == 'opened' || github.event.action == 'synchronize' || github.event.ref == 'refs/heads/master'
+
+    - uses: haskell/actions/setup@v1
+      id: setup-haskell-cabal
+      name: Setup Haskell
+      with:
+        ghc-version:  ${{ matrix.ghc }} 
+        cabal-version:  ${{ matrix.cabal }} 
+
+    - name: Freeze
+      run: |
+        cabal v2-freeze
+    - uses: actions/[email protected]
+      name: Cache ~/.cabal/store
+      with:
+        path:  ${{ steps.setup-haskell-cabal.outputs.cabal-store }} 
+        key:  ${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('cabal.project.freeze') }} 
+
+    - name: Build
+      run: |
+        cabal v2-configure --enable-tests --enable-benchmarks --test-show-details=direct
+        cabal v2-build all
+    - name: Test
+      run: |
+        cabal v2-test all

.gitignore

@@ -1,3 +1,4 @@
+### Haskell
 dist
 dist-*
 cabal-dev
@@ -7,17 +8,50 @@ cabal-dev
 *.chs.h
 *.dyn_o
 *.dyn_hi
-.hpc
-.hsenv
-.cabal-sandbox/
-cabal.sandbox.config
 *.prof
 *.aux
 *.hp
 *.eventlog
-.stack-work/
-cabal.project.local
+.virtualenv
+.hsenv
+.hpc
+.cabal-sandbox/
+cabal.sandbox.config
+cabal.config
+.ghc.environment.*
 .HTF/
+# Stack
+.stack-work/
 stack.yaml.lock
 
+### IDE/support
+# Vim
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+*~
+tags
+
+# IntellijIDEA
+.idea/
+.ideaHaskellLib/
+*.iml
+
+# Atom
+.haskell-ghc-mod.json
+
+# VS
+.vscode/
+
+# Emacs
+*#
+TAGS
+
+# other
 .DS_Store
+
+# nix
+result
+result-*
+